How to spec my ASHP

[jpinthehouse]

Hi

Anyone any pointers on how to spec an ASHP and what  model are people using

Thanks

John

[ProDave]

You need to know the heat loss of your house. Either from your SAP assesment, or using for example the spreadsheed that @JSHarris has produced.

 

And how you are heating it (ufh or radiators)

 

This will tell you the size of unit needed.

 

As to make, there are a vairiery of makes that people have experience with, I am using an LG for instance.