Woodburningstovetrackworld will have the answer to this I am sure…

Our lounge is 4.5 x 8.5 x 2.7 meters. We have been recommended a range of stoves, from a jotul f100 (nominal 5kw, max 7.5 kW) to a scan-Andersen 8-2 (not sure nominal, but maxes at 9 kW).

So, which recommendation is right?

Similar sized room and a 5kw jotul here. If I run it flat out I have to open the patio doors and sit in my pants.

A Jotul F602 is the only heating in our house which is about 200m3. Filling it twice which gives about 4h running has the house up to 22°C from 18°C having not heated since yesterday. 4-8°C range outside since yesterday. However, the house is pretty well insulated and your room may not be.

Our house is old and not well insulated if that makes much difference.

sit in my pants.

As oppose to not wearing “pants”? I suspect you mean you will be sitting in your under pants?

old and not well insulated

You’ll probably need more than 5kw then. 7-8kw at a guess. One of the manufacturers has a calculator for this – can’t remember which one though.

As oppose to not wearing “pants”? I suspect you mean you will be sitting in your under pants?

Creeping Americanisms… 😯

Not sure about sizing but we have a Scan Anderson and have been very happy with it. I call it Trevor. Yep.

i went from a 4.5kw to a 7kw (castech alberg 7) in my living room – the 4.5 got the room to temperature ok , but when you opened the door it took a long time to heat the house.

the 7kw is just brilliant , it heats the room quickly – it then goes on to heat the house very quickly also – how ever if your goal is not to heat the house i wouldnt bother going so big.

Is the scan stuff good? I heard it was a subsidiary of jotul – not sure if thats true.

our room is an odd 6.5 x 4.2. heated by a 5kw morso which if run full on can easily make it uncomfortably warm. on a full evening burn we open the door to our unheated kitchen to warm that and make the living room comfortable. 1930s jerry built badly insulated flat roofed semi.

Believe your right STS, Scan is a subsidiary of Jotul. The look of the stove swung it for us. It’s an excellent little thing. Wish we’d got something a tad bigger but we didn’t want air vents added so that limited our choices.

Still find we have to open the windows a tad and all the doors in the house when it’s fully cranked up.

If you take your house as poorly insulated typically pre 1950,s you should be looking at a stove output of around 9 to 10 KW. Other considerations should be taken into account like exposed locations, Tempreture requirements, Lifestyle etc
Hope this helps

Well – just got a quote. A LOT more expensive than first suspected!

Scan-Andersen 8-2 (up to 9 Kw) stove
10.5 m external twinwall flue
Slate hearth.
Fitting including scaffolding.

Price? Wait for it…
£4800!

Is that over the top? Any suggestions on how can I reduce the price on that? Cant have a shorter flue + need scaffold to get up a 30 foot gable end.

£1600 if that is fitting/scaffolding (HETAS certified).

how much/how big is your hearth ?

my mate was getting quoted 4-500 quid a pop for a cut and finished slate hearth – delivered – not fitted.

got him an EX snooker table caithness black slate – cut and polished for just over 100 quid. – 75 for the reclaimed slate delivered and 35 to cut and polish it.

looks the nuts.

Your twinwall flue is a serious chunk of that,as is your hearth. Even ebay shows decent sized bits of slate of a lot less.

Hmmm – yep – might chase up the hearth cost. I think the stove is around £1200. After installation, that leaves £2000 in the flue and the hearth. So, maybe it’s actually a reasonable quote? The flue is absolutely massive!

As duckman says… the twinwall be a big proportion of that cost.
Wait until the summer and buy used stuff off ebay.

I’d say the Jotul F100 will be fine. We’ve had a couple of different stoves and the 5kW nominal stoves are perfect for “rooms” i.e. a normal room with a normal doorway to rest of the house. Any bigger and you’ll end up far too warm and have to “sit in your pants” as stated above.
If you intend to use it to heat the house then go for the bigger one but be prepared to be sitting in a room like a furnace when at full pelt.
We have a nominal 7kW stove in a room thats 80m² but is also open plan to the rest of the old and draughty victorian house and its plenty warm.

Slate hearth.

Avoid slate, it’ll mark too easily.

Our Stonemason recommended some granite, and I buffed all the shine out so it looks like slate – and hasn’t marked at all.

A lot cheaper too.

Thanks Chief – the room is kind of odd. It has 2 sets of ‘patio’ doors (one to outside, one to conservatory, and then a set of french doors into the dining room. Thus, the room has lots of ways in which it loses heat!

Still reckon a 5 km nominal (7.5 max) would do the trick? I prefer the jotul F100, but the scan is slightly larger.

“Avoid slate, it’ll mark too easily.”

really – when i can be arsed to wipe my slate with a damp cloot it looks like it did when new…..- but then mines rough cut not polished.

also an ecofan really made a difference to the “overheating the room” that chief refers to. my old 4.5kw used to be able to over heat the room till then.

with the 7kw and no ecofan you cant sit in the room and be comfortable as all the heat used to hover around the stove. – used to reach 27degrees. ecofan on with the door open the room sits at a comfortable 21/22 on the heating thermometer.

Our stove specialist advised us that if there’s a choice, you should go for the smaller stove meaning you’ll be burning it harder and hotter, therfore cleaner. There’s nothing worse than an oversize stove shut down and sooting up the glass and the flue.

Ecofans are good but only really required (AFAIK) if you have a radiant stove and the heat is local to the stove as described above. If you get a convector type stove (usually slightly more £££) then the room heat is much more even.

chief1409, 80m2 room? that’s a big un, 13kw would be the typical output to keep that warm.

twinw4ll – yes, it is big. Open plan kitchen, dining and living area. I should’ve said we use mix of the stove and underfloor heating. The underfloor just takes the edge off really (at least that’s the way I’ve got it set up) and the stove provides the bulk of the heat. I’d put in a bigger one if i was relying on the stove alone but not sure I’d go as far as 13kW!