Hi
I am looking to replace our two Vaillant boilers (20 years old now) with some newer more efficient condensing boilers and wanted some advice on the setup.
Currently we have 2 x 28Kw boilers for our house which is split into two zones (upstairs and downstairs) and has a 300 litre unvented water cylinder.
I have done the various website calculations based on property size, glazing, insulation etc. and they come back with around 54 Kw so I think we are currently with the right sized boilers.
If we go for one boiler, we are looking at a small commercial boiler. But we could go for two boilers again and stay on the higher residential end. Is there a right way to do this or does it come down to preference? Would two boilers be slightly more efficient than a single larger boiler.
I am also looking at weather compensation controls etc. (which we do not have at present) and wonder how this would, or wouldn't, cope with two boilers linked.
Thanks for the advice!
I am looking to replace our two Vaillant boilers (20 years old now) with some newer more efficient condensing boilers and wanted some advice on the setup.
Currently we have 2 x 28Kw boilers for our house which is split into two zones (upstairs and downstairs) and has a 300 litre unvented water cylinder.
I have done the various website calculations based on property size, glazing, insulation etc. and they come back with around 54 Kw so I think we are currently with the right sized boilers.
If we go for one boiler, we are looking at a small commercial boiler. But we could go for two boilers again and stay on the higher residential end. Is there a right way to do this or does it come down to preference? Would two boilers be slightly more efficient than a single larger boiler.
I am also looking at weather compensation controls etc. (which we do not have at present) and wonder how this would, or wouldn't, cope with two boilers linked.
Thanks for the advice!