A mini-split is a small heat pump with a wall-mounted indoor unit connected to an outdoor unit by a 3-inch line set. No ductwork needed. It's the right answer for the finished attic that's 84°F in July, the addition the original furnace can't keep up with, or a three-season porch you'd like to use in October.
Current cold-climate mini-splits heat efficiently well below zero, so the same unit that cools the room in summer handles most of its heat in winter. One outdoor unit can run up to five indoor heads in different rooms.
We plan head placement so the airflow actually reaches where you sit, route the line set neatly on the outside of the house in a painted cover, and mount the outdoor unit on a stand above the snow line.
Signs you need this
- One room is always too hot or too cold
- You're finishing an attic, basement or addition
- You use window AC units every summer
- A room is heated with electric baseboard and costs a fortune
How it works
Room-by-room plan
We size each head for its room and choose where the lines will run.
Written quote
Single-zone or multi-zone options, with heating and cooling ratings.
Install
Wall-mount heads, line cover, snow stand and electrical. Most single-zone jobs take one day.
Common questions
Will it work at −25°F?
Cold-climate models keep heating at −13°F to −22°F depending on the model, at reduced output. For a room that must stay warm on the coldest nights, keep a backup like the existing baseboard.
How do I clean it?
Rinse the washable filters in the indoor head once a month during heavy use. We deep-clean the coil and blower wheel every year or two.
Is the wall unit ugly?
It's a white box about 32 inches wide. Ceiling cassettes and slim ducted units are options if you'd rather not see it; they cost more.