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winty85
I have 22 rads two bathrooms and two heating zones (upstairs and downstairs) and a 250litre unvented cylinder. I want a worcester bosch boiler but what size would be best?
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Generally, big house big boiler
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winty85
Guessed that would 40kws do it?
Well you need approx 8kW for your hot water demand.
As for the rest, it's impossible to know without knowing either the total heat loss for your rooms, or the type (manufacturer & size) of your radiators.
Assuming an average of 1.5kW per rad, you should just be OK with a 40kW boiler, but without working out the heat losses there's no way of knowing.
As for the rest, it's impossible to know without knowing either the total heat loss for your rooms, or the type (manufacturer & size) of your radiators.
Assuming an average of 1.5kW per rad, you should just be OK with a 40kW boiler, but without working out the heat losses there's no way of knowing.
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