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- 3 Jul 2016
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Hi,
In the middle of an house extension and would appreciate some guidance on boiler sizing.
The house is a 3 bed detached two storey house built in 1960s so has small 50mm filled cavity walls. Width = 7m, depth = 8m, double glazed & insulated, room height = 2.4m.
Extending two storey 3.2m on the side, On the back one storey across the whole width = 10m.
Will have 1 bath, 2 showers, 2 basins.
All downstairs will have underfloor heating. Upstairs will have radiators.
Current boiler is a conventional Gloworm Flexicom 18hx, less than 5 years old. It is in one of the bedrooms so has to be moved when the new extension is water tight.
Bits in the loft look well thought out (cold storage tank, immersion tank with elecrtic heater element, radiator filler tank, magnet filter)
I don't need the space in the loft so was planning to keep all the tanks in the loft and just go for a conventional boiler. Was hoping to place the boiler in the loft in the gable end of the new two storey side extension and just route the two pipes that go into the existing boiler approx 5m.
I've used a few of the boiler sizing calculators. One of them suggest that I only require a 15kW boiler. British Gas man said that I may be able to get away with just moving the Gloworm 18kW but I would rather not pay once to move it and then again to replace with a biger boiler.
Any advice on boiler sizing when half the house will have UFH would be greatly appreciated.
Ant
In the middle of an house extension and would appreciate some guidance on boiler sizing.
The house is a 3 bed detached two storey house built in 1960s so has small 50mm filled cavity walls. Width = 7m, depth = 8m, double glazed & insulated, room height = 2.4m.
Extending two storey 3.2m on the side, On the back one storey across the whole width = 10m.
Will have 1 bath, 2 showers, 2 basins.
All downstairs will have underfloor heating. Upstairs will have radiators.
Current boiler is a conventional Gloworm Flexicom 18hx, less than 5 years old. It is in one of the bedrooms so has to be moved when the new extension is water tight.
Bits in the loft look well thought out (cold storage tank, immersion tank with elecrtic heater element, radiator filler tank, magnet filter)
I don't need the space in the loft so was planning to keep all the tanks in the loft and just go for a conventional boiler. Was hoping to place the boiler in the loft in the gable end of the new two storey side extension and just route the two pipes that go into the existing boiler approx 5m.
I've used a few of the boiler sizing calculators. One of them suggest that I only require a 15kW boiler. British Gas man said that I may be able to get away with just moving the Gloworm 18kW but I would rather not pay once to move it and then again to replace with a biger boiler.
Any advice on boiler sizing when half the house will have UFH would be greatly appreciated.
Ant