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Favorite rad sizing tool?

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Knappers

Plumbers Arms member
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Gas Engineer
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Does anyone have a favorite rad sizing app or site? I've used a few but they seen to vary and many are quite clunky.
Any out there with decent accuracy, a whole house report would be amazing too...
 
I tried a few last year before replacing all my radiators and liked the Myson Heat Loss Manager best because it lists the heat loss from each room for each element: glazing, external wall, floor. roof glazing, roof, ventilation and heat-up factor.

Of course this needs some work to enter all the details but a calculation is only as good as the data input.
 
Enthalpy said:
I tried a few last year before replacing all my radiators and liked the Myson Heat Loss Manager best because it lists the heat loss from each room for each element: glazing, external wall, floor. roof glazing, roof, ventilation and heat-up factor.

Of course this needs some work to enter all the details but a calculation is only as good as the data input.
Click to expand...
That sounds good, it could also help highlight where it might be worth spending money to improve heat retention.
 

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