The person you’re replying to was specifically talking about a house rather than an apartment.

However, heat pump systems do exist in apartment buildings. The high rise I live in has them (the condensers are up on the roof) and I definitely prefer it to PTACs, but this type of setup seems to be rare in JC.

In Asia, lots of high rise apartments have heat pumps, but they typically just mount the condenser units on the facade of the building, which is not aesthetically pleasing but way cheaper to install than how we typically do it in this country.