B
BHI
Are there any/many disadvantages / inefficiencies to over-spec'ing a combi boiler's heat output (ie. 40kW!) in order to get the higher flow-rate for showers, when it's then far in excess of the CH requirement (calculated just over 10.2kW or 35,000 BTU/Hr). How well do boilers modulate down?
The house is only a 3-bed, but will have separate shower cubicle and bath in the main bathroom, and an en-suite in the main bedroom. Both showers will have 3 x body-jets each as a (infrequent) diverter option, but we don't want the spray to just piddle out... Cold water mains supply is good. Perhaps looking to convert the loft in the distant future too (with en-suite maybe?).
Unfortunately a system boiler / un-vented cylinder isn't a practical solutions any more for various reasons (unless we converted the loft right now, but money isn't there - nor even just for the unvented rig!).
Apologies for all the questions...
The house is only a 3-bed, but will have separate shower cubicle and bath in the main bathroom, and an en-suite in the main bedroom. Both showers will have 3 x body-jets each as a (infrequent) diverter option, but we don't want the spray to just piddle out... Cold water mains supply is good. Perhaps looking to convert the loft in the distant future too (with en-suite maybe?).
Unfortunately a system boiler / un-vented cylinder isn't a practical solutions any more for various reasons (unless we converted the loft right now, but money isn't there - nor even just for the unvented rig!).
Apologies for all the questions...