
Stay cool through Montana's warmest months.
Air conditioning repair, installation, and maintenance for the Flathead Valley and Gallatin Valley. NATE-certified team. Flat-rate pricing.

Montana summers are getting warmer. When July temperatures push past 90 in the Flathead and Gallatin valleys, a working air conditioner is the difference between a comfortable home and a miserable one.
Western Sky handles AC repair, new system installation, and seasonal maintenance across both valleys. Central air, ductless mini-splits, and heat pump cooling. Our NATE-certified team will help you find the right system for your home and your budget, with flat-rate pricing on every job.
If your AC is struggling to keep up, making strange noises, or running constantly without cooling your home, give us a call. We'll diagnose the problem and tell you what it will cost before we start work.
What We Fix and Install
Our cooling services include central air conditioning repair and replacement, ductless mini-split systems, heat pump cooling, thermostat upgrades and smart controls, and seasonal AC tune-ups and inspections.
We size every system to your home's square footage, insulation, and layout. A system that's too small won't keep up on hot days. A system that's too large cycles too often and drives up your energy bills. We get it right.
Why Western Sky
Our Columbia Falls shop on Highway 40 serves the Flathead Valley. Our Bozeman team covers the Gallatin Valley. Both crews are NATE-certified and factory-authorized to service Ruud and other major brands.
We show up when we say we will, explain your options in plain English, and give you flat-rate pricing before we start. Your cooling system is too important to leave to guesswork.
Ready to Schedule?
Don't wait until the first heat wave to find out your AC needs work. Call or schedule online. Columbia Falls: (406) 296-3336. Bozeman: (406) 229-8080.
What we offer
Frequently asked questions
How do I know if my AC needs repair or replacement?
If your AC is blowing warm air, cycling on and off frequently, or your energy bills have jumped, it's time for a service call. Our team will diagnose the issue and give you straightforward options. If a repair will keep it running reliably, we'll tell you. If replacement is the better investment, we'll explain why.
What size AC system do I need?
System size depends on your home's square footage, insulation, window exposure, and layout. We perform a load calculation to determine the right size. An oversized system wastes energy, and an undersized system can't keep up when temperatures climb.
What's the difference between central AC and a ductless mini-split?
Central AC uses your existing ductwork to cool your whole home. A ductless mini-split cools individual rooms or zones without ductwork, which makes it a good fit for additions, older homes, or spaces where running ducts isn't practical. Our team can help you decide which option makes sense for your situation.
When should I schedule an AC tune-up?
Spring is the best time, before summer heat arrives. A tune-up checks refrigerant levels, cleans coils, tests controls, and catches small problems before they become breakdowns during peak cooling season.
Ready to schedule?
Call your local team or send us a message.