I agree, but obviously the OP is needs reassurance. The on-line calculators may come up with less.This is hilarious! why the detective work? the OPs exisiting boiler is already 12kw, if that one heats the house ok then so will the new one!
Is a 12kw boiler sufficient for a 3 bed semi?
- Thread starter zj
- Start date
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Thanks guys for your input, used the sedbuk website and it came out to just over 15kw.
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House is 15 years old and is very well insulated and stays warm.
Windows are currently old wooden frame double glazing but these are being updated to upvc and i took this into consideration on the sedbuk calculator.
There is a gas line that runs under the property and looks like a 22 when it goes in but no idea how far it goes.
There is then a 15mm pipe that comes out the floor in the kitchen that supplies the stove and the current boiler.
Could i fit a 15kw with the current pipework or should i run a new gas line?
Windows are currently old wooden frame double glazing but these are being updated to upvc and i took this into consideration on the sedbuk calculator.
There is a gas line that runs under the property and looks like a 22 when it goes in but no idea how far it goes.
There is then a 15mm pipe that comes out the floor in the kitchen that supplies the stove and the current boiler.
Could i fit a 15kw with the current pipework or should i run a new gas line?
Thats exactly what i was thinking, but would i have to have the pipework upgraded if i wanted a 15kw boiler?
In that case a 15kW boiler sounds too big. I suggest you try the other calculator as the Sedbuk one can be confusing.
Some things to note with both calculators:
1. The height is the room height - floor to ceiling
2. A semi detached has only three external walls - front, back and the non-attached wall.
Right, the other calculator doesnt work when you click next.
I made an error on the sedbuk calculator the first time round with the number of exterior length walls and height too!
So did it all again and looks like 12kw will be fine with double glazing, cavity wall insulation and sufficient loft insulation.
I made an error on the sedbuk calculator the first time round with the number of exterior length walls and height too!
So did it all again and looks like 12kw will be fine with double glazing, cavity wall insulation and sufficient loft insulation.
Do you use Firefox or some other browser, i.e not Internet Explorer? The EST calculator seems to have a problem if you do. I have emailed EST and they say there is nothing wrong!
You are not the first! The EST calculator more user friendly.
Taken a long time to confirm the obvious, but I hope it was worth it.
A bit like the 3 volumes of Principia Mathematica by Russell and Whitehead which takes over 360 pages to prove that 1+1=2!!!
Both online calculators already include the 2kW for the cylinder in the result, so there is no need to add it a second time.
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