Originally Posted by
fergie
Ultimately it was my decision. One installer specced the 24 and another the 32. I went with the 24 spec installer, but we agreed to fit the 32. If there was a 26 or 28 option I would have picked that. Part of my decision was knowing it could modulate down and also not wanting to find at a later date (especially after adding an extension) that I had to shell out another 2-3k for the boiler to be changed again. Also the extra hot water heating power is worth it.
Though my house is 9y old and well insulated, being aprox 220m2, the 24 glowworm simply couldn't cope at the height of the Scottish winter. Yes there is an argument that with evohome you can downsize the boiler further, but I also felt it's better to have something efficiently giving 75% effort rather than struggling at 100%- esp in terms of stress and reliability.
Is there a way to log stats from the boiler rather than manually checking it?