I'm trying to source some storage heaters for our offices.

From what I've learnt from the Dimplex site, the amount of heat required
can be calculated based on the room area, number of outside walls and
whether cavity filled walls or not. The amount of heat can then be
translated into an Input Rating required from the storage heater.

I contacted an electrical contractor today and gave them the above details.

One of the rooms is 54sq metres with one hollow outside wall. They
suggested an XL24 from the Dimplex range, but this only has an input
rating of about 3kw. I have calculated that an input rating of 7kw is
required to get the room up to 21c (Dimplex recommended).

Have I missed something?

"Paul" wrote in message
...
I'm trying to source some storage heaters for our offices.

From what I've learnt from the Dimplex site, the amount of heat required
can be calculated based on the room area, number of outside walls and
whether cavity filled walls or not. The amount of heat can then be
translated into an Input Rating required from the storage heater.

I contacted an electrical contractor today and gave them the above
details.

One of the rooms is 54sq metres with one hollow outside wall. They
suggested an XL24 from the Dimplex range, but this only has an input
rating of about 3kw. I have calculated that an input rating of 7kw is
required to get the room up to 21c (Dimplex recommended).

Have I missed something?


No you haven't. A 3KW will not heat 54 sq m unless you have a celiling
height of about 6". I gauge that as a 5x10m room, I have a 3.4kw in a 6x8m
(48sqm) room and it barely takes the chill off it (the room as 3 internal
walls and large single glazed windows at one end. You will need at least
2x3.4kw to be semi-comfortable... about £450 for both from wholsalers plus a
couple of 7 day timers at £40 each. So expect to pay a spark about £1K all
in.

TonyK wrote:


"Paul" wrote in message
...
I'm trying to source some storage heaters for our offices.

From what I've learnt from the Dimplex site, the amount of heat required
can be calculated based on the room area, number of outside walls and
whether cavity filled walls or not. The amount of heat can then be
translated into an Input Rating required from the storage heater.

I contacted an electrical contractor today and gave them the above
details.

One of the rooms is 54sq metres with one hollow outside wall. They
suggested an XL24 from the Dimplex range, but this only has an input
rating of about 3kw. I have calculated that an input rating of 7kw is
required to get the room up to 21c (Dimplex recommended).

Have I missed something?


No you haven't. A 3KW will not heat 54 sq m unless you have a celiling
height of about 6". I gauge that as a 5x10m room, I have a 3.4kw in a 6x8m
(48sqm) room and it barely takes the chill off it (the room as 3 internal
walls and large single glazed windows at one end. You will need at least
2x3.4kw to be semi-comfortable... about £450 for both from wholsalers plus a
couple of 7 day timers at £40 each. So expect to pay a spark about £1K all
in.

Thanks Tony. It's a relief to know you've done something right, but
exasperating to find that someone who works with storage heaters daily,
can't work out what we need correctly.

I'd not considered 2x3.4kw units. I was looking at the Dimplex VFMi range
which goes up to about 7kw and costs about £950. Suppose the cost's about
the same, but would 2x3.4kw units be more efficient because they're spaced
out?

I suppose two separate units would be more versatile when it gets to
Spring, allowing one to be turned off as it gets warmer.

I've seen the VFMi range at an on-line shop, but are you saying that a
local electrical wholesaler would deal with us? Would we be able to buy 3
cheaper than a single unit?

On Wed, 19 Jan 2005 22:23:29 GMT, (Paul)
strung together this:

Thanks Tony. It's a relief to know you've done something right, but
exasperating to find that someone who works with storage heaters daily,
can't work out what we need correctly.

Most people just guess, and get it wrong.

I'd not considered 2x3.4kw units. I was looking at the Dimplex VFMi range
which goes up to about 7kw and costs about £950. Suppose the cost's about
the same, but would 2x3.4kw units be more efficient because they're spaced
out?

Yep.

I suppose two separate units would be more versatile when it gets to
Spring, allowing one to be turned off as it gets warmer.

Also means you don't lose all heat if one goes faulty and it's cheaper
to replace one standard smaller unit than one large specialist one.

I've seen the VFMi range at an on-line shop, but are you saying that a
local electrical wholesaler would deal with us? Would we be able to buy 3
cheaper than a single unit?

Yep, pop down your local wholesalers and see what they've got.
--

SJW
Please reply to group or use 'usenet' in email subject

"Lurch" wrote in message
...
On Wed, 19 Jan 2005 22:23:29 GMT, (Paul)
strung together this:

Thanks Tony. It's a relief to know you've done something right, but
exasperating to find that someone who works with storage heaters daily,
can't work out what we need correctly.

Most people just guess, and get it wrong.

I'd not considered 2x3.4kw units. I was looking at the Dimplex VFMi range
which goes up to about 7kw and costs about £950. Suppose the cost's about
the same, but would 2x3.4kw units be more efficient because they're
spaced
out?

Yep.

I suppose two separate units would be more versatile when it gets to
Spring, allowing one to be turned off as it gets warmer.

Also means you don't lose all heat if one goes faulty and it's cheaper
to replace one standard smaller unit than one large specialist one.

I've seen the VFMi range at an on-line shop, but are you saying that a
local electrical wholesaler would deal with us? Would we be able to buy 3
cheaper than a single unit?

Yep, pop down your local wholesalers and see what they've got.
--

SJW
Please reply to group or use 'usenet' in email subject

Agreed, try your local Denmans, they have their own range of heaters. I've
put in about 15 so far this winter (2 yesterday) with no problems.

In article , TonyK
writes

Agreed, try your local Denmans, they have their own range of heaters. I've
put in about 15 so far this winter (2 yesterday) with no problems.

I've only ever fitted these second hand, when you buy them new do you get
the case & the bricks in separate packages? Otherwise I would imagine
they are immovable.
--
fred

"fred" wrote in message ...
In article , TonyK
writes

Agreed, try your local Denmans, they have their own range of heaters.
I've
put in about 15 so far this winter (2 yesterday) with no problems.

I've only ever fitted these second hand, when you buy them new do you get
the case & the bricks in separate packages? Otherwise I would imagine
they are immovable.
--
fred

Yep, bricks are separate.

In article , TonyK
writes

"fred" wrote in message ...
In article , TonyK
writes

Agreed, try your local Denmans, they have their own range of heaters.
I've
put in about 15 so far this winter (2 yesterday) with no problems.

I've only ever fitted these second hand, when you buy them new do you get
the case & the bricks in separate packages? Otherwise I would imagine
they are immovable.
--
fred

Yep, bricks are separate.

Ta
--
fred