Commercial HVAC Services

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Commercial HVAC Services in Great Falls, MT | Small Business Heating & Cooling

Your Business, Our HVAC Expertise

When the heat rises or temperatures dip, your business shouldn’t have to slow down. At Northern Heating & Cooling, we specialize in commercial HVAC services in Great Falls built around your schedule, your equipment, and your customers. Whether you manage an office downtown, run a small shop near 10th Avenue South, or own a restaurant in Cascade County, we understand how critical heating and cooling are to your day-to-day operations. Our team responds quickly to service calls and provides expert solutions for light commercial systems—keeping your staff and customers comfortable year-round.

HVAC Solutions for Small Businesses

We work with a wide range of local businesses to deliver tailored HVAC solutions that meet specific operational needs. Our technicians are experienced with light commercial heating and cooling systems including rooftop units, gas furnaces, ducted systems, and ductless mini-splits. From single-unit stores to multi-tenant buildings, we offer:

  • Commercial AC repair and replacement
  • Commercial heating installation and service
  • Rooftop unit service and diagnostics
  • Smart thermostat and zoning system installation
  • Indoor air quality improvements for offices and retail
  • Maintenance agreements for ongoing performance

We proudly serve professional offices, retail spaces, restaurants, clinics, salons, and other small businesses across Great Falls and surrounding areas. Let us help you create a consistently comfortable environment your team and clients will appreciate.

Tenant Improvement & New Construction

If you're opening a new location or renovating a commercial space, we can design and install an HVAC system that fits your floorplan, usage needs, and local code requirements. We partner with general contractors and property owners on commercial HVAC for new build-outs, handling duct design, zoning layout, equipment sizing, and more. Whether you're retrofitting a historic downtown property or customizing a new office suite, we’ll make sure your system is energy-efficient and future-ready.

Full-system duct installs in older homes

Additions or basement finishes needing new duct runs

Replacing worn-out or crushed ducts with modern, sealed lines

Ductwork for HVAC retrofits or equipment replacements

Preventative Maintenance for Businesses

Avoid the hassle of unexpected HVAC breakdowns during business hours. Our preventative maintenance programs are tailored to your schedule and system type, ensuring peak performance without disruption. We’ll inspect, clean, and service your commercial units on a regular basis—many clients choose early morning or weekend slots to avoid interfering with customer flow. For businesses that rely heavily on consistent indoor climate, scheduled maintenance is one of the smartest investments you can make.



Learn more about HVAC maintenance strategies on our Maintenance Tips page, or contact us to build a service agreement that fits your business.

Commercial HVAC FAQs

  • Can you work on our office HVAC outside of normal hours?

    Yes—we offer flexible scheduling for commercial clients, including early mornings, evenings, or weekends.

  • Do you service rooftop AC units?

    Absolutely. Rooftop units are a common system type for many Great Falls businesses, and we handle everything from diagnostics to full replacements

  • What businesses do you typically serve?

    We specialize in light commercial HVAC for retail stores, restaurants, professional offices, small clinics, salons, and similar spaces.

  • Can you install HVAC in a new business location?

    Yes, we work on tenant improvement and new construction projects, including full HVAC system design and installation.

  • Do you offer service contracts for commercial clients?

    We do. Our commercial maintenance plans are customized to your system and hours of operation, ensuring worry-free performance all year.

For reliable, responsive HVAC for businesses in Great Falls, trust Northern Heating & Cooling. Get in touch today to request a quote or discuss your building’s HVAC needs.