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Ceiling-Ducted vs Wall-Mounted All-in-One Heat Pumps: Which Fits Your Building?

Both have no outdoor unit. One serves a room, the other serves a suite and brings in fresh air. How to pick between wall-mounted and ceiling-ducted all-in-one heat pumps for apartments.

ERV or All-in-One Heat Pump ERV: How to Choose

An ERV ventilates only; an all-in-one heat pump ERV also heats and cools from one indoor cabinet. Five checks that decide which one a project needs: outdoor unit space, winter design temperature, e...

Cold-Climate Heating Check for All-in-One Heat Pumps: What to Verify at Your Design Temperature

How to check an all-in-one heat pump at your winter design temperature: read the 17°F and 5°F ratings, add the electric heat by the staging table, compare the total to the suite load, and size the ...

Sizing Ductwork for a Ceiling-Ducted All-in-One Heat Pump: Will the Far Bedroom Get Enough Air?

Will the far bedroom get enough air? How to size ductwork for a ceiling-ducted all-in-one heat pump: read the fan curve, add up the longest run, pick the supply connection, do the outdoor ducts sep...

All-in-One Heat Pumps with No Outdoor Unit for Apartments: How to Choose (2026)

How to choose a packaged heat pump with no outdoor unit for multifamily — written in specifications as a PTHP with integrated ERV: wall-mounted vs ducted, built-in ERV or not, cold-climate capacity...