My Gem combi boiler has died and I can't decide whether to ask for
Vaillant EcoTEC 824 or 831 replacement.
Old boiler gave DHW max 26.4 Kwh.
824 = 23 max Kwh
831 = 31 max Kwh
Thing is, the HW flow was ok but not great with old boiler, but I never needed to set the temp dial above half way or water was scalding.
Does this suggest that flow limitation is caused by mains pressure, or would I see faster HW flow with the more powerful boiler?
I reckon either one would cope with CH ok - 10 rads in 3 bed EOT.
Thanks for any advice.
Vaillant EcoTEC 824 or 831 replacement.
Old boiler gave DHW max 26.4 Kwh.
824 = 23 max Kwh
831 = 31 max Kwh
Thing is, the HW flow was ok but not great with old boiler, but I never needed to set the temp dial above half way or water was scalding.
Does this suggest that flow limitation is caused by mains pressure, or would I see faster HW flow with the more powerful boiler?
I reckon either one would cope with CH ok - 10 rads in 3 bed EOT.
Thanks for any advice.