Woodstove, I want BIG, installer says I'll melt, thoughts?

Woodstove, I want BIG, installer says I'll melt, thoughts?

Author
Discussion

eliot

11,418 posts

254 months

Tuesday 17th February 2015
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I've got a 6kw stove in my garden lodge, which is 6m x 6m with a 3m vaulted ceiling. It's made of 34mm thick timber with no other insulation. Takes a couple of hours to get up to temperature - but once it is, its stays warm all day without the fire burning.

hoppo4.2

1,531 posts

186 months

Tuesday 17th February 2015
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I have a 5 kw in a 4x4 room solid walls no insulation. Single glazed with suspended floors and if i get it on full blast its still not enough. Unless i fill it with coal and get it glowing white.

I plan to get something much larger.

softtop

3,051 posts

247 months

Tuesday 17th February 2015
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if it was not for lethargy, I would have started this thread myself today..

My room is 5m square with a 7 foot high ceiling. The calculations say 4Kw, I said 8 and the installer said 5 max or you will melt. The room has three open sides and no insulation above or in the walls. It has been freezing over the last months.

Now it is working I am thinking that a 10 would have been better because:

1. like you, I wanted to heat more than the room
2. I don't believe the installers and they are scared of selling someone a burner who sits with the door shut and they roast
3. my room is only just warm,24 degrees, not as warm as the open fire though I am getting benefits..

The upstairs doors are all left open and the heat is rising, I am getting away with no central heating and upstairs is at about 18 degrees. Based on this then maybe your massive one will be ok. Be prepared for some serious heat though, it sounds a monster.

The moral of the story is that 'professionals' have one agenda and you have to live with your expense. Any smaller for me and I would have wasted my money.


defblade

7,429 posts

213 months

Tuesday 17th February 2015
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frank hovis said:
When dogs get really warm, they expand and eventually become lighter than air. This example is a Chihuahua who slept for about half a hour too long. It can take days for them to contract back to normal, and in the meantime they must be floated on a lead for all walks or they may keep rising, never to be seen again. Owners are advised to also carry an umbrella on these walks, as the dog may not take note of what's below when it does the inevitable.

softtop

3,051 posts

247 months

Tuesday 17th February 2015
quotequote all
defblade said:
When dogs get really warm, they expand and eventually become lighter than air. This example is a Chihuahua who slept for about half a hour too long. It can take days for them to contract back to normal, and in the meantime they must be floated on a lead for all walks or they may keep rising, never to be seen again. Owners are advised to also carry an umbrella on these walks, as the dog may not take note of what's below when it does the inevitable.
That can happen but in this case it was a joke that caused this effect. "I met a man with a wooden leg called Smith"

"What was his other leg called?"

Lefty

16,152 posts

202 months

Tuesday 17th February 2015
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26kw is nuts. Our house is a draughty old barn conversion, living room is 15m x 5m x5m. It can get too hot with our 14kw wood burner!

Cupramax

10,478 posts

252 months

Tuesday 17th February 2015
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Baldinho said:
frank hovis said:


This my woodburner with obligatory hairy beast in front of it

It's a 6kw multi fuel in a room that approx 6m x4.5m

Even with doors open to the kitchen and un heated hallway it's so warm we sit in t shirts

A 24k is mental ! And would go through horrendous amounts of wood per hour
On first sight I thought you were roasting a pig on the ceiling!
rofl

hidetheelephants

24,225 posts

193 months

Wednesday 18th February 2015
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26kW! You'll be like Casey Jones stoking a stove that size, and burning a forest's worth per month.

Le TVR

3,092 posts

251 months

Wednesday 18th February 2015
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First off, is this 26kW the nominal or max rating?

I have a 27,5kW Deville wood stove that heats the centre section of our farmhouse. Its in a 60 sq m lounge with hot air feeds to a 60 sq m master bedroom above which has open cieling over 5m high. Total heated volume must be around 450+ cubic metres. Full output will heat it all quite quickly and then the thermostat keeps it at 20° downstairs ans 18° upstairs at fairly low output, probably around 10kW.
This is a very old farmhouse with 60cm thick walls and minimal insulation.


herewego

8,814 posts

213 months

Wednesday 18th February 2015
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hoppo4.2 said:
I have a 5 kw in a 4x4 room solid walls no insulation. Single glazed with suspended floors and if i get it on full blast its still not enough. Unless i fill it with coal and get it glowing white.

I plan to get something much larger.
Why don't you insulate the walls instead? You'll get quicker temperature response and less work feeding the fire.

Rosscow

8,755 posts

163 months

Wednesday 18th February 2015
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4 things will happen if you buy a 26kw stove.

1) You won't be able to sit in your lounge
2) You won't be able to sleep upstairs as it will be about 35 degrees
3) You'll near drown in the condensation you'll create
4) You'll die form exhaustion due to the amount of wood you need to chop/move/buy

I have a 6kw stove in my kitchen diner and a 4kw stove in my lounge.

Our house is timber framed, timber clad, built in the 30's. I have put 3" celotex in all external walls and have insulated the ceiling. We have wooden floors with no insulation underneath.

Normally we get buy with just the 6kw stove going, if we're settling in for the evening in the lounge we'll light that one as well.

Our house is normally between 23 and 25 degrees, and first thing in the morning (6.30am) when I light the fire the temperature has dropped to around 18 degrees.

Bonefish Blues

26,648 posts

223 months

Wednesday 18th February 2015
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OP, remember the face melt scene in Raiders of the Lost Ark?

Liszt

4,329 posts

270 months

Wednesday 18th February 2015
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it's like sitting infront of 8 3-bar electric fires.

You will melt

jet_noise

5,645 posts

182 months

Wednesday 18th February 2015
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cheddar is Jeremy Clarkson AICMFP.

Powwwerrr smile

The PH world life rule of "too much power is just enough" applies to wheeled conveyances not domestic heating biggrin

smifffymoto

4,545 posts

205 months

Wednesday 18th February 2015
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I heat our kitchen with a 14kw woodburner and that gets too hot for comfort sometimes.The kithen is 8x7x4 in a 300 year old French farmhouse with very little in the way of insulation.

wombleh

1,789 posts

122 months

Wednesday 18th February 2015
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We found the stove has to be run fairly hot to keep the chimney warm otherwise it can cause issues with airflow and tar formation, although with the size of stove you're talking about having anything left above it might be more of a concern.

Edited by wombleh on Wednesday 18th February 13:22

simoid

19,772 posts

158 months

Wednesday 18th February 2015
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"Foxes keep coming into my chicken coop, through the holes in my fence, and eating my chickens. What minigun should I buy?"

crankedup

25,764 posts

243 months

Wednesday 18th February 2015
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26kw !!!!!!!!!!!!!!!!!!!!!yikes you're visitors will have to bring their bathing costumes.

bigdom

2,083 posts

145 months

Wednesday 18th February 2015
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I tend to agree, you need to sort out the other issues first, you'll either baste yourself in suntan lotion, or not be able to run it hot enough, which has other issues, especially once renovated.

You'll never run it at 26kw, most of the time you sit between 50-70% of complete output, even so, it will eat wood at a prodigious rate. We have an 8kw in a 8m x 8m room (12-15 logs per night in winter) and whilst I'm in a t-shirt and shorts, the missus can still be under a blanket!

Doctor Volt

336 posts

125 months

Wednesday 18th February 2015
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C Lee Farquar said:
I agree, saves a lot of effort if you process your own.

We have a 13kw one with poor insulation, if it gets too hot we open the windows to blow the heat around. You can just put less wood on.

Father recently had a 5kw one fitted and struggles to get enough heat.

Get what you want!
This is the only sensible post here. You control the output by the ammount of fuel you put in the stove