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Hot Air

I’m thinking about changing my woodburner and have received a quote for installing a new one. My current, 20 year old(?) model is rated at 10kW and doesn’t do a brilliant job. The suppliers are insisting that my room, 35m2, high ceiling, stone walls, tiled floor and open stairway, needs a 6.5kW stove to do the job and insist that fitting another 10kW poele would be inappropriate. I was wondering what size woodburners other people use.
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Re: Hot Air

We have a chimney and not a poêle so can't help. But the space is the same as yours and the chimney heats the room very well.

But I am curious as to why your 10 kW does not work so well ? What is the room temperature when it is on ?

How well insulated in the room ? I assume your walls are 'pierre apparent' ????. At out last house we had a massive chimney and all the walls were stone. But it never felt warm. In the house we live in now, the walls are very well insulated (although stone) and the chimney is smaller but we are much hotter.


According this....

https://www.quelleenergie.fr/questions/quelle-surface-peut-on-chauffer-avec-un-poele-a-bois

...it is 1 kW per 10 sq metres so your chappy is quite correct.
ner ner nee ner ner!!
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Re: Hot Air

We have a similar sized room, dining room, lounge, high ceiling/atrium over the lounge etc, reasonably well insulated.
Heated with a Villager "A" flat top, which is 16 kw max output, and a stove fan on top, you need to have a bit of heating capacity in reserve for when it gets really cold if it's your primary source of heating.
Also, we can burn it hot to get the room up to temperature and then turn it down - it's nice to have more heating capacity than you need when it's really cold - like at the moment!
Choice of stove depends of course on the room you have available for it.
http://www.villager-stove-specialist.co.uk/multifuel-woodburning-stoves/villager-a-woodburning-stove.html
At any time the urge to sing "The Lion Sleeps Tonight" is only a whim away.
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Re: Hot Air

<BLOCKQUOTE><table width="85%"><tr><td class="txt4"><img src="/forums/completefrance-forums/cs/Themes/default/images/icon-quote.gif">&nbsp;<strong>Harnser wrote:</strong></td></tr><tr><td class="quoteTable"><table width="100%"><tr><td width="100%" valign="top" class="txt4">We have a similar sized room, dining room, lounge, high ceiling/atrium over the lounge etc, reasonably well insulated.
Heated with a Villager "A" flat top, which is 16 kw max output, and a stove fan on top, you need to have a bit of heating capacity in reserve for when it gets really cold if it's your primary source of heating.
Choice of stove depends of course on the room you have available for it.
http://www.villager-stove-specialist.co.uk/multifuel-woodburning-stoves/villager-a-woodburning-stove.html</td></tr></table></td></tr></table></BLOCKQUOTE>
That’s what I would have thought. Installing a smaller poele makes no sense to me. The room is comfortable in all but the coldest weather using only the poele but the corners never get above 15 degrees and that’s only since I started using a stove top fan. I just don’t understand why the ‘experts’ believe that a smaller poele is the way forward and are reluctant to sell me the bigger, 10kW, more expensive stove that they also sell.
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Re: Hot Air

Their margin is better on the smaller one, maybe a special purchase, maybe a quantity discount, maybe its one that got thrown back at them, whatever, but you are right to question their motives and if they cannot justify their position or become tetchy then you will know you are right.

 

Never had a woodburner but from what I have read and absorbed over the years there does not seem to be any downside in having the next size up just in case, your desire makes total sense.


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Re: Hot Air

BinB, it is most important that the stove draws air from the outside otherwise you get draughts even when it is heating well.
What make of stove are they suggesting, is it NF? Do not accept anything else. I suggest Scandinavian ones.
Ticking over, just about.
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Re: Hot Air

<BLOCKQUOTE><table width="85%"><tr><td class="txt4"><img src="/forums/completefrance-forums/cs/Themes/default/images/icon-quote.gif">&nbsp;<strong>woolybanana wrote:</strong></td></tr><tr><td class="quoteTable"><table width="100%"><tr><td width="100%" valign="top" class="txt4">BinB, it is most important that the stove draws air from the outside otherwise you get draughts even when it is heating well.
What make of stove are they suggesting, is it NF? Do not accept anything else. I suggest Scandinavian ones.</td></tr></table></td></tr></table></BLOCKQUOTE>

The devis includes the installation of a ventilation pipe to the exterior of the house. It is a Scandinavian make that I’m interested in.
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Re: Hot Air

I have just written a long post which has disappeared, so sorry if it comes up again.

You say your current stove is not efficient. We had a friend in France whose stove was useless and what was considered a good make, high chimney and an old house sufficient to give enough air intake. We had a friend in the UK with a Norse or Jut name...... or what ever, considered a good make, and that too was useless, both had tall chimneys, old houses and enough air intake.

We had a Turbo Fonte in France, and that was great.

Now we have two, as we have two big rooms, one has a Contura 26T High in our main sitting room, with an oven fitted into the top part, which we use most days in winter. Last log went on at midnight and the soapstone still has some warmth in it, about  13h30 now.

The other is another contura soap stone, but a dinkier model as it is a room we do not use much. It still heats a big room excellently well and we need the door open.

Both have direct air intake from outside.


I had wanted a Nuuna Uni (finnish), but could not get one in England, I did try.  Hence, the Conturas, (swedish).  Found Willach, a german make about a year after we had ours installed and probably would have given that a try instead.If we had stayed in France would have gone for a Tulikivi (finnish) or the Willach.

i would never go for a model that had a lesser kw'age really, just get it going and feed it less, or open doors to warm the rest of the house, which is a very good solution.

Also, very very dry wood, makes all the difference in the world, although in fairness,  our friends, both  in France and our friend in England who had lousy stoves, both did have very dry wood, easy to tell, as it burns well and does not smoke. Where the heat went, well, up the chimney, instead of radiating it outwards???? probably. No idea why.

We were recommended a belgian make, Nestor something, but I really wanted soapstone. It was not by far as dear as we paid, but the salesman had one and thought it was the best in the shop. We appreciated his candour.






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