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Mini Splits for Sheds & Backyard Rooms

A small ductless mini split is the easiest way to heat and cool a shed, she shed, sunroom, tiny house or backyard cabin. One wall-mount indoor unit and a small outdoor condenser give you year-round comfort with no ductwork.

What size mini split for a shed or backyard room?

Room size Example Typical size
Up to 200 sq ft 8x12, 10x12, 12x16 shed 6,000–9,000 BTU
200–400 sq ft 12x20, 12x24, 16x20 studio 9,000 BTU
400–600 sq ft Small cabin or sunroom 12,000 BTU
600–1,000 sq ft Large cabin or guest house 18,000 BTU

These ranges assume an insulated building. Size up for thin walls, lots of glass (sunrooms and glass garden rooms) or very hot or cold climates. Two or three separate rooms? A multi zone mini split runs a separate indoor unit in each room from one outdoor condenser.

115V or 230V?

Some smaller systems plug into standard 115V power and are a good fit where only a basic circuit runs to the building. See our 110V mini splits. Larger systems need a dedicated 208/230V circuit.

Frequently asked questions

Does my shed need to be insulated?

Insulation makes a big difference. A mini split in an uninsulated shed works much harder and costs more to run. Insulating the walls, roof and floor lets you use a smaller, cheaper system.

Will a mini split heat a shed in winter?

Yes. These are heat pumps, so they heat as well as cool. For cold regions, look at our cold climate mini splits, which heat at -13°F or colder.

Can I install it myself?

Mini split installation involves refrigerant connections and electrical wiring, so plan on a licensed HVAC technician, and check whether your area needs a permit. You'll also need a line set long enough to reach from the indoor unit to the condenser.

Can I add a mini split to a Freedom Room structure?

Yes. Many of our customers add one to a shed, she shed, cabin or outdoor Freedom Room. Call us at 512-777-0154 and we'll help you size the system for your building.