New AC Installation

two men standing next to each other with their arms crossed

Energy-Efficient AC Installation for Great Falls Homes

When Montana summer heats up, you need more than just a fan in the window. At Northern Heating & Cooling, we deliver expert AC installation in Great Falls that’s tailored to your space, your budget, and your long-term comfort. Whether you’re upgrading an aging system or outfitting a new home, our team ensures a smooth, reliable process from first estimate to final cool-down.



We install all types of air conditioning systems, from high-efficiency central AC units to space-saving ductless mini-splits. And we do it right—every time.

Reliable AC Replacement Done Right the First Time

A new air conditioner is a big investment—but with the right team, it’s one you won’t regret. Our experienced techs will assess your home’s size, layout, and insulation to recommend a properly sized unit that keeps you cool without overworking. We’ll also remove and dispose of your old equipment and handle all local code requirements.



Serving Great Falls, Black Eagle, Malmstrom AFB, and communities across Cascade County, we’ve helped thousands of Montana homeowners enjoy cooler summers while cutting down on utility bills.


Ask about high-SEER units for better efficiency and long-term savings, or explore a ductless installation for added flexibility in older homes or room additions.

When to Replace Instead of Repair

Sometimes a simple repair does the trick. Other times, a new system is the smarter choice. If your AC is:

Over 15 years old

Using outdated R-22 refrigerant

Breaking down repeatedly

Causing high energy bills

Struggling to cool your home evenly

…it might be time to consider a full replacement. Visit our AC Repair page if you’re still unsure—our team is happy to evaluate and guide you in the right direction.

Choosing the Right Cooling System for Your Home

Not all air conditioners are created equal. We’ll walk you through the best options for your space and lifestyle:

Central Air Conditioners

Whole-home cooling with even airflow and maximum comfort.

Ductless Mini-Splits

Ideal for homes without ductwork or for zoning specific rooms.

Heat Pumps (if offered)

Dual heating and cooling in one efficient system.

High-Efficiency AC Units

 Cut energy bills with SEER ratings of 16+ and advanced cooling technology.

Considering an alternative solution? We also install Geothermal HVAC Systems for eco-conscious homeowners looking for long-term efficiency.

Our Installation Process: No Stress, Just Cool Comfort

Here’s what to expect when you schedule a new AC install with Northern:

We’re EPA-certified to handle refrigerants and always prioritize your safety, comfort, and budget.

In-home evaluation

We assess your needs, perform load calculations, and explain your options.

Free estimate 

You’ll receive a clear, detailed quote with no surprise costs.

Professional installation

Our licensed team installs your new system, tests it thoroughly, and cleans up after ourselves.

Warranty & follow-up

We back our labor and include any available manufacturer warranty. We also recommend AC Maintenance to keep your new system in top shape.

New Air Conditioner FAQs

  • How much does a new AC cost in Great Falls?

    Installations typically range from $4,000 to $10,000 depending on size, system type, and efficiency rating. We provide free estimates upfront.

  • How long does AC installation take?

    Most installs are completed in a single day. More complex ductwork or zoning setups may require a bit more time.

  • Do you offer ductless AC installations?

    Yes. Visit our Ductless Mini-Splits page to explore efficient cooling without the need for ducts.

  • Should I replace my thermostat too?

    Absolutely. We recommend pairing your new system with a Smart Thermostat to maximize control and efficiency.

Upgrade Your Comfort—Book a Free AC Estimate Today

Don’t sweat another summer with an outdated or inefficient air conditioner. Call Northern Heating & Cooling for professional air conditioning installation in Great Falls and enjoy dependable cooling for years to come.



Schedule your estimate or learn more about our full Cooling Services. We also serve residential, light commercial, and property management clients across the Great Falls area.