Hi I have been looking at different air conditioning for my home lounge. I have looked at the B & Q options and also at www.global-cooling.co.uk air conditioning DIY systems. I have looked at the easy fit Air Force and Millenniumair models, has any one had any experience with either? I have heard that I should go for an inverter system if possible?

Advice for a newby appreciated!

A/c? Why? It doesn't get that hot in the UK. Extra insulation and shading is all you need.

In message , Hugh
writes

Hi I have been looking at different air conditioning for my home
lounge.
I have looked at the B & Q options and also at www.global-cooling.co.uk
air conditioning DIY systems. I have looked at the easy fit Air Force
and Millenniumair models, has any one had any experience with either? I
have heard that I should go for an inverter system if possible?

Advice for a newby appreciated!


In the UK ?


--
geoff

"raden" wrote in message
...
In message , Hugh
writes

Hi I have been looking at different air conditioning for my home lounge.
I have looked at the B & Q options and also at www.global-cooling.co.uk
air conditioning DIY systems. I have looked at the easy fit Air Force
and Millenniumair models, has any one had any experience with either? I
have heard that I should go for an inverter system if possible?

Advice for a newby appreciated!


In the UK ?

Why not? If I could find a quiet one, I would have it in the bedroom to help
me sleep on hot summer nights.

Colin Bignell

In message , nightjar
writes

"raden" wrote in message
...
In message , Hugh
writes

Hi I have been looking at different air conditioning for my home lounge.
I have looked at the B & Q options and also at www.global-cooling.co.uk
air conditioning DIY systems. I have looked at the easy fit Air Force
and Millenniumair models, has any one had any experience with either? I
have heard that I should go for an inverter system if possible?

Advice for a newby appreciated!


In the UK ?

Why not? If I could find a quiet one, I would have it in the bedroom to help
me sleep on hot summer nights.

We don't have hot summer nights


--
geoff

"raden" wrote in message
...
In message , nightjar
writes

"raden" wrote in message
...
In message , Hugh
writes

Hi I have been looking at different air conditioning for my home lounge.
I have looked at the B & Q options and also at www.global-cooling.co.uk
air conditioning DIY systems. I have looked at the easy fit Air Force
and Millenniumair models, has any one had any experience with either? I
have heard that I should go for an inverter system if possible?

Advice for a newby appreciated!


In the UK ?

Why not? If I could find a quiet one, I would have it in the bedroom to
help
me sleep on hot summer nights.

We don't have hot summer nights

We do on the South Coast and even a week of disturbed sleep is too much IMO.

Colin Bignell

In message , nightjar
writes

"raden" wrote in message
...
In message , nightjar
writes

"raden" wrote in message
...
In message , Hugh
writes

Hi I have been looking at different air conditioning for my home lounge.
I have looked at the B & Q options and also at www.global-cooling.co.uk
air conditioning DIY systems. I have looked at the easy fit Air Force
and Millenniumair models, has any one had any experience with either? I
have heard that I should go for an inverter system if possible?

Advice for a newby appreciated!


In the UK ?

Why not? If I could find a quiet one, I would have it in the bedroom to
help
me sleep on hot summer nights.

We don't have hot summer nights

We do on the South Coast and even a week of disturbed sleep is too much IMO.

Steer clear of the equatorial regions then ... you'd melt

--
geoff

"nightjar" wrote in message ...
"raden" wrote in message
...
In message , nightjar
writes

"raden" wrote in message
...
In message , Hugh
writes

Hi I have been looking at different air conditioning for my home lounge.
I have looked at the B & Q options and also at www.global-cooling.co.uk
air conditioning DIY systems. I have looked at the easy fit Air Force
and Millenniumair models, has any one had any experience with either? I
have heard that I should go for an inverter system if possible?

Advice for a newby appreciated!


In the UK ?

Why not? If I could find a quiet one, I would have it in the bedroom to
help
me sleep on hot summer nights.

We don't have hot summer nights

We do on the South Coast and even a week of disturbed sleep is too much IMO.

Colin Bignell


I live on the S.coast and we don't get "hot summer nights". In fact
it's too ****ing cold to even sit outside at night in the summer.
You already have free air conditioning, it's called a "window".
Alternatively you could go have a holiday somewhere cold if a little
warmth bothers you that much....
M.K.

On Wed, 06 Apr 2005 01:09:23 GMT, raden wrote:

We don't have hot summer nights

You are kidding. There are typically a couple of nights a year when
it's scorching hot.

Andrew

Please note that the email address used for posting
usenet messages is configured such that my antispam
filter will automatically update itself so that the
senders email address is flagged as spam. If you do
need to contact me please visit my web site and
submit an enquiry - http://www.kazmax.co.uk

In message , Andrew McKay
writes
On Wed, 06 Apr 2005 01:09:23 GMT, raden wrote:

We don't have hot summer nights

You are kidding. There are typically a couple of nights a year when
it's scorching hot.

Scorching hot ?

I hate to disagree, but ...

--
geoff

Andrew McKay wrote in message . ..
On Wed, 06 Apr 2005 01:09:23 GMT, raden wrote:

We don't have hot summer nights

You are kidding. There are typically a couple of nights a year when
it's scorching hot.

It's surprising that people survive.....
M.K.



Andrew

Please note that the email address used for posting
usenet messages is configured such that my antispam
filter will automatically update itself so that the
senders email address is flagged as spam. If you do
need to contact me please visit my web site and
submit an enquiry - http://www.kazmax.co.uk

raden wrote:
In message , nightjar
writes

"raden" wrote in message
...
In message , Hugh
writes

Hi I have been looking at different air conditioning for my home
lounge.
I have looked at the B & Q options and also at
www.global-cooling.co.uk
air conditioning DIY systems. I have looked at the easy fit Air
Force
and Millenniumair models, has any one had any experience with
either? I
have heard that I should go for an inverter system if possible?

Advice for a newby appreciated!


In the UK ?

Why not? If I could find a quiet one, I would have it in the bedroom
to help
me sleep on hot summer nights.

We don't have hot summer nights


--
geoff

What?

We most certainly do. Just last year it was very hot during the night
in our bedroom, and this was after having kept the curtains closed all
day to try and shade the room.

/Heds

"Heds" wrote in message
ups.com...

raden wrote:
In message , nightjar
writes

"raden" wrote in message
...
In message , Hugh
writes

Hi I have been looking at different air conditioning for my home
lounge.
I have looked at the B & Q options and also at
www.global-cooling.co.uk
air conditioning DIY systems. I have looked at the easy fit Air
Force
and Millenniumair models, has any one had any experience with
either? I
have heard that I should go for an inverter system if possible?

Advice for a newby appreciated!


In the UK ?

Why not? If I could find a quiet one, I would have it in the bedroom
to help
me sleep on hot summer nights.

We don't have hot summer nights


--
geoff

What?

We most certainly do. Just last year it was very hot during the night
in our bedroom, and this was after having kept the curtains closed all
day to try and shade the room.

My bedroom stays cool as I have 12" of insulation in the loft. The hot loft
does not transfer heat down to the bedroom. Also have a ventilation extract
grill in the ceiling. What happens is that hot air in the bedroom rises and
heats the ceiling mass. This then radiates down at night. A simple extract
grill removes this pool of hot air keeping the ceiling cool and the room air
cool through thru-ventilation, taking in cooler air from the north of the
shaded house. Not difficult or expensive to do. But the results are clearly
felt.


_________________________________________
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"Heds" wrote in message oups.com...
raden wrote:
In message , nightjar
writes

"raden" wrote in message
...
In message , Hugh
writes

Hi I have been looking at different air conditioning for my home
lounge.
I have looked at the B & Q options and also at
www.global-cooling.co.uk
air conditioning DIY systems. I have looked at the easy fit Air
Force
and Millenniumair models, has any one had any experience with
either? I
have heard that I should go for an inverter system if possible?

Advice for a newby appreciated!


In the UK ?

Why not? If I could find a quiet one, I would have it in the bedroom
to help
me sleep on hot summer nights.

We don't have hot summer nights


--
geoff

What?

We most certainly do. Just last year it was very hot during the night
in our bedroom, and this was after having kept the curtains closed all
day to try and shade the room.

/Heds


You have no idea of what "hot" is (or how to enjoy it).
M.K.

On Wed, 06 Apr 2005 01:09:23 GMT, raden wrote:

We don't have hot summer nights

I assume you are "oop north" somewhere?

On the South Coast we get probably a month or so when the
temperature/humidity after dark is unbearable.

sponix

"s--p--o--n--i--x" wrote in message
...
On Wed, 06 Apr 2005 01:09:23 GMT, raden wrote:

We don't have hot summer nights

I assume you are "oop north" somewhere?

daughn sarf mate.

On the South Coast we get probably a month or so when the
temperature/humidity after dark is unbearable.

Nonsense. You making out the south coast is like North Africa. The average
temperature inside a house even in the hottest of spells never gets above
25C. Then if you use insulation and shading and the odd ventilation here
and there, the temperature can be quite low inside a house. Understand how
nature works and run with it not against it.




_________________________________________
Usenet Zone Free Binaries Usenet Server
More than 120,000 groups
Unlimited download
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In message , s--p--o--n--i--x
writes
On Wed, 06 Apr 2005 01:09:23 GMT, raden wrote:

We don't have hot summer nights

I assume you are "oop north" somewhere?

Err ... no


On the South Coast we get probably a month or so when the
temperature/humidity after dark is unbearable.


My heart bleeds

--
geoff

(s--p--o--n--i--x) wrote in message ...
On Wed, 06 Apr 2005 01:09:23 GMT, raden wrote:

We don't have hot summer nights

I assume you are "oop north" somewhere?

On the South Coast we get probably a month or so when the
temperature/humidity after dark is unbearable.

sponix

Ya big girl's blouse!
There is no such thing as "unbearable heat" in the UK.
You need to go out see the big wide world, where loads don't even own jumpers.
M.K.

Hugh wrote:
Hi I have been looking at different air conditioning for my home lounge.
I have looked at the B & Q options and also at www.global-cooling.co.uk
air conditioning DIY systems. I have looked at the easy fit Air Force
and Millenniumair models, has any one had any experience with either? I
have heard that I should go for an inverter system if possible?

Advice for a newby appreciated!


I installed a Millenniumair split unit just over a year ago.
Straightforward install, and works well. There was a minor fault with
the internal unit - the fan rubbed on the enclosure. I had to modify
slightly to get rid of the scraping noise.

I posted a more lengthy post about this befo
http://groups-beta.google.com/group/uk.d-i-y/msg/94ba83fa380ac7cc


--
Grunff

"Hugh" wrote in message
...

Hi I have been looking at different air conditioning for my home lounge.
I have looked at the B & Q options and also at www.global-cooling.co.uk
air conditioning DIY systems. I have looked at the easy fit Air Force
and Millenniumair models, has any one had any experience with either? I
have heard that I should go for an inverter system if possible?

Advice for a newby appreciated!


--
Hugh

I've also looked at the B&Q Air Force offering, they have a cheaper version
on their website for professional fitting only - doesn't come pre-gassed or
with the plug-'n'-socket arrangement on the coolant pipes.
The DIY version is quite attractive, but like you I'd like some feedback
before buying! Noticed they also stock wall brackets for £15 and a suitable
core drill for £15 also.

On Wed, 06 Apr 2005 09:11:58 GMT, "Alan"
wrote:

I've also looked at the B&Q Air Force offering, they have a cheaper version
on their website for professional fitting only - doesn't come pre-gassed or
with the plug-'n'-socket arrangement on the coolant pipes.
The DIY version is quite attractive, but like you I'd like some feedback
before buying! Noticed they also stock wall brackets for £15 and a suitable
core drill for £15 also.

I have a question about the systems that come with pre-gassed
pipework. What do you do if the pipes are too short? What do you do if
the tubes are too long?

s

"s--p--o--n--i--x" wrote in message
...
On Wed, 06 Apr 2005 09:11:58 GMT, "Alan"
wrote:

I've also looked at the B&Q Air Force offering, they have a cheaper
version
on their website for professional fitting only - doesn't come pre-gassed
or
with the plug-'n'-socket arrangement on the coolant pipes.
The DIY version is quite attractive, but like you I'd like some feedback
before buying! Noticed they also stock wall brackets for £15 and a
suitable
core drill for £15 also.

I have a question about the systems that come with pre-gassed
pipework. What do you do if the pipes are too short? What do you do if
the tubes are too long?

s

I guess that's a side effect of this type of system. Long pipes can be
coiled in loft space or floor void, short ones..... dunno, go for a pro
install version!
The B&Q unit comes with 4m of pipes - more than enough for my proposed
installation.

Alan.

I have heard that the Millenniumair unit allows you to shorten the pipe work, my " run " is maybe 2m tops and i have read on their site " global cooling" that you can shorten these with the hire tools and then remake, this sounds much neater as i would not need the 4m anyway.

I will check out your answer grunff, if you say yours is good, then i will probably go this way.

It does get humid even " oop north" and I live close to a school and work nights so leaving windows open is a bit noisy!

Hugh wrote:

I will check out your answer grunff, if you say yours is good, then i
will probably go this way.

Well, it's been good *so far*. I'm told to expect 10-15 years life out
of it, using it most days over the summer. If I get 10 years, I'll be
pretty happy. But it's early days.


--
Grunff

Alan wrote:

I guess that's a side effect of this type of system. Long pipes can be
coiled in loft space or floor void, short ones..... dunno, go for a pro
install version!

It is often the "pro install" bit that is the killer price wise I have
found. Last year when I had the top off the house, it seemed like an
ideal opportunity to sort out "whole house" aircon. Finding the kit was
not that difficult, and prices were not unreasonable - I could have got
coverage for most rooms for well under two grand. However many suppliers
were not prepared to just supply the kit and insisted it would have to
be "installed". The installers however wanted several times the price of
the kit for what sounded like (at most) a couple of days work. It did
seem there was a certain "closed shop" attitude prevalent.

--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

Hugh wrote:

Hi I have been looking at different air conditioning for my home
lounge.
I have looked at the B & Q options and also at
www.global-cooling.co.uk
air conditioning DIY systems. I have looked at the easy fit Air Force
and Millenniumair models, has any one had any experience with either?
I
have heard that I should go for an inverter system if possible?

Advice for a newby appreciated!


House designs and locations vary, some never overheat, some are
absolutely intolerable for months each year.

I wouldnt fit a/c at all, there are better options. I'd go with:

1. If you want the full ac effect, put in an earth pipe. Theyre
effective, cost no more than a/c, and very energy efficient, meaning
costs hardly a thing to run.


But in many cases its not really needed, as a handful of simpler
technologies can each bring temp drops of a few degrees here and there,
adding up to complete comfort. For a lower impact approach:

1. a big external fan on a timer, or better on a differential
thermostat. I've had typically 4-6C drop with this arrangement, max
10C. The idea is to run it evening and night only, bringing in cooler
air for hours cools down the house structure so you get less peak temp
in the next day. Note that one is not much use, you need 2 arranged to
give a through draft. With more thought it may be poss to arrange this
passively: this is a better option when implementable.

Add similar in loft too, lofts cook in summer.

2. Deciduous climbers on the south facing wall really do help, just
work out how many kW is hitting that wall all day every day thru
summer. That alone will gain you another 2-3 degrees.

3. I assume youve already got ceiling fans everywhere.


NT

wrote:
Hugh wrote:

1. a big external fan on a timer, or better on a differential
thermostat. I've had typically 4-6C drop with this arrangement, max
10C. The idea is to run it evening and night only, bringing in cooler
air for hours cools down the house structure so you get less peak
temp
in the next day. Note that one is not much use, you need 2 arranged
to
give a through draft. With more thought it may be poss to arrange
this
passively: this is a better option when implementable.


The problem I find with the UK is that even with an unbearably humid
day the evenings can still be very cool so I wouldn't want my house any
cooler at night thanks. In the UK it's the humidity not the
temperature that is the problem. I'm digging out my garden at the
moment and might lay an earth pipe as an experiment.

wrote:

cooler at night thanks. In the UK it's the humidity not the
temperature that is the problem. I'm digging out my garden at the

That is why you have aircon in its true sense - not just cooling.

--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

wrote:
wrote:
Hugh wrote:

1. a big external fan on a timer, or better on a differential
thermostat. I've had typically 4-6C drop with this arrangement, max
10C. The idea is to run it evening and night only, bringing in
cooler
air for hours cools down the house structure so you get less peak
temp
in the next day. Note that one is not much use, you need 2 arranged
to
give a through draft. With more thought it may be poss to arrange
this
passively: this is a better option when implementable.

The problem I find with the UK is that even with an unbearably humid
day the evenings can still be very cool so I wouldn't want my house
any
cooler at night thanks.

it is sometimes necessary to limit how cold it gets at night.
Thermostats take care of the comfort zone.

On cold nights, what happens is the house air cools until the stat
switches the cooling ventiaion off, then temp rises again due to stored
heat, so the cooling ventilation comes on again etc.


In the UK it's the humidity not the
temperature that is the problem.

If that were really true,

1. people would use a dehumidifier instead of a/c, whereas in reality
it doesnt make much difference

2. evaporative coolers, which improve comfort by several degrees (but
thats all) would make things worse not better.

RH does matter, but it seems to have been blown out of proportion in
popular thinking.


I'm digging out my garden at the
moment and might lay an earth pipe as an experiment.

excellant. If you can put 20-30' of 4" pipe 1m down you should be able
to get seriously cold in summer. Anything less should give you more
reasonable cooling levels.


NT

In article .com,
writes:
In the UK it's the humidity not the
temperature that is the problem.

If that were really true,

1. people would use a dehumidifier instead of a/c,

No they wouldn't because a dehumidifier chucks out loads of heat too.

whereas in reality it doesnt make much difference

because is counteracts the drop in humidity with a rise in temperature.

A/C works very well even if it doesn't drop the temperature,
as it does drop the humidy very significantly.

2. evaporative coolers, which improve comfort by several degrees (but
thats all) would make things worse not better.

They do indeed make things worse, although they often don't work
at all in UK climate as it's too humid. They work very well in
dry heat, which we never get.

RH does matter, but it seems to have been blown out of proportion in
popular thinking.

RH governs you body's ability to cool itself, which is actually
much more important than the temperature.

--
Andrew Gabriel

Andrew Gabriel wrote:
In article .com,
writes:

In the UK it's the humidity not the
temperature that is the problem.

If that were really true,

1. people would use a dehumidifier instead of a/c,

No they wouldn't because a dehumidifier chucks out loads of heat too.

1

whereas in reality it doesnt make much difference

because is counteracts the drop in humidity with a rise in
temperature.

2

A/C works very well even if it doesn't drop the temperature,
as it does drop the humidy very significantly.

3

2. evaporative coolers, which improve comfort by several degrees
(but
thats all) would make things worse not better.

They do indeed make things worse,

4

although they often don't work
at all in UK climate as it's too humid. They work very well in
dry heat, which we never get.

RH does matter, but it seems to have been blown out of proportion
in
popular thinking.

RH governs you body's ability to cool itself, which is actually
much more important than the temperature.

5

5 mistakes

NT

In message .com,
writes
The problem I find with the UK is that even with an unbearably humid
day the evenings can still be very cool so I wouldn't want my house
any
cooler at night thanks.

it is sometimes necessary to limit how cold it gets at night.
Thermostats take care of the comfort zone.

FFS, when I was a kid I had ice on the inside of my bedroom window

--
geoff

In article ,
raden wrote:
it is sometimes necessary to limit how cold it gets at night.
Thermostats take care of the comfort zone.

FFS, when I was a kid I had ice on the inside of my bedroom window

You had glass in your windows? Kids these days...

--
*One tequila, two tequila, three tequila, floor.

Dave Plowman London SW
To e-mail, change noise into sound.

On Sat, 09 Apr 2005 00:02:42 GMT, raden wrote:

In message .com,
writes

it is sometimes necessary to limit how cold it gets at night.
Thermostats take care of the comfort zone.

FFS, when I was a kid I had ice on the inside of my bedroom window

You sound like my folks, but I tell them 'you're not SEVENTEEN now
you're SEVENTY odd!'

Though it doesn't get that cold in summer here, nothing a light duvet
couldn't handle.

cheers,
Pete.

On 6 Apr 2005 07:54:18 -0700, wrote:

1. a big external fan on a timer, or better on a differential
thermostat. I've had typically 4-6C drop with this arrangement, max
10C. The idea is to run it evening and night only, bringing in cooler
air for hours cools down the house structure so you get less peak temp
in the next day. Note that one is not much use, you need 2 arranged to
give a through draft. With more thought it may be poss to arrange this
passively: this is a better option when implementable.

Add similar in loft too, lofts cook in summer.

Making a second loft hatch that has a 'box fan' or similar built in is
a good way of ventilating house and loft.

Problem with modern houses is that it can be difficult to get cool air
coming into a bedroom on the top storey from the window unless there
is a prevailing wind. The above would fix that and help the loft and
ceiling to cool down.

Also moving bed close to open window in summer can help.

cheers,
Pete.

On Thu, 07 Apr 2005 21:58:10 +0100, Pete C
wrote:

Making a second loft hatch that has a 'box fan' or similar built in is
a good way of ventilating house and loft.

I have a box fan and might try this as an experiment.

So, the fan should be blowing into the loft to cool it. Should it be
run during the day (To cool the hot loft) or run at night (To draw
cold air into the house)?

On Fri, 08 Apr 2005 15:00:19 GMT, (s--p--o--n--i--x)
wrote:

On Thu, 07 Apr 2005 21:58:10 +0100, Pete C
wrote:

Making a second loft hatch that has a 'box fan' or similar built in is
a good way of ventilating house and loft.

I have a box fan and might try this as an experiment.

So, the fan should be blowing into the loft to cool it. Should it be
run during the day (To cool the hot loft) or run at night (To draw
cold air into the house)?

Hi,

I doubt it would cool the loft much in the day but it will help cool
it quicker in the evening, and cool the house when indoor temps start
to rise above outdoor.

So I'd switch it on or set a timer for when the indoor temp may start
rising above outdoor (an indoor/outdoor thermometer would help to
determine this) then switch off at daybreak.

For a more permanent install some louvres would help hide the fan
itself, and rubber or foam bushings to minimise any fan noise.

If on broadband a program like 'Weather Exchange' is good for
monitoring outdoor temperatures etc:

http://www.ambientweather.com/weex1.html

cheers,
Pete.

Pete C wrote:
On Fri, 08 Apr 2005 15:00:19 GMT, (s--p--o--n--i--x)
wrote:

Making a second loft hatch that has a 'box fan' or similar built in
is
a good way of ventilating house and loft.

I have a box fan and might try this as an experiment.

So, the fan should be blowing into the loft to cool it. Should it be
run during the day (To cool the hot loft) or run at night (To draw
cold air into the house)?

Hi,

I doubt it would cool the loft much in the day

lofts really cook in summer. Thats one reason upstairs is always hotter
than down. Really though you want a lot of ventilation, and a box fan
isnt a lot.


but it will help cool
it quicker in the evening, and cool the house when indoor temps start
to rise above outdoor.

it does, so does opening windows.


So I'd switch it on or set a timer for when the indoor temp may start
rising above outdoor (an indoor/outdoor thermometer would help to
determine this) then switch off at daybreak.

Yeah. I found that proper control gave a lot more result than rough
control. A dif stat really is important if you want to get a decent
result from it. Without this, the results arent there.


For a more permanent install some louvres would help hide the fan
itself, and rubber or foam bushings to minimise any fan noise.

I would not put a fan on the loft floor at all, it will be a real
annoyance. If you want to try it, sure, but almost any fan is going to
make an unacceptable racket at night.

Fitting extra window locks that allow you to have the top 2" of the
windows staying open is more useful. And putting in crossflow
ventilation in the loft to cool that down.


If on broadband a program like 'Weather Exchange' is good for
monitoring outdoor temperatures etc:

http://www.ambientweather.com/weex1.html

ahh, not heard of that before. Will go look. It offers weather news,
but I saw no mention of real time temp measurement.

I didnt find any commercial diff stats, need to make your own. Not hard
though.


NT

s--p--o--n--i--x wrote:
On Thu, 07 Apr 2005 21:58:10 +0100, Pete C
wrote:

Making a second loft hatch that has a 'box fan' or similar built in
is
a good way of ventilating house and loft.

I have a box fan and might try this as an experiment.

So, the fan should be blowing into the loft to cool it. Should it be
run during the day (To cool the hot loft) or run at night (To draw
cold air into the house)?

It depends what else youve got going, but in mosts cases all the time
24/7. Only if youre doing enough to get interior temps below outdoor
temps is it worth switching such a fan off.

But what... it is cheaper and more reliable to use natural airflow
instead of electric fans. Its also a damn sight nicer to have silence
than some horrible noise all day and night.

How to use natural airflow? 2 loft vents, the thermostatic greenhouse
venting kind. They need no power, and open a window when it gets hot.
You need 2 to get crossflow. Sticking a fan in is easier of course.


NT

Pete C wrote:
On 6 Apr 2005 07:54:18 -0700, wrote:

Add similar in loft too, lofts cook in summer.

Making a second loft hatch that has a 'box fan' or similar built in
is
a good way of ventilating house and loft.

Problem with modern houses is that it can be difficult to get cool
air
coming into a bedroom on the top storey from the window unless there
is a prevailing wind.

Its normally necessary to open 2 windows on oposite sides to get a
through draught.


The above would fix that and help the loft and
ceiling to cool down.

Ideally you want more air throughput than a small box fan will normally
give - it should help, but I doubt it would be dramatic.


Also moving bed close to open window in summer can help.

If youve got sash windows, opening the top half rather than the bottom
gives you another 1C apx benefit.


NT