Radiators for A2W system

Gael23

Looking for recommendations on Radiators for an Air to Water heat Pump system, not realistic to redo the whole house to install underfloor heating

Biker1

Gael23 wrote: »

Looking for recommendations on Radiators for an Air to Water heat Pump system, not realistic to redo the whole house to install underfloor heating

You need to get room by room heat loss calculation done. Only then will you know what output the radiators must achieve. Don't be fooled by sales talk saying you must install aluminium rads. 500w output from a steel rad is the same as 500w output from an aluminium rad at a given delta T. The only difference will be in the size of the two and is not as much as people think.

Gael23

Biker1 wrote: »

You need to get room by room heat loss calculation done. Only then will you know what output the radiators must achieve. Don't be fooled by sales talk saying you must installv aluminium rads. 500w output from a steel rad is the same as 500w output from an aluminium rad at a given delta T. The only difference will be in the size of the two and is not as much as people think.

So could existing radiators be kept?

quentingargan

Gael23 wrote: »

So could existing radiators be kept?

Again, you would need a room by room assessment, but you may find larger double radiators can be moved to replace smaller singles, leaving you to replace a smaller number

Gael23

Who would do this heat loss assessment?

Biker1

Gael23 wrote: »

Who would do this heat loss assessment?

Some heating suppliers can do it but only if they have the correct information in terms of u-values, room areas and volumes.
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