Fast, Reliable Heating & Furnace Across Commerce City
Heating and furnace repair in Commerce City typically costs $150-$700, with most tune-ups running $80-$200 and same-day service available when you call (866) 561-3358. We’re the team that answers at 2 a.m. when your furnace quits on a January night, and we’ve been doing this work since 2018.
Commerce City sits at roughly 5,200 feet on the High Plains, just northeast of Denver’s Front Range. That altitude matters for your furnace. Combustion efficiency drops up here, which means your system works harder and your technician needs to know what to check. We’ve worked in the older industrial-core neighborhoods near the Suncor refinery, in the 2000s-era tract homes up in ZIP 80022, and in master-planned communities like Reunion and Buffalo Mesa. Each area presents its own heating challenges, and we’ve seen them all. When you need Heating & Furnace service done right, we’re already familiar with your neighborhood’s equipment, ductwork, and the specific strain Commerce City’s climate puts on both.
Why Fireside Heating & Air Co. Is Commerce City’s Preferred Heating & Furnace Company
Homeowners in Commerce City call us because we show up when we say we will, quote a price we stand behind, and back every job with our 90-Day Done Right Promise in writing. No paperwork to file, no arguing. If it’s not right, we make it right.
We’ve served this region for over 8 years. Our technicians are background-checked, uniformed journeymen who put on shoe covers without being asked. They treat your home the way they would their own mother’s. And when you call (866) 561-3358, a live person answers - 24 hours a day, 7 days a week, including holidays. No voicemail tree, no callback tomorrow.
Our team is trained on nine major brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. We stock parts for fast turnaround on common failures, and most repairs are completed in a single visit. That’s not a slogan. It’s how we work.
We also understand something about Commerce City that out-of-town franchise techs often miss. This city sits directly downwind of the Suncor Energy oil refinery, one of the largest in the Rocky Mountain region. That means your furnace faces chronic particulate loading and petroleum-based VOC infiltration that homes in neighboring Thornton or Westminster simply do not experience. Local expertise here is not a luxury. It’s necessary.
Our Heating & Furnace Services in Commerce City
Furnace Repair in Commerce City
Furnace repair in Commerce City runs $150-$700 depending on the part and the hour. Common calls we see: failed ignitors from altitude-related thermal stress, gas valves gummed with refinery particulate, and rollout switches tripping from VOC-sensitive components in homes within two miles of Suncor. We recently serviced a 2010-built home in the Reunion neighborhood where the builder-grade furnace was short-cycling from a clogged 1-inch filter - loaded solid in just 38 days. We installed a 4-inch media cabinet, upgraded the thermostat to a Wi-Fi model, and tuned the burner for Commerce City’s altitude. The homeowner now gets email alerts when filters need changing.
Our repair pricing is upfront. The price quoted is the price paid. Full stop. And if your repair is over $250, we take $50 off.

Furnace Replacement in Commerce City
Replacement becomes the straight talk when repair costs approach half the value of a new system, or when your furnace is past 15 years and cracking heat exchangers. In Commerce City’s older industrial-core neighborhoods, original ductwork from the 1950s-1970s is often undersized for modern variable-speed furnaces. We measure static pressure before recommending equipment. Installing a high-efficiency unit on inadequate ductwork will crack your heat exchanger and void your warranty.
In newer communities like Buffalo Mesa, builder-grade furnaces from the 2000s-2010s are reaching first-replacement age. We size for both hard heating demand and summer cooling loads, because Commerce City’s Chinook-driven 50°F single-day temperature swings demand equipment that can handle both.

Furnace Tune-Up in Commerce City
Our $89 Seasonal Tune-Up is not a quick once-over. At Commerce City’s altitude, we verify heat-exchanger performance and CO production on every visit. We check burner orifices for altitude-specific derating, inspect ignitors for thermal fatigue, and measure temperature rise against manufacturer specs adjusted for 5,200 feet. For homes near the refinery, we inspect filter loading and discuss media upgrades. A standard 1-inch filter in this environment can load to near-restriction in 30-45 days, not 90. That is not an upsell. It is a genuine necessity here.
Seniors and veterans receive 5% off, always.

Heat Exchanger Inspection & Repair in Commerce City
Cracked heat exchangers are a safety issue we do not soft-pedal. In Commerce City, altitude-reduced combustion efficiency combined with refinery particulate creates conditions that accelerate heat-exchanger deterioration. Our technicians use visual inspection, combustion analysis, and CO measurement. If we find a crack, we show you, we explain your options, and we do not pressure. A failed heat exchanger in a newer furnace sometimes warrants full replacement. In an older system, it usually does. We’ll give you straight talk about repair versus replace, and the price quoted is the price paid.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Commerce City
We carry parts and factory training for Carrier, Trane, Lennox, Bryant, and American Standard, plus Goodman, Rheem, York, and Daikin. For Commerce City customers, this means faster turnaround. We are not waiting on a warehouse in another state. Our trucks are stocked for the brands we see most often in local homes, from the Carrier high-efficiency units in Reunion to the Trane systems common in Buffalo Mesa builds. When your furnace quits on a Saturday night, that parts availability matters.
Common Heating & Furnace Problems We See in Commerce City Homes
- Filters loading in 30-45 days. The Suncor refinery puts particulate and VOCs into the air that standard 1-inch media was never designed to handle. Homeowners who treat Commerce City like any Denver suburb end up with frozen coils in summer and cracked heat exchangers in winter.
- Short-cycling in master-planned communities. Builder-grade furnaces in Reunion and Buffalo Mesa were often paired with undersized filters and basic thermostats. When filters clog fast and airflow drops, high-limit switches trip. The furnace runs for three minutes, shuts off, repeats. This wears components and drives up gas bills.
- Wi-Fi thermostat failures masking furnace lockouts. Smart thermostats in new builds look sophisticated, but they cannot compensate for rollout switches tripping from VOC-sensitive conditions near the refinery. The app says “offline.” The real problem is combustion safety.
- Undersized ductwork in older homes. Post-WWII working-class housing near the industrial core has ductwork sized for 60% furnaces from another era. Modern 90%+ variable-speed equipment needs proper static pressure. Without it, you get noise, uneven heating, and premature heat-exchanger failure.
Heating and Cooling in Commerce City, Done Right
Denver Metro winters start sharp and summers climb fast. Your furnace works hard at altitude, and that first heat wave tests every builder-grade AC that came with the tract house. Fireside keeps Commerce City homes steady through both, with journeymen who size the fix honestly, tape the boot seams, and leave the thermostat where they found it.
We named this company for the warmest word in the American memory because that’s the feeling we deliver, backed by our 90-Day Done Right Promise in writing. we coordinate through our Denver Metro service area Same-day service when the season turns. Ask about our $89 seasonal tune-up.
Heating & Cooling in Commerce City
Colorado’s altitude swings and dry winters punish furnaces hard, then the first June heat wave tests every AC that sat idle for eight months. We see it every season: builder-grade units in tract housing aging past their design life, coils clogged from cottonwood season, no-heat calls at 2 a.m. when the temperature drops forty degrees overnight. Our techs are licensed, insured journeymen who give you honest math on repair versus replace, put on shoe covers without being asked, and leave the price where you can read it. we coordinate through our Denver Metro service area
Ask about our $89 seasonal tune-up. Catch the problem before the cold front does.
Heating & Cooling in Commerce City
Colorado’s altitude swings and dry winters punish furnaces hard, then the first June heat wave tests every AC that sat idle for eight months. We see it every season: builder-grade units in tract housing aging past their design life, coils clogged from cottonwood season, no-heat calls at 2 a.m. when the temperature drops forty degrees overnight. Our techs are licensed, insured journeymen who give you honest math on repair versus replace, put on shoe covers without being asked, and leave the price where you can read it. we coordinate through our Denver Metro service area
Ask about our $89 seasonal tune-up. Catch the problem before the cold front does.
Pricing for Heating & Furnace in Commerce City, CO
| Service | Price Range in Commerce City |
|---|---|
| Furnace Tune-Up | $80-$200 |
| Furnace Repair | $150-$700 |
What moves the number? Parts versus labor, accessibility of your furnace, and whether we find secondary issues during diagnosis. A failed ignitor on a Carrier furnace in an accessible attic is on the lower end. A gas valve replacement in a cramped crawl space with VOC corrosion is more. We quote upfront, before any work begins. The price quoted is the price paid. Free estimates, no obligation. Call (866) 561-3358 for your exact number.
We also offer a Free Second Opinion on Any Written Estimate. If another contractor handed you a quote that feels high, we’ll look at it.
We Also Serve Cities Near Commerce City
Our service area extends to Commerce City and surrounding communities including Northglenn, Thornton, Westminster, and Denver. Each city has its own housing stock and heating challenges, but our dispatch and parts network keeps response times short across the northern metro. If you’re on the border between Commerce City and Thornton, we know the area. We’ll find you.
Serving Commerce City, CO - Our Local Coverage Area
We’re based in the Commerce City area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Heating & Furnace in Commerce City
The Suncor Energy refinery upwind of Commerce City generates particulate and petroleum-based VOC loading that standard 1-inch filters were never designed to handle, regardless of your home’s age. In neighborhoods within two miles of the facility, 30-45 days is typical filter life, not 90. We recommend a 4-inch media cabinet upgrade with a filter-subscription schedule timed to local conditions. Call (866) 561-3358 and we’ll measure your system for compatibility.
Yes. Builder-grade 1-inch filters in Reunion and Buffalo Mesa homes clog rapidly from refinery particulate, restricting airflow and causing the high-limit switch to trip. The furnace overheats, shuts down, restarts, and repeats. This cycle damages your heat exchanger and drives up utility bills. We typically resolve this with a media cabinet upgrade and proper airflow measurement. Call (866) 561-3358 for a free diagnosis.
Yes. At 5,200 feet, altitude reduces combustion efficiency and increases CO production risk, while refinery particulate accelerates heat-exchanger deterioration. Annual combustion analysis and visual inspection catch cracks before they become safety hazards. Our $89 tune-up includes both. Call (866) 561-3358 to schedule.
A Wi-Fi thermostat can be installed on most 1960s furnaces with proper wiring adaptation, but it will not solve furnace lockouts caused by VOC-sensitive rollout switches tripping near the refinery. The smart feature is convenient. The combustion safety issue underneath it is not. We assess both before recommending any thermostat upgrade. Call (866) 561-3358 for an evaluation.
That smell is usually accumulated dust and particulate burning off heat-exchanger surfaces, common in Commerce City’s high-particulate environment when filters load faster than expected. If the odor persists beyond 48 hours after filter replacement, it may indicate an airflow or combustion issue requiring inspection. Do not ignore persistent burning smells. Call (866) 561-3358 and we’ll check it same-day if needed.
Written by Glen Hartman, Owner at Fireside Heating & Air Co., serving Commerce City and surrounding communities since 2018.