I am sure that many of you will recall that for awhile - years - i have been be moaning the problems of my kitchen, condensation and mould (1950's bungalow). I have it all year round but in winter it is at its worst.

Having tried everything I eventually got my OH to put in a PIV ( nuaire eco with heat but we do not have the heat unit on as it happens). Well, after a month, I think I can say it is working. The walls are drying. The mould has not returned since I cleaned it off just after Christmas and all the rooms have lost the must smell ( although the kitchen is still musty smelling).

I also use a dehumidifier still when cooking ( maybe I need a vent for the cooker in the kitchen?). But the walls are now drying off and the windows are free from running water and everything seems to have imporved significantly.

Now maybe I will be able to re paint, clean and have a mould free and cough free life.

Thought I would share that.

wrote:

I am sure that many of you will recall that for awhile - years - i have
been be moaning the problems of my kitchen, condensation and mould (1950's
bungalow). I have it all year round but in winter it is at its worst.

Having tried everything I eventually got my OH to put in a PIV ( nuaire
eco with heat but we do not have the heat unit on as it happens). Well,
after a month, I think I can say it is working. The walls are drying. The
mould has not returned since I cleaned it off just after Christmas and all
the rooms have lost the must smell ( although the kitchen is still musty
smelling).

I also use a dehumidifier still when cooking ( maybe I need a vent for the
cooker in the kitchen?). But the walls are now drying off and the windows
are free from running water and everything seems to have imporved
significantly.

Now maybe I will be able to re paint, clean and have a mould free and
cough free life.

Thought I would share that.

That's interesting. Is the air intake in the loft and, if so, is the
incoming air dusty at all? How often do filters need changing?

--

Roger Hayter

On Sunday, February 16, 2020 at 9:26:54 AM UTC, Roger Hayter wrote:
wrote:

are free from running water and everything seems to have imporved
significantly.

Now maybe I will be able to re paint, clean and have a mould free and
cough free life.

Thought I would share that.

That's interesting. Is the air intake in the loft and, if so, is the
incoming air dusty at all? How often do filters need changing?

--

Roger Hayter

Is the air intake in the loft

Yes, the air intake is in the loft.

and, if so, is the
incoming air dusty at all?

No, because it has filters on the PIV.


How often do filters need changing?

According to the manufacturer, every five to seven years.
I cannot confirm that because we have not had it that long.

O

Now maybe I will be able to re paint, clean and have a mould free and
cough free life.

Thought I would share that.

That's interesting. Is the air intake in the loft and, if so, is the
incoming air dusty at all? How often do filters need changing?

--

Roger Hayter

I should also add, you cant hear it either. Its whisper quiet.

On Sat, 15 Feb 2020 22:44:11 -0800 (PST),
wrote:

( maybe I need a vent for the cooker in the kitchen?).

Yes, no doubt about it.

Old kitchen here had a cooker hood but it recycled the air. There was
an extractor fan but it was broken. Didn't have a problem with mould
but when cooking the windows (6mm double glazed units) would stream
with condensation.

I removed the broken extrator fan and installed a length of vent hose
from the hood to the hole in the wall, draught proofed of course. Use
the hood when cooking, no more condenstaion on the windows.

--
Cheers
Dave.

wrote:

On Sunday, February 16, 2020 at 9:26:54 AM UTC, Roger Hayter wrote:
wrote:

are free from running water and everything seems to have imporved
significantly.

Now maybe I will be able to re paint, clean and have a mould free and
cough free life.

Thought I would share that.

That's interesting. Is the air intake in the loft and, if so, is the
incoming air dusty at all? How often do filters need changing?

--

Roger Hayter

Is the air intake in the loft

Yes, the air intake is in the loft.

and, if so, is the
incoming air dusty at all?

No, because it has filters on the PIV.


How often do filters need changing?

According to the manufacturer, every five to seven years.
I cannot confirm that because we have not had it that long.

Sounds like a good idea, especially if I ever have a house less draughty
than the current one.

--

Roger Hayter

On Sun, 16 Feb 2020 12:46:06 +0000, (Roger Hayter)
wrote:

snip

How often do filters need changing?

According to the manufacturer, every five to seven years.
I cannot confirm that because we have not had it that long.

Sounds like a good idea, especially if I ever have a house less draughty
than the current one.

Those Victorians had it all worked out eh. ;-)

Seriously though, we now often live in near hermetically sealed homes
and you see people drying clothes indoors and on radiators complaining
about the (subsequent) condensation and mould.

I thought we were supposed to 'change' the air in our homes several
times a day?

We replace a draughty sash window with a modern sealed DG one and are
then forced to have a permanently open 'trickle vent' to replace the
draught the old windows provided in the first place! ;-)

We live in an EOT Victorian cottage with solid brick walls and don't
have central heating as there seems little point heating up large
flank walls that are exposed to the outside world.

Our TD is a vented one and oil filled rads keep the rooms we are using
at a comfortable temperature (some of it on E7).

Plus the Mrs goes up and down in temperature all the time so a
'warmish' room and her having the option of putting a cardi on works
for us. ;-)

And given the global warming I can't see the point of fitting CH now
but might extend the Aircon for the summer. ;-)

Cheers, T i m

On 16 Feb 2020 at 12:46:06 GMT, "Roger Hayter" Roger Hayter wrote:

wrote:

On Sunday, February 16, 2020 at 9:26:54 AM UTC, Roger Hayter wrote:
wrote:

are free from running water and everything seems to have imporved
significantly.

Now maybe I will be able to re paint, clean and have a mould free and
cough free life.

Thought I would share that.

That's interesting. Is the air intake in the loft and, if so, is the
incoming air dusty at all? How often do filters need changing?

--

Roger Hayter

Is the air intake in the loft

Yes, the air intake is in the loft.

and, if so, is the
incoming air dusty at all?

No, because it has filters on the PIV.


How often do filters need changing?

According to the manufacturer, every five to seven years.
I cannot confirm that because we have not had it that long.

Sounds like a good idea, especially if I ever have a house less draughty
than the current one.

Strikes me that that's the rub - how does the fresh air circulate/exhaust. If
it's not actually pushing out the damp air the problem remains?


--
Cheers, Rob

On 16/02/2020 06:44, wrote:
I am sure that many of you will recall that for awhile - years - i have been be moaning


Yes.

--
Adam

On 16/02/2020 13:42, Chris Hogg wrote:
On Sun, 16 Feb 2020 13:35:41 +0000 (UTC), RJH
wrote:

On 16 Feb 2020 at 12:46:06 GMT, "Roger Hayter" Roger Hayter wrote:

wrote:

On Sunday, February 16, 2020 at 9:26:54 AM UTC, Roger Hayter wrote:
wrote:

are free from running water and everything seems to have imporved
significantly.

Now maybe I will be able to re paint, clean and have a mould free and
cough free life.

Thought I would share that.

That's interesting. Is the air intake in the loft and, if so, is the
incoming air dusty at all? How often do filters need changing?

--

Roger Hayter

Is the air intake in the loft

Yes, the air intake is in the loft.

and, if so, is the
incoming air dusty at all?

No, because it has filters on the PIV.


How often do filters need changing?

According to the manufacturer, every five to seven years.
I cannot confirm that because we have not had it that long.

Sounds like a good idea, especially if I ever have a house less draughty
than the current one.

Strikes me that that's the rub - how does the fresh air circulate/exhaust. If
it's not actually pushing out the damp air the problem remains?

This tells you all (or nothing?) about it
https://www.nuaire.co.uk/residential...ut-ventilation


Works well with cauldrons.

--
Adam

On Sunday, February 16, 2020 at 1:32:15 PM UTC, T i m wrote:
On Sun, 16 Feb 2020 12:46:06 +0000, (Roger Hayter)
wrote:

We replace a draughty sash window with a modern sealed DG one and are
then forced to have a permanently open 'trickle vent' to replace the
draught the old windows provided in the first place! ;-)

We live in an EOT Victorian cottage with solid brick walls and don't
have central heating as there seems little point heating up large
flank walls that are exposed to the outside world.

Our TD is a vented one and oil filled rads keep the rooms we are using
at a comfortable temperature (some of it on E7).

Plus the Mrs goes up and down in temperature all the time so a
'warmish' room and her having the option of putting a cardi on works
for us. ;-)

And given the global warming I can't see the point of fitting CH now
but might extend the Aircon for the summer. ;-)

Cheers, T i m

Seriously though, we now often live in near hermetically sealed homes
and you see people drying clothes indoors and on radiators complaining
about the (subsequent) condensation and mould

In my own defence if I may, I do not dry washing indoors. I have a condensing dryer but I even had that moved out of the kitchen ( together with the freezer ) to an outhouse at much inconvenience but it did not good.

I moved them back when I realised it was not the machinery but just that the house had become so bubble wrapped it was not moving any air. I cut my washing down to once a week and use of the cooker to twice a week before getting a dehumidifier for the times I had the cooker or washer running.

But still we had a problem. Short of not breathing nothing was stoppin g the condensation and mould until we got the PIV.

You are correct though, modern living with its over insulated houses is to blame. If I had my time over I would have left the old wooden single glazed windows in place and not had the roof insulation. I called a halt at cavity wall insulation because we were already in black mould country before then.

ARW Wrote in message:
On 16/02/2020 13:42, Chris Hogg wrote:
On Sun, 16 Feb 2020 13:35:41 +0000 (UTC), RJH
wrote:

On 16 Feb 2020 at 12:46:06 GMT, "Roger Hayter" Roger Hayter wrote:

wrote:

On Sunday, February 16, 2020 at 9:26:54 AM UTC, Roger Hayter wrote:
wrote:

are free from running water and everything seems to have imporved
significantly.

Now maybe I will be able to re paint, clean and have a mould free and
cough free life.

Thought I would share that.

That's interesting. Is the air intake in the loft and, if so, is the
incoming air dusty at all? How often do filters need changing?

--

Roger Hayter

Is the air intake in the loft

Yes, the air intake is in the loft.

and, if so, is the
incoming air dusty at all?

No, because it has filters on the PIV.


How often do filters need changing?

According to the manufacturer, every five to seven years.
I cannot confirm that because we have not had it that long.

Sounds like a good idea, especially if I ever have a house less draughty
than the current one.

Strikes me that that's the rub - how does the fresh air circulate/exhaust. If
it's not actually pushing out the damp air the problem remains?

This tells you all (or nothing?) about it
https://www.nuaire.co.uk/residential...ut-ventilation


Works well with cauldrons.

--
Adam


Don't knock it, it's got a low energy 400W heater.
--

%Profound_observation%


----Android NewsGroup Reader----
http://usenet.sinaapp.com/

Chris Hogg wrote on 16/02/2020 :
This tells you all (or nothing?) about it
https://www.nuaire.co.uk/residential...ut-ventilation


Read like techno waffle to me. The only way to ensure a satisfactorily
low humidity, is to either have lots of drafty through ventilation, or
extract moist air at source. That last means extracting air at the
cooker, in bathrooms and not drying clothes in the house. All blowing
air into a house does, is cause it to leak out through completely
random, uncontrolled exits.

"Harry Bloomfield"; "Esq." wrote in
message ...
Chris Hogg wrote on 16/02/2020 :
This tells you all (or nothing?) about it
https://www.nuaire.co.uk/residential...ut-ventilation


Read like techno waffle to me. The only way to ensure a satisfactorily low
humidity, is to either have lots of drafty through ventilation, or extract
moist air at source. That last means extracting air at the cooker, in
bathrooms and not drying clothes in the house. All blowing air into a
house does, is cause it to leak out through completely random,
uncontrolled exits.

But it still better than leaving it inside the house.

On 16/02/2020 21:32, Harry Bloomfield wrote:
Chris Hogg wrote on 16/02/2020 :
This tells you all (or nothing?) about it
https://www.nuaire.co.uk/residential...ut-ventilation


Read like techno waffle to me. The only way to ensure a satisfactorily
low humidity, is to either have lots of drafty through ventilation, or
extract moist air at source. That last means extracting air at the
cooker, in bathrooms and not drying clothes in the house. All blowing
air into a house does, is cause it to leak out through completely
random, uncontrolled exits.

As long as its wet air out and dry air in, the job is done


--
Any fool can believe in principles - and most of them do!

On Sunday, 16 February 2020 06:44:14 UTC, wrote:
I am sure that many of you will recall that for awhile - years - i have been be moaning the problems of my kitchen, condensation and mould (1950's bungalow). I have it all year round but in winter it is at its worst.

Having tried everything I eventually got my OH to put in a PIV ( nuaire eco with heat but we do not have the heat unit on as it happens). Well, after a month, I think I can say it is working. The walls are drying. The mould has not returned since I cleaned it off just after Christmas and all the rooms have lost the must smell ( although the kitchen is still musty smelling).

I also use a dehumidifier still when cooking ( maybe I need a vent for the cooker in the kitchen?). But the walls are now drying off and the windows are free from running water and everything seems to have imporved significantly.

Now maybe I will be able to re paint, clean and have a mould free and cough free life.

Thought I would share that.

You need extractors at both kitchen and showers if you have one.
There also needs to be means to let the air you extract be replaced (ie an air "intake")

Be aware of any chimneys. Extractor fans can suck air down the chimneys and hence combustion fumes into the house.

ARW Wrote in message:
On 16/02/2020 13:42, Chris Hogg wrote:
On Sun, 16 Feb 2020 13:35:41 +0000 (UTC), RJH
wrote:

On 16 Feb 2020 at 12:46:06 GMT, "Roger Hayter" Roger Hayter wrote:

wrote:

On Sunday, February 16, 2020 at 9:26:54 AM UTC, Roger Hayter wrote:
wrote:

are free from running water and everything seems to have imporved
significantly.

Now maybe I will be able to re paint, clean and have a mould free and
cough free life.

Thought I would share that.

That's interesting. Is the air intake in the loft and, if so, is the
incoming air dusty at all? How often do filters need changing?

--

Roger Hayter

Is the air intake in the loft

Yes, the air intake is in the loft.

and, if so, is the
incoming air dusty at all?

No, because it has filters on the PIV.


How often do filters need changing?

According to the manufacturer, every five to seven years.
I cannot confirm that because we have not had it that long.

Sounds like a good idea, especially if I ever have a house less draughty
than the current one.

Strikes me that that's the rub - how does the fresh air circulate/exhaust. If
it's not actually pushing out the damp air the problem remains?

This tells you all (or nothing?) about it
https://www.nuaire.co.uk/residential...ut-ventilation


Works well with cauldrons.


....surprised it works under bridges tho...
--
Jimk


----Android NewsGroup Reader----
http://usenet.sinaapp.com/

On Mon, 17 Feb 2020 10:53:38 +1100, jon lopgel, better known as cantankerous
trolling senile geezer Rodent Speed, wrote:


But it still better than leaving it inside the house.

What could be worse than trolling on Usenet ALL NIGHT LONG, EVERY NIGHT, you
clinically insane senile asshole!

--
Sqwertz to Rot Speed:
"This is just a hunch, but I'm betting you're kinda an argumentative
asshole.
MID:

On Monday, 17 February 2020 01:01:54 UTC, The Natural Philosopher wrote:
On 16/02/2020 21:32, Harry Bloomfield wrote:
Chris Hogg wrote on 16/02/2020 :

This tells you all (or nothing?) about it
https://www.nuaire.co.uk/residential...ut-ventilation


Read like techno waffle to me. The only way to ensure a satisfactorily
low humidity, is to either have lots of drafty through ventilation, or
extract moist air at source. That last means extracting air at the
cooker, in bathrooms and not drying clothes in the house. All blowing
air into a house does, is cause it to leak out through completely
random, uncontrolled exits.

As long as its wet air out and dry air in, the job is done

It is, but it's an approach that's very wasteful of energy ie run cost. And the op unsurprisingly reports slow results compared to a dehumidifier.


NT

On Sunday, February 16, 2020 at 9:32:43 PM UTC, wrote:
Chris Hogg wrote on 16/02/2020 :
This tells you all (or nothing?) about it
https://www.nuaire.co.uk/residential...ut-ventilation


Read like techno waffle to me. The only way to ensure a satisfactorily
low humidity, is to either have lots of drafty through ventilation, or
extract moist air at source. That last means extracting air at the
cooker, in bathrooms and not drying clothes in the house. All blowing
air into a house does, is cause it to leak out through completely
random, uncontrolled exits.

But it works. I dont care how. I eventually decided on it after hearing the local council /housing associations are using a similar solution to their own over insulated housing stock.

On Sun, 16 Feb 2020 07:22:29 -0800 (PST),
wrote:

On Sunday, February 16, 2020 at 1:32:15 PM UTC, T i m wrote:
On Sun, 16 Feb 2020 12:46:06 +0000, (Roger Hayter)
wrote:

We replace a draughty sash window with a modern sealed DG one and are
then forced to have a permanently open 'trickle vent' to replace the
draught the old windows provided in the first place! ;-)

We live in an EOT Victorian cottage with solid brick walls and don't
have central heating as there seems little point heating up large
flank walls that are exposed to the outside world.

Our TD is a vented one and oil filled rads keep the rooms we are using
at a comfortable temperature (some of it on E7).

Plus the Mrs goes up and down in temperature all the time so a
'warmish' room and her having the option of putting a cardi on works
for us. ;-)

And given the global warming I can't see the point of fitting CH now
but might extend the Aircon for the summer. ;-)

Cheers, T i m

Seriously though, we now often live in near hermetically sealed homes
and you see people drying clothes indoors and on radiators complaining
about the (subsequent) condensation and mould

In my own defence if I may, I do not dry washing indoors.

I never suggested you did. ;-)

I have a condensing dryer

Do they 'leak' condensation? I think I've been round friends that have
them and they seem to?

but I even had that moved out of the kitchen ( together with the freezer ) to an outhouse at much inconvenience but it did not good.

It may have helped but not been a big enough contributor?

I moved them back when I realised it was not the machinery but just that the house had become so bubble wrapped it was not moving any air.

Quite common situation these days. Often people can't afford to
'waste' the heating though vents, airbricks and extractors ... nor run
a tumble dryer and so all the cooking (and breathing) and clothes
drying moisture has nowhere to go.

I cut my washing down to once a week and use of the cooker to twice a week before getting a dehumidifier for the times I had the cooker or washer running.

Our daughter lives in a rented flat and has no (secure) outdoor
clothes drying space. So I leant her our middle sized dehumidifier and
she leaves that and two clothes drying racks in her bedroom and shuts
the door (when going out). She says it works a treat. ;-)

But still we had a problem. Short of not breathing nothing was stoppin g the condensation and mould until we got the PIV.

Our house has no central heating but does have solid 9" brick walls. I
believe the walls 'breathe' and so some of the moisture in here goes
out that way. We have a smaller dehumidifier in our bedroom and will
put that on now and again if we start to see any condensation on the
windows.

You are correct though, modern living with its over insulated houses is to blame.

Modern well insulated is good, but only if the ventilation is to spec.

If I had my time over I would have left the old wooden single glazed windows in place and not had the roof insulation.

;-)

I called a halt at cavity wall insulation because we were already in black mould country before then.

The shame is that there is no reason you wouldn't actually benefit
from cavity wall insulation as if the internal walls stay warmer, they
won't gather so much condensation.

No, the key here is to do what you have done now and ensure there is
adequate moisture extraction.

It's no different to having a waterproof coat. There is little more
waterproof than the old Pakamac, as long as you aren't exerting
yourself in it. That's why all good waterproof clothing is
'breathable' or has vents to keep the rain out but let the moist air
out.

Something I've mentioned before is that I'm surprised more new builds
don't have heat exchangers (HRV or MVHR) fitted as std?

Cheers, T i m

On Monday, February 17, 2020 at 12:14:05 PM UTC, wrote:
On Monday, 17 February 2020 01:01:54 UTC, The Natural Philosopher wrote:
On 16/02/2020 21:32, Harry Bloomfield wrote:
Chris Hogg wrote on 16/02/2020 :

This tells you all (or nothing?) about it
https://www.nuaire.co.uk/residential...ut-ventilation


Read like techno waffle to me. The only way to ensure a satisfactorily
low humidity, is to either have lots of drafty through ventilation, or
extract moist air at source. That last means extracting air at the
cooker, in bathrooms and not drying clothes in the house. All blowing
air into a house does, is cause it to leak out through completely
random, uncontrolled exits.

As long as its wet air out and dry air in, the job is done

It is, but it's an approach that's very wasteful of energy ie run cost. And the op unsurprisingly reports slow results compared to a dehumidifier.


NT

But a dehumidifier is always temporary. It works only when on and only in one room . Since condensation and mould tend to move through the house in time ( at least thats my experience) its better to find a permanent solution.

This one works. It doesnt cost much ( especially so compared to the cost of running a dehumidifier all the time) and its a lot less noisey than a dehumidifier.

I do not have the heating unit ( which is attached to the model I got) on and it works without. You could save £200 if you got an unheated one.

wrote:
On Monday, 17 February 2020 01:01:54 UTC, The Natural Philosopher wrote:
On 16/02/2020 21:32, Harry Bloomfield wrote:
Chris Hogg wrote on 16/02/2020 :

This tells you all (or nothing?) about it
https://www.nuaire.co.uk/residential...ut-ventilation


Read like techno waffle to me. The only way to ensure a satisfactorily
low humidity, is to either have lots of drafty through ventilation, or
extract moist air at source. That last means extracting air at the
cooker, in bathrooms and not drying clothes in the house. All blowing
air into a house does, is cause it to leak out through completely
random, uncontrolled exits.

As long as its wet air out and dry air in, the job is done

It is, but it's an approach that's very wasteful of energy ie run cost.
And the op unsurprisingly reports slow results compared to a dehumidifier.


But its working for her. Its a pragmatic solution to a long standing
problem. Be happier for her.

Tim

--
Please don't feed the trolls

On Mon, 17 Feb 2020 04:42:24 -0800 (PST),
wrote:

snip

But a dehumidifier is always temporary.

Why is it?

I appreciate why some might see them as that as they are often brought
in to speed up the drying process after floods and the like. Ours are
'permanent in their location and usage, even if they are 'portable' as
such. Our aircon unit is also described as 'portable' and it can be
moved on it's wheels in use, it's just the hole in the wall and the
unit outside means it's not *that* portable. ;-)

It works only when on

True ... but most have humidistat and so are only on when required.

and only in one room .

True. However, if you deal with the worst at source, it shouldn't
migrate so much (assisted by warmer walls with cavity insulation).

Since condensation and mould tend to move through the house in time (at least thats my experience) its better to find a permanent solution.

Circumstances permitting.


This one works. It doesnt cost much ( especially so compared to the cost of running a dehumidifier all the time) and its a lot less noisey than a dehumidifier.

Understood.

I do not have the heating unit ( which is attached to the model I got) on and it works without. You could save £200 if you got an unheated one.

What does the 'heating' do? Heat the air (to compensate for any heat
lost) or stop water condensing in the unit?

Cheers, T i m

On Monday, 17 February 2020 12:42:28 UTC, aprils wee wrote:
On Monday, February 17, 2020 at 12:14:05 PM UTC, tabby wrote:
On Monday, 17 February 2020 01:01:54 UTC, The Natural Philosopher wrote:
On 16/02/2020 21:32, Harry Bloomfield wrote:
Chris Hogg wrote on 16/02/2020 :

This tells you all (or nothing?) about it
https://www.nuaire.co.uk/residential...ut-ventilation


Read like techno waffle to me. The only way to ensure a satisfactorily
low humidity, is to either have lots of drafty through ventilation, or
extract moist air at source. That last means extracting air at the
cooker, in bathrooms and not drying clothes in the house. All blowing
air into a house does, is cause it to leak out through completely
random, uncontrolled exits.

As long as its wet air out and dry air in, the job is done

It is, but it's an approach that's very wasteful of energy ie run cost. And the op unsurprisingly reports slow results compared to a dehumidifier.


NT

But a dehumidifier is always temporary.

no more or less than PIV

It works only when on

heh

and only in one room .

not so

Since condensation and mould tend to move through the house in time ( at least thats my experience) its better to find a permanent solution.

nonsequitur, and neither PIV nor dehumidifier lasts forever.

This one works. It doesnt cost much ( especially so compared to the cost of running a dehumidifier all the time)

what was the calculated cost of you throwing out all that heated air all winter?

and its a lot less noisey than a dehumidifier.

some of which are silent

I do not have the heating unit ( which is attached to the model I got) on and it works without. You could save £200 if you got an unheated one..

how is it possible to save £200 on a small fan? They don't cost that much.


NT

The Natural Philosopher pretended :
As long as its wet air out and dry air in, the job is done

The air outdoors often reaches 100% humidity, so indiscriminate sucking
of that into a home might not help. It is always best to extract the
moist air at source to the outdoors.

On 18/02/2020 16:27, Harry Bloomfield wrote:
The Natural Philosopher pretended :
As long as its wet air out and dry air in, the job is done

The air outdoors often reaches 100% humidity, so indiscriminate sucking
of that into a home might not help. It is always best to extract the
moist air at source to the outdoors.

You forget that outside air is almost never 100% humidity AND warm.

So once in the house its a lot less humid as it warms up.
Only in a sultry summer will air from outside be 100% humid inside as well.

Summer in Durban requires aircon to dehumidify. But seldom in the UK :-)



--
"The great thing about Glasgow is that if there's a nuclear attack it'll
look exactly the same afterwards."

Billy Connolly

The Natural Philosopher formulated the question :
You forget that outside air is almost never 100% humidity AND warm.

So once in the house its a lot less humid as it warms up.
Only in a sultry summer will air from outside be 100% humid inside as well.

You still cannot beat removing moist air in a home, at the sources of
moisture.

"Harry Bloomfield"; "Esq." wrote in
message ...
The Natural Philosopher pretended :
As long as its wet air out and dry air in, the job is done

The air outdoors often reaches 100% humidity, so indiscriminate sucking of
that into a home might not help.

Yes, but its so easy to discriminate.

It is always best to extract the moist air at source to the outdoors.

But that has to be replaced with air from somewhere
so its not necessarily better in that regard.

The main advantage is that the moist air
doesn't get around the rest of the house first.

On Wed, 19 Feb 2020 07:54:50 +1100, jon lopgel, better known as cantankerous
trolling senile geezer Rodent Speed, wrote:


But that has to be replaced with air from somewhere
so its not necessarily better in that regard.

The main advantage is that the moist air
doesn't get around the rest of the house first.

I have the impression that NO ONE talked to you, or ASKED you anything,
senile Rodent! It's just as in your real life, eh? LMAO

--
Website (from 2007) dedicated to the 85-year-old trolling senile
cretin from Oz:
https://www.pcreview.co.uk/threads/r...d-faq.2973853/

jon lopgel used his keyboard to write :
But that has to be replaced with air from somewhere
so its not necessarily better in that regard.

Agreed, but most homes are generally leaky.

The main advantage is that the moist air
doesn't get around the rest of the house first.

That is a really massive advantage. I have absolutely no damp in my
home at all, because I have redesigned in, proper extraction at all
points where moisture is generated and banned the drying of clothes
anywhere in the main house.

"Harry Bloomfield"; "Esq." wrote in
message ...
jon lopgel used his keyboard to write :
But that has to be replaced with air from somewhere
so its not necessarily better in that regard.

Agreed, but most homes are generally leaky.

But you are stuck with whatever the outside
air humidity is. With that other system, it can
be selective and only move the moist air out
of the house when the outside air is less moist.

The main advantage is that the moist air
doesn't get around the rest of the house first.

That is a really massive advantage. I have absolutely no damp in my home
at all, because I have redesigned in, proper extraction at all points
where moisture is generated and banned the drying of clothes anywhere in
the main house.

I have no damp in mine either and never get
any condensation on the single glazed windows
when cooking and don't use the exhaust fan when
cooking. I only use it when grilling steaks because
I do those stinking hot on one of those cast iron
grill plates and get a lot of smoke when doing that
when the fat catches fire.

I don't have an exhaust fan in the shower room and
only get a bit of condensation on the big mirror from
the steam from the shower which doesn't last long.

On Wed, 19 Feb 2020 09:25:05 +1100, jon lopgel, better known as cantankerous
trolling senile geezer Rodent Speed, wrote:

FLUSH the clinically insane asshole's latest troll****

09:25??? LOL

--
Marland answering senile Rodent's statement, "I don't leak":
"That¢s because so much **** and ****e emanates from your gob that there is
nothing left to exit normally, your arsehole has clammed shut through disuse
and the end of prick is only clear because you are such a ******."
Message-ID:

On 16/02/20 06:44, wrote:
I am sure that many of you will recall that for awhile - years - i have been be moaning the problems of my kitchen, condensation and mould (1950's bungalow). I have it all year round but in winter it is at its worst.

Having tried everything I eventually got my OH to put in a PIV ( nuaire eco with heat but we do not have the heat unit on as it happens). Well, after a month, I think I can say it is working. The walls are drying. The mould has not returned since I cleaned it off just after Christmas and all the rooms have lost the must smell ( although the kitchen is still musty smelling).

I also use a dehumidifier still when cooking ( maybe I need a vent for the cooker in the kitchen?). But the walls are now drying off and the windows are free from running water and everything seems to have imporved significantly.

Now maybe I will be able to re paint, clean and have a mould free and cough free life.

Thought I would share that.

Could you tell me how well it works with "hidden" mould growth? By that
I mean the mould that grows on walls behind cupboards, wardrobes, etc,
on the backs of those wardrobes, and even inside the wardrobes, drawers,
and anything enclosed.

We have used a dehumidifier, and that helps, but (as has been pointed
out in this thread), only as long as it is on and used regularly. The
hidden mould we have found is not black, but blue (maybe a
penicillium?), and will appear on the strangest surfaces, even some
plastic ones, but it most certainly has a predilection for leather -
belts, handbags, shoes, etc.

--

Jeff

jon lopgel wrote :
I have no damp in mine either and never get
any condensation on the single glazed windows
when cooking and don't use the exhaust fan when
cooking.

I find that difficult to believe, because I have double have good DG
and even so I can get a tiny amount at the lower edge of the panes if I
forget to turn the hob extract on, when doing serious cooking.

Before I sorted this place out with insulation and DG, it was single
glazed, very leaky, fixed vents and suffered lots of condensation. In
winter ice would sometimes appear on the inside of the glass when it
was really cold. Internal RH is always between 40 and 50%.

Jeff Layman submitted this idea :
Could you tell me how well it works with "hidden" mould growth? By that I
mean the mould that grows on walls behind cupboards, wardrobes, etc, on the
backs of those wardrobes, and even inside the wardrobes, drawers, and
anything enclosed.

Your moisture must be from somewhere and its source/cause needs to be
found. I have lots of cupboards, drawers and wardrobe space - none of
which suffer such problems. I have an especially large built in
wardrobe, occupying a full wall (maybe 16' wide) which I built 30 years
ago and is packed with clothes, never any problems there. It is
back-less, just a papered, plastered, cavity party wall behind it and
all 6x doors are usually kept closed.

On 17/02/2020 12:42, wrote:

But a dehumidifier is always temporary.

No it's not. Our bedrooms are downstairs and on the side of a hill so
there's no way of getting effective "through" ventilation so I have a
dehumidifier set to easy/auto which takes ambient temperature and
maintains a corresponding humidity level.

It works only when on and only in one room .

Also not true, humidity will "balance" to all connected areas, rooms so
leaving doors open or a-jar allows dehumidifier to extract moisture
from everywhere.

Since condensation and mould tend to move through the house in time ( at least thats my experience) its better to find a permanent solution.

I can't believe that after all these years you still haven't realised
the moisture from your cooking needs extracting at source, same with
bathroom. A dehumidifier will remove basic ambient moisture but if
you're steaming litres of water into the house on a daily basis it's
absolutely going to condense on the cold walls and mould will inevitably
appear.

This one works. It doesnt cost much ( especially so compared to the cost of running a dehumidifier all the time) and its a lot less noisey than a dehumidifier.

A dehumidifier with an operational humidistat doesn't run all the time,
only when required, when humidity reaches a state that provides
conditions for mould to grow, if you're removing moisture at source it
should rarely come on.

I do not have the heating unit ( which is attached to the model I got) on and it works without.

And when the external humidity rises in spring and autumn you're simply
pumping a HIGHER moisture content into your house amplifying the problem.

Hey-ho...
Nothing ever changes if nothing changes.

"Harry Bloomfield"; "Esq." wrote in
message ...
jon lopgel wrote :
I have no damp in mine either and never get
any condensation on the single glazed windows
when cooking and don't use the exhaust fan when
cooking.

I find that difficult to believe, because I have double have good DG and
even so I can get a tiny amount at the lower edge of the panes if I forget
to turn the hob extract on, when doing serious cooking.

Most likely the difference is with how I cook. I never
boil anything anymore except when making marmalade
and relish and those arent done in winter because the
limes I use for the marmalade arent available in winter
because I use the locally grown limes.

The frozen peas and corn and capsicum that is my normal
veg with the main meal is done in the microwave in a glass
cup and you don't even get any steam from the microwave.

The potato is mostly roasted in the digital air fryer after being
dipped in olive oil after being peeled. With steak and chops
and stuff like that the potato is done in the microwave with no
water at all, microwaved in its jacket. No steam with that either.
Rice too, that's done in the microwave and while there is some
water added to the uncooked rice in the hard plastic thing with
a lid, that's absorbed by the rice, there is no water left when the
rice is ready to plate. But I normally put the curry in that hard plastic
thing and eat it from there with a splayd instead of on a plate.

Before I sorted this place out with insulation and DG, it was single
glazed, very leaky, fixed vents and suffered lots of condensation. In
winter ice would sometimes appear on the inside of the glass when it was
really cold. Internal RH is always between 40 and 50%.

I don't measure mine but that's pretty typical outside in winter here,

On Sat, 22 Feb 2020 06:04:28 +1100, jon lopgel, better known as cantankerous
trolling senile geezer Rodent Speed, wrote:


Most likely the difference is with how I cook. I never
boil anything anymore except when making marmalade
and relish and those arent done in winter because the
limes I use for the marmalade arent available in winter
because I use the locally grown limes.

LOL Ridiculous senile idiot! Tell him also about the bread you bake and the
beer you brew, psychopath!

--
The Natural Philosopher about senile Rot:
"Rod speed is not a Brexiteer. He is an Australian troll and arsehole."
Message-ID:

On Friday, 21 February 2020 11:41:13 UTC, wrote:
jon lopgel wrote :
I have no damp in mine either and never get
any condensation on the single glazed windows
when cooking and don't use the exhaust fan when
cooking.

I find that difficult to believe, because I have double have good DG
and even so I can get a tiny amount at the lower edge of the panes if I
forget to turn the hob extract on, when doing serious cooking.

The prat is in australia, hot & dry. He uses pseudonyms prolifically to try to get past the filters almost everyone sets for his junk.