Gas-Fired Heat Systems
in Duluth, MN
Gas-fired heating systems remain the backbone of home and commercial comfort in the Duluth area. Whether your property relies on a gas boiler, gas-fired unit heater, radiant heating system, or gas-fired make-up air unit, Northern Sun Plumbing & Heating has the training and experience to install, repair, and maintain it. We work with both natural gas and propane systems, and our technicians are factory-trained on Rheem/Ruud equipment with hands-on experience across all major brands. Gas-fired heating covers a broader range of equipment than just furnaces. Boiler systems use hot water or steam to distribute heat through radiators, baseboard units, or in-floor radiant tubing — a popular choice in older Duluth homes and new construction alike. Gas-fired unit heaters are commonly used in garages, workshops, and commercial spaces where ductwork is impractical. Radiant heating systems embedded in floors provide even, comfortable warmth without blowing air, reducing dust circulation and creating a quieter living environment. We handle everything from gas piping installation and leak detection to full system replacements and annual maintenance. Gas safety is paramount in everything we do — our licensed technicians follow all codes and manufacturer specifications, test every connection, and verify safe operation before we leave. If you smell gas or suspect a leak, call us immediately at (218) 491-3203.
Why Choose Us
Gas Boiler Service
We install, repair, and maintain gas-fired hot water and steam boilers for residential and commercial properties, including hydronic baseboard and radiator systems.
Radiant Floor Heating
In-floor radiant heating provides even, comfortable warmth throughout your home. We install and service gas-fired boiler systems that power radiant floor networks.
Gas Unit Heaters
Garage heaters, shop heaters, and commercial unit heaters — we install and service gas-fired unit heaters for spaces where ductwork is not practical.
Gas Piping & Safety
We install, repair, and test natural gas and propane piping with the safety certifications and expertise this critical work demands.
What Sets Us Apart
Licensed Professionals
Every technician holds current Minnesota licenses and carries full insurance coverage.
15+ Years Experience
Backed by over 15 years of hands-on experience in Northern Minnesota's demanding climate.
Upfront Pricing
Clear, written estimates before work begins. No hidden fees or surprise charges.
24/7 Emergency Service
Plumbing and heating emergencies don't wait for business hours, and neither do we.
How It Works
System Evaluation
We inspect your gas-fired heating equipment, check gas piping and connections, and evaluate your heating needs and any safety concerns.
Recommendation
You receive a clear recommendation with repair or replacement options, transparent pricing, and an explanation of what each option means for your comfort and safety.
Service or Installation
Our licensed technicians complete the work following all codes and manufacturer specifications, with careful attention to gas safety at every step.
Safety Testing
We test all gas connections, verify proper combustion and venting, check carbon monoxide levels, and ensure the system operates safely and efficiently.
Benefits of Working With Us
Trusted by Duluth homeowners for reliable service, honest pricing, and work that lasts.
Same-Day Scheduling
We understand your time matters. Most non-emergency calls can be scheduled for same-day or next-day service.
Clean Job Sites
We treat your home with respect. Drop cloths, shoe covers, and thorough cleanup are standard on every visit.
Warranty on All Work
Every repair and installation comes with a workmanship warranty so you can have confidence in the job.
Local Knowledge
We know Duluth's unique challenges — from frozen pipes to aging infrastructure — and we build solutions that last.
Frequently Asked Questions
What types of gas-fired heating systems do you service?
We service gas furnaces, gas boilers (hot water and steam), gas-fired unit heaters, radiant floor heating systems powered by gas boilers, gas-fired make-up air units, and garage or shop heaters. We work on both natural gas and propane equipment from all major manufacturers.
What is the difference between a boiler and a furnace?
A furnace heats air and distributes it through ductwork. A boiler heats water and distributes it through pipes to radiators, baseboard units, or in-floor radiant tubing. Boilers tend to provide more even heat and do not blow air, which some homeowners prefer. Both can be powered by natural gas or propane.
Is radiant floor heating worth the investment?
Many homeowners consider radiant floor heating the most comfortable form of heat available. It provides even warmth from the floor up, eliminates cold spots, and operates silently with no blowing air. It is most cost-effective when installed during new construction or major remodeling, as retrofitting can be more complex.
How do I know if I have a gas leak?
Signs of a gas leak include the smell of rotten eggs (the odorant added to natural gas), a hissing sound near gas lines or appliances, dead vegetation near outdoor gas lines, or a higher-than-expected gas bill. If you suspect a gas leak, leave the building immediately, do not operate any switches or electronics, and call your gas company or 911. Then call us at (218) 491-3203 for repairs.
How often should gas heating equipment be serviced?
We recommend annual service for all gas-fired heating equipment, ideally before the heating season begins in early fall. Annual maintenance includes checking gas connections, cleaning burners, verifying proper combustion and venting, testing safety controls, and ensuring efficient operation. This is especially important in Duluth where heating equipment runs hard for six months or more.
Related Services
Need Gas-Fired Heat Systems?
Our experienced team is ready to help. Call us today or book a free estimate online.