Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

boiler to heat pump conversion, data

hot_rod
hot_rod Member Posts: 18,195
is starting to flow in from actual installs. As expected low temperature heat emitters are critical.

Another point from following 3 installations is the actual SWT is lower than the load calcs and designs indicate.
As many suspect the fudge factor in those programs and calculations may have us over sizing and supplying warmer SWT then actually required. Even better for HP performance.


https://www.greenbuildingadvisor.com/article/air-to-water-heat-pump-retrofit

Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream