Mini Split Installation in Hardin, MT
A new system here will heat from September through June and cool from July through August every year. Tell us about the house, and a licensed contractor who covers Big Horn County will get in touch.
Tell us about the job
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Hardin needs a mini-split that can run nearly all year
Homes here need heat from September through June, then cooling in July and August. That is ten months on the heat pump side and two on cooling, with almost no month off. Winter nights average 14°F, cold enough that a mini-split has to keep pulling heat from the outdoor air long after the compressor would idle in a milder place.
Any mini-split installed new has to meet the federal minimum for a split-system heat pump, 14.3 SEER2 for cooling and 7.5 HSPF2 for heating. With Big Horn County averaging 84 winter storms and 91 damaging wind events over the past ten years, and 18% of Montana households losing power for at least a day in 2024, it's worth asking an installer how the unit you're getting handles a restart after an outage.
- 10 months
- September through June, your system heats
- 2 months
- July through August, it cools
- 14°F
- the average winter night it heats against
- 82°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Montana requires HVAC contractors to hold a state license.
The license comes from the Department of Labor and Industry, and it covers the contractor, not the job itself. Montana sets one exception. Work under $2,500 does not need a licensed contractor. A mini-split installation is the kind of job the license requirement is meant to cover.
The license is what stands behind who does this work in Montana. Most cities and counties also require a permit for this kind of installation, along with an inspection once the work is done. The permit and inspection are what check the installation itself. The license is what stands behind the contractor doing it.
Source: Montana Legislature
- Is a mini split worth it?
- It depends on what you're heating or cooling and what you have now. A mini split puts heat right where you need it without ducts, and it works as both a heater and an air conditioner in one unit. With winter lows here averaging 14°F, look for a cold-climate model rated to keep producing heat at that temperature, since not every heat pump holds up down there. A contractor can look at your home and tell you whether it makes sense as your main heat source or as a supplement to what you already have.
- How many rooms can a mini split cover?
- A single outdoor unit can run one indoor head or several, depending on the system. Single-zone systems heat and cool one room or open area. Multi-zone systems connect one outdoor unit to multiple indoor heads, each with its own thermostat, so you can cover several rooms and control them separately. How many zones a given outdoor unit supports varies by model, so a contractor will size it to the rooms you want covered.
- Can a mini split heat a whole house?
- Yes, if it's sized and placed to reach every room. A multi-zone system with enough indoor heads can heat a whole house, with each zone covering a specific room or area. Homes here need heat from September through June, so whichever system goes in has to keep up with lows around 14°F on the coldest nights. A contractor can work out how many zones your house needs and whether a mini split should be the only heat source or work alongside something else.