Air Conditioning Installation

  • Serving Western Montana & Missoula Since 1985
  • Proud To Recommend Lennox & Other Top Brands
  • Trusted Local Pros for Fast, Clean Replacements

Local Professionals Installing All Types of Air Conditioning Systems

At Garden City Plumbing & Heating, we install air conditioning systems that are properly sized, energy-efficient, and ready for Montana’s climate. We help you choose a system that fits your home and budget—never more than you really need. If your old unit has stopped working or you’re ready for better comfort and lower energy bills, you can count on our team for honest advice and a clean installation. Since 1985, we’ve matched the right AC systems to Western Montana homes, using real details like square footage, ductwork, elevation, and local weather. With us, you get clear answers and fair pricing—no upselling, no surprises.

What We Install

We work with leading manufacturers to deliver systems that perform in Montana’s climate. Cooling systems we install include:

Central air conditioning units

Ducted split systems

Ductless mini-split AC systems

Air source heat pumps (cooling and heating)

Smart thermostat integration

Multi-zone and whole-home solutions

We’ll guide you through SEER ratings, available rebates, and what actually matters when choosing a system—not just what looks good on a spec sheet.

AC Installation or AC Replacement?

Replacing your system isn’t just about swapping boxes. It’s about improving comfort, efficiency, and long-term reliability. We install new AC systems for:

  • First-time installs in homes without central air
  • Replacing older systems that no longer cool reliably
  • Upgrading to high-efficiency units to lower utility bills
  • Replacing undersized or improperly installed units

Every install starts with a consultation. We inspect your space, evaluate your existing system (if there is one), and explain your best options based on performance, energy usage, and budget. We handle permits, removal of the old system, and complete system testing. You’ll know exactly what you’re getting and what to expect.

Call us right now at (406) 481-3548 or schedule online and we’ll be there as soon as we can!

AC Systems We Install

Ductless Mini Split Systems

Want to add comfort to room additions, garages, she-sheds, and other locations where costly ductwork doesn’t make sense? Ductless mini-split systems not only give you an easy way to bring year-round comfort to these locations, but also help you lower your monthly energy bills!

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Air Conditioner Installation

Our team works on all brands of heating and cooling equipment, so we know the names that are most reliable and offer the greatest value. It’s why we install the most-trusted brands like Lennox heating and cooling equipment, so you get reliable comfort and better value for your investment.

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Indoor Air Quality Solutions

The EPA says the average American spends 90 percent of their time indoors. Did you know that concentrations of many pollutants are 2 to 5 times higher in your home than outdoors? Breathe easier and protect your family with indoor air quality solutions from Garden City Plumbing and Heating.

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HVAC Zone Controls

Are parts of your home never warm or cool enough? Are family members constantly fighting over the thermostat? Today’s home zoning systems can deliver different temperatures to different parts of your home, so everyone has the comfort they desire.

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Signs It’s Time to Replace Your Air Conditioner

Not sure if it’s time to replace? Here are the most common signs we see that signal it’s time to upgrade:

Age of Your AC Unit

Most air conditioners last around 12 to 15 years. If yours is older, it’s likely operating less efficiently and more prone to breakdowns.

Inconsistent Cooling

If your home has hot and cold spots, or the system struggles to keep up during high temperatures, it may no longer be performing as it should.

Rising Energy Bills

An older or failing system often uses more energy to produce less cooling. If your bills are climbing with no clear cause, your AC could be to blame.

Frequent or Costly Repairs

Needing repairs every season—or paying for big fixes—is a strong sign that replacement may be more cost-effective than continuing patchwork.

Outdated Refrigerant

Systems still using R-22 refrigerant are harder to service and more expensive to maintain. Modern units use safer, more efficient refrigerants.

If you’re on the fence, we’ll give you honest feedback on whether your current unit can be repaired or if a replacement will save you more in the long run.

Why Homeowners in Missoula Trust Garden City

We’re not a big-box installer that disappears after the job. We’re a family-owned company that’s been serving Western Montana since 1985. When we install a system, we back it up—with clean work, correct sizing, and local service that’s easy to reach.

What sets us apart:

  • Licensed, experienced installers—not subcontractors
  • Transparent pricing with no last-minute fees
  • Local knowledge of building types and cooling needs
  • Trusted for both residential and light commercial installs
  • A reputation built on long-term relationships, not short-term sales

Post-Installation Support & Maintenance

After installation, we don’t disappear. We offer ongoing AC maintenance services to keep your new system running like it should. That includes seasonal tune-ups, system performance checks, and filter changes. You also get peace of mind knowing we’re nearby and available if anything ever goes wrong.

Schedule Your AC Installation Today

If your current system is failing—or you’re building a home that needs cooling—we’re ready to help. Call Garden City Plumbing & Heating at (406) 481-3548 or schedule online. We’ll help you choose the right system, install it properly, and make sure your home stays comfortable for years to come.