Loveland Choice Award 2026 Winner
Best AC/Heating Service
Best Tankless Water Heater Dealer
2 Year Labor Warranty
Covers workmanship on qualifying services
Waived Diagnostic Fee
When you move forward with repair

Cold mornings in Fort Collins put your heating system to work for months at a time. When the temperature drops, you want your furnace, heat pump, or other heating equipment to respond when the thermostat calls for heat and keep every part of your property comfortable. Northern Air provides heating services in Fort Collins, CO, backed by technicians who understand the demands Colorado winters place on HVAC equipment.

Need help with your heater before the next cold spell? Schedule heating service with Northern Air for your home or business.

Lennox furnace and two water heaters installed in a residential utility room.

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Heating Services for Your Home or Business

Every heating system has different service requirements based on its design, age, fuel or energy source, and condition. Northern Air works with residential and commercial heating equipment in Fort Collins, diagnosing existing systems and helping customers plan for maintenance or replacement when needed.

Our technicians evaluate the equipment before recommending work. That means looking beyond the immediate symptom to determine whether controls, airflow, electrical components, mechanical parts, or other conditions are affecting system operation.

Heating Repair

When your heater stops working correctly, Northern Air’s heating repair technicians diagnose the cause before recommending a solution. We address heating failures, unusual operation, insufficient heat, cycling problems, and other equipment concerns.

Northern Air also has a 24/7 answering service for urgent residential and commercial HVAC problems. If a heating failure occurs outside normal business hours, customers have a way to reach our team and request assistance.

Heating Installation

A new heating system needs to fit the property rather than simply replace the old equipment with a similar unit. Our heating installation process considers the building’s heating requirements, existing HVAC configuration, equipment options, and comfort needs.

As a Lennox Premier Dealer, Northern Air can provide Lennox heating equipment while working with systems from other major manufacturers. We can also discuss efficiency, controls, and equipment features so you understand the differences between available options.

Heating Maintenance

Routine heating service gives a technician an opportunity to inspect the system before or during periods of frequent use. Depending on the equipment, service may involve inspecting electrical connections, controls, airflow, heating components, filters, and other parts that affect operation.

Customers who prefer recurring HVAC care can also use Northern Air’s Planned Maintenance Program to stay on top of scheduled system maintenance.

Heating Systems We Service

Fort Collins properties use several types of heating equipment, and each system requires a different approach to diagnostics and service. Northern Air works with heating systems in homes and commercial properties, helping customers maintain existing equipment and evaluate new options when their heating needs change.

  • Furnaces. We service forced-air furnaces and diagnose problems affecting heat production, airflow, controls, and system operation.

  • Heat pumps. Northern Air provides heat pump services for equipment that handles both heating and cooling.

  • Boilers. Our boiler services cover hydronic heating equipment used to circulate heated water through a property.

  • Ductless systems. Northern Air services ductless heat pump systems that provide zoned heating without conventional ductwork.

We don’t just talk about quality—we show it

Our team adheres to recommended service procedures that optimize safety, efficiency, and performance. Explore our gallery to see the difference expertise makes.

Why Choose Northern Air for Heating Services?

A heating service company needs to understand both the equipment and the conditions it operates under. Northern Air brings long-term technician experience and established HVAC resources to heating work throughout Fort Collins.

  • 14-year average technician tenure. Our technicians average 14 years with Northern Air, giving the team extensive experience with heating diagnostics, maintenance, and installation.

  • NATE-certified technicians. Training and certification support accurate work across modern heating and HVAC equipment.

  • Lennox Premier Dealer. Northern Air meets Lennox requirements for training and dealer participation while continuing to service other major equipment brands.

  • 24/7 answering service. Customers can contact our answering service around the clock when an urgent residential or commercial heating problem occurs.

  • Financing options. Northern Air offers HVAC financing for qualifying projects when heating replacement or other larger work is needed.

Get Your Heating System Ready for Fort Collins Weather

You should not have to wait for a no-heat situation to find out something is wrong with your heater. Northern Air can diagnose current problems, maintain your existing equipment, or help you select a new system when replacement makes sense.

Schedule heating services with Northern Air in Fort Collins, CO, and give your heating system the attention it needs before the next temperature drop.

$99.95

Furnace Tune-Up
Subject to change without notice. New Customers Only. Must mention at time of booking
Expires: Oct 31, 2026

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Our reviews

What Homeowners Are Saying About Us

Review Highlights
Customers consistently praise the team's professionalism, friendliness, and expertise in maintaining and repairing HVAC systems, with many highlighting how knowledgeable and thorough technicians like Matt, Anthony, and others are in diagnosing problems and explaining the work being done. Long-term customers especially appreciate the reliability and trustworthiness of the service, noting prompt response times, meticulous attention to detail—including cleaning up after themselves—and willingness to go above and beyond by offering maintenance tips and addressing issues beyond the immediate repair. The combination of quality workmanship, honest pricing, excellent communication, and the genuine care shown to customers has earned strong loyalty, with many families recommending the services to friends and choosing to stay with the company for years.

Based on 449+ Reviews

JJ and Scott were professional, personable and efficient. The system works great and the house was cleaner when they left than when they arrived. I can't say enough about Northern Air.
Dave Hawkins
1 day ago
Ronny was friendly and quick! I appreciate his work and time. Thank you Ronny.
Courtney Carter
1 day ago
Northern air is the best HVAC company around! It's hard to find an honest and reliable company. They have always been so responsive along with transparent and honest about their prices. I am so happy to have such a great company taking care of my HVAC system.
Kirstin Simons
2 days ago
Matt W has been servicing our equipment for several years. He is very friendly and knowledgeable. He always asks about our lives, health, etc. a great guy.. We always ask for him.
Joe Smith
3 days ago
Benjamin did ALL inspections and cleaning; he is skilled, experienced, answered all questions.
R Reid
3 days ago
Professional, friendly and knowledgeable technician.
mike pendergast
4 days ago
Anthony went above and beyond in routine maintenance, identifying related issues with our fireplace glass which had melted insulation. He put up a sign to not use the fireplace, which was a big help. Thank you!
Patricia Stutz-Tanenbaum
5 days ago
Matt from northern colorado air is one of the best AC techs I have ever met, he knows the systems like the back of his hand..very professional and a nice guy!!!
Michael Loukonen
5 days ago
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    Keep your home comfortable year-round with Northern Air

    From routine maintenance to unexpected repairs and complete system replacements, Northern Air is here to keep your home comfortable through every season. Count on our experienced local team for dependable HVAC service in Fort Collins.