Air Conditioning Install & Replace

Honest Recommendations. Clean Installs. No Surprises.

At Garden City Plumbing & Heating, we install and replace all types of air conditioning systems—properly sized, energy-efficient, and built to perform in Montana’s climate. Whether you’re replacing an aging unit or installing AC for the first time, we’ll help you choose the right system for your home and budget—never more than you actually need. We also offer flexible financing options to make the investment more manageable. Get straightforward recommendations, clean installation, and clear, upfront pricing—no upselling, no surprises.

We work with trusted manufacturers to deliver reliable, long-lasting systems, whether you’re replacing a failed unit or upgrading for better comfort and lower energy costs. Since 1985, we’ve matched the right AC systems to Western Montana homes by factoring in real details like square footage, ductwork, elevation, and local weather conditions. 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.

What Kind of AC Replacement Do You Need?

Not every replacement looks the same. The right approach — and the benefit you get — depends on your situation.

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:

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.

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.

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FAQs

How do I know if I need AC replacement or just a repair? If your system is over 10–15 years old, has needed multiple repairs in recent years, struggles to keep up on hot days, or has caused your energy bills to climb, replacement is often the smarter long-term investment. A common rule of thumb: if a repair costs more than half the price of a new unit, it’s usually time to replace. We’ll inspect your system and give you an honest recommendation with no pressure either way.

What are the signs I need a new AC unit? Common signs it’s time to replace your AC include: the system is 10–15 years old, it cycles on and off frequently, certain rooms never cool down, it’s making unusual noises like banging or grinding, refrigerant leaks keep recurring, or your energy bills have increased without explanation. If you’re seeing one or more of these, a replacement evaluation makes sense.

How long do air conditioners typically last? Most central air conditioning systems last 10–15 years with regular maintenance. Heat pumps typically run 8–12 years. If your system is approaching or past that range and running into problems, replacement is often more cost-effective than continued repairs—especially as older units lose efficiency and parts become harder to source.

Is it worth repairing an older AC unit? It depends on the age of the system, the cost of the repair, and how efficiently the unit has been running. As a general guideline, if your system is over 10 years old and a repair costs more than $1,500–$2,000, replacement often makes more financial sense—especially when you factor in improved energy efficiency and fewer future service calls. We’ll help you weigh the numbers honestly.

How much does AC replacement cost in Missoula? Most AC replacements in the Missoula area range from $6,000 to $15,000+, depending on your home’s size, the system type, efficiency rating, and whether ductwork or electrical upgrades are needed. We provide upfront, itemized pricing before any work begins and offer flexible financing to make the investment more manageable.

What types of air conditioning systems do you install? We install central air conditioners, heat pumps, and ductless mini-split systems. The right fit depends on your home’s layout, existing ductwork, and how it performs during Missoula’s summer heat. We’ll walk you through the options and help you choose what makes the most sense for your home and budget.

How long does AC installation or replacement take? Most installations and full system replacements are completed in one day. Jobs involving ductwork modifications, electrical upgrades, or larger homes may take an additional day. We’ll give you a clear timeline upfront so you’re not left without cooling any longer than necessary.

What size air conditioner does my home need? System sizing depends on your home’s square footage, insulation, ceiling height, window placement, and sun exposure. We perform proper load calculations to make sure your new system is correctly sized—an oversized or undersized unit will cost you more in energy and repairs over time.

Do you offer emergency air conditioning service? Yes. We provide emergency AC repair and same-day service throughout Missoula and surrounding Western Montana communities, especially during peak summer heat when going without cooling isn’t an option.

Why is my AC running but not cooling my home? This is one of the most common complaints we hear. Causes include low refrigerant, dirty evaporator or condenser coils, a clogged air filter, blocked airflow, or a failing compressor. If your system is running but not cooling effectively, don’t ignore it—continued operation in this state can accelerate damage and lead to a more costly repair or early replacement.

Do you service all air conditioner brands? Yes. Our technicians are trained to work on most major brands and system types, including older units and high-efficiency models. Whether you need repairs on an existing system or are ready to discuss replacement options, we can help.

How often should my AC be serviced? We recommend annual maintenance, ideally in the spring before the cooling season begins. Regular tune-ups improve efficiency, catch small problems before they become expensive ones, and extend the life of your system. Skipping maintenance is one of the most common reasons systems fail ahead of schedule.

Can wildfire smoke affect my air conditioning system? Yes, and this is especially relevant in Western Montana. Smoke and poor air quality can clog filters quickly, restrict airflow, and put added strain on your system. During smoke season, more frequent filter changes and upgrading to higher-rated filtration can help protect both your equipment and your indoor air quality.

Do you offer financing for AC installation or replacement? Yes. We offer flexible financing options for qualifying homeowners, making it easier to move forward with a new system without putting it off. Ask us about current financing terms when you schedule your estimate.

What areas around Missoula do you serve? We serve Missoula and surrounding communities including Frenchtown, Lolo, Bonner, Clinton, Florence, Stevensville, and Polson. Our team provides fast response times across Western Montana for both scheduled installations and emergency service calls.