Mini Split Installation in Twin Falls, ID
A new system here will heat from September through May and cool from July through August every year. Tell us about the house, and a licensed contractor who covers Twin Falls County will get in touch.
Tell us about the job
It takes about a minute.
Nine months of heat, two of cooling
Twin Falls asks a mini-split to run heat from September through May, with winter nights averaging 21°F in December through January and February. Then summer afternoons average 83°F in July and August. That is 11 months where the system is doing one job or the other, and heat is most of it.
A unit built on or after January 1, 2023 has to meet 7.5 HSPF2 for heating and 14.3 SEER2 for cooling, the same federal minimum as any split-system heat pump. Since your mini-split will spend most of its year on the heating side, it is worth knowing how it performs there, not just at the minimum required.
- 9 months
- September through May, your system heats
- 2 months
- July through August, it cools
- 21°F
- the average winter night it heats against
- 83°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Idaho requires HVAC contractors to hold a state license.
The license is held by the contractor, not tied to this one job. The Idaho HVAC Board is the one that tested and licensed them, and that license is what stands behind the work before anyone touches your mini-split.
Most cities and counties in Idaho also require a permit for a job like this, with an inspection once the installation is done. That inspection is separate from the state license. It's what confirms the mini-split was put in correctly in your home.
Sources: Idaho Legislature · Idaho Division of Occupational and Professional Licenses
- Is a mini split worth it?
- For most homes here, yes, especially if you're heating with something inefficient or trying to cool a room your ducts don't reach well. Winters here run cold, down to 21°F on average overnight from December through February, and a mini split with a heat pump is built to provide heat in that kind of cold. It also covers your two months of summer heat in the same unit, so you're not running separate systems for July and August. A contractor can look at your house and tell you whether it makes sense as your main heat source or as backup for the rooms that need it most.
- How many rooms can a mini split cover?
- A single outdoor unit can run one indoor head or several, depending on the system. Multi-zone systems let one outdoor unit power several indoor heads, each one controlling its own room or area. The more zones you add, the more the outdoor unit has to be sized to keep up with all of them running at once. A contractor will size the system to your house, room by room, rather than guessing at a number that fits every home.
- Can a mini split heat a whole house?
- Yes, if it's sized and placed for that job. A multi-zone mini split with enough indoor heads can heat an entire house, and a heat pump handles both heating and cooling in the same system, which matters here since homes need heat from September through May. Whether one system can cover your whole house depends on the layout, how many rooms need their own head, and how the house holds heat. A contractor will walk through the house and size it to what you actually need.