As Heat Pumps Go Mainstream, a Big Question: Can They Handle Real Cold?

The system degrades to be a resistance heater as temperatures drop. Ground-source heat pumps are useful in environments where extreme cold is a risk.

However, in the systems I’ve deployed, I learned first-hand why every business that depends on refrigeration units has their refrigeration tech on speed dial #1 on their phone…

TL;DR: don’t fall for the current heat-pump propaganda.

Maybe just read the manufacturers recommended operating condition label?