3 ms·
For heat pumps more outdoor units is definitely more efficient, since the outdoor unit needs to be big enough to accommodate all connected indoor units at once,
by sgc 6y ago
For heat pumps more outdoor units is definitely more efficient, since the outdoor unit needs to be big enough to accommodate all connected indoor units at once, and will be on even if only one is in use. Two per unit is my go to trade off on that one, with an attempt to group together units that are more likely to be used at the same time (so no bedroom / living room split, try to stick with bedroom/bedroom and living room/dining room etc).
BTW they have low profile indoor units that can be embedded flush with the ceiling or wall, so the bulkiness indoors is not even required anymore.
- PaulDavisThe1st 6y agothose ceiling mount units ... not sized for typical US construction techniques, so installing them in an existing ceiling can be quite complex. If you're doing new construction, it is possible to correctly frame up the ceiling so that installing them becomes trivial.
- brendawalsh 6y agoThere are two kinds available currently for ceiling. The cassette, that would fit into a drop ceiling, and there is also a mini-ducted unit, installed in the ceiling with small-run ducted ports. My favorite are the ones that look like picture frames.