Denver metro & front range suburbs
Denver's Best Heating and AC Repair — Colorado HVAC company logo with royal blue, red, and gold

Furnace Repair in Denver, CO

24/7 emergency furnace repair — same-day service, upfront pricing, EPA & NATE certified technicians.

When your furnace breaks down in a Denver winter, you need fast, reliable repair — not a sales pitch for a new system. Denver's Best Heating and AC Repair has been fixing furnaces across the Denver metro for over 10 years. Our NATE certified technicians diagnose the root cause and give you a written, upfront quote before any work begins. We service all major brands including Trane, Carrier, Goodman, Rheem, Lennox, and more.

Furnace repair pricing depends on the part and complexity. Typical repairs we quote: igniter replacement $300–$325, blower motor $900–$1,200, thermostat replacement $275–$450, plus heat exchanger inspection when needed. Residential diagnostic is $79.95 and is waived when you proceed with an approved repair; commercial diagnostics typically run $150–$250.

Denver's Best HVAC technician servicing Velocity boiler with copper piping in mechanical room
Certified heating service — precise work on boilers, furnaces, and hydronic systems.
Denver HVAC technician testing furnace combustion with analyzer
Combustion analysis on every furnace repair — we verify safe operation before leaving.

Brands We Service

TraneCarrierGoodmanAmanaRheemRuudMaytagGEComfortmakerHeilLennox

Furnace Repair in Denver and the Front Range

We provide furnace repair across Denver and nearby Front Range communities including Aurora, Lakewood, Littleton, Centennial, Englewood, Westminster, Arvada, Thornton, Broomfield, Parker, and Highlands Ranch. Our dispatch model is built for metro coverage, with technicians routed by proximity so we can offer same-day service windows for most calls and rapid emergency response when safety or comfort is at risk.

Colorado homes face a unique HVAC mix: high-altitude combustion requirements, dramatic shoulder-season temperature swings, hail-season equipment wear, and dry-air airflow challenges that affect filter loading and system efficiency. Our team accounts for these Denver-specific factors during diagnosis and recommendations, so repairs and installations are matched to local operating conditions, not generic out-of-state assumptions.

If you are comparing contractors for furnace repair, ask for licensing, insurance, certification, and written scope details before approving work. We provide all of that up front, including clear pricing, realistic timelines, and practical options based on equipment age, operating costs, and long-term reliability for Denver-area homes and businesses.

Why Denver Homeowners Choose Us

10+ years serving the Denver metro. Here is what sets us apart from other HVAC companies.

NATE & EPA Certified

North American Technician Excellence certification is the HVAC industry's highest credential. Our EPA Section 608 certification is federally required for refrigerant handling.

True 24/7 Emergency Service

Live dispatch, not an answering machine. When you call at 2am, a real technician dispatcher answers and routes the nearest available tech to you.

Upfront, Flat-Rate Pricing

We quote the full job price before starting any work. No hourly surprises, no hidden fees. Residential diagnostic $79.95 — waived when you proceed with an approved repair. Commercial diagnostic typically $150–$250.

All Major Brands Serviced

Trane, Carrier, Goodman, Rheem, Lennox, Amana, Maytag, GE, Comfortmaker, Heil, and more. Our technicians carry parts for the most common brands on every truck.

4.3-Star Rated

Over 84 verified customer reviews. We earn our reputation on every call — we will tell you when repair makes more sense than replacement.

Denver Altitude Specialists

Denver's 5,280-ft elevation affects HVAC combustion and performance. Our technicians are trained on altitude adjustments that general contractors often miss.

Furnace Repair FAQs

Typical furnace repairs we quote: igniter $300–$325, blower motor $900–$1,200, thermostat $275–$450, plus heat exchanger inspection when indicated. Residential diagnostic $79.95 (waived with an approved repair); commercial diagnostic typically $150–$250. Emergency after-hours repairs carry a $75 surcharge. Written upfront quotes before any work begins.

4.3 Stars — 84+ Google Reviews

Real reviews from Denver homeowners and businesses. We earn every one.

Genesis Payne
HVAC Maintenance

"I booked them for a full HVAC system checkup before winter. They inspected heating and cooling units thoroughly. A few small issues were fixed on the spot. Very reliable and skilled team."

April 2026
Russell Ellis
AC Repair

"Our air conditioning stopped working in the middle of summer. They responded fast and provided excellent HVAC repair service. The technician was professional and very knowledgeable. Our home is cool and comfortable again."

April 2026
Jessica Maslow
Emergency Furnace Repair

"Great service and communication! Our furnace went out during a cold spell and they were able to get us back up and running within a day. The team was easy to work with and explained everything well. Alfredo, Merrill and Lisa went above and beyond to take care of us! Highly recommend!"

April 2025
Isela Lopez
AC Repair

"My AC quit working on a 90 degree day. I called Denver's Best and they were able to fit me in for a same day appointment. I was so thankful to get my AC repaired the same day — especially with my 3 kids home for summer vacation. AJ was very knowledgeable and professional! I will be calling this company for any future AC or heating repairs."

July 2024
Michael Smith
Furnace & AC Installation

"We give Denver's Best HVAC five stars. Very fair pricing on our water heater, furnace replacement, and AC install. Merrill, the install tech, was very knowledgeable. He identified duct work issues improving air flow throughout the house, and installed a REME-HALO air purification system. Our air is now very clean. You REALLY ARE Denver's Best HVAC."

March 2024
Jame Clario
AC & Furnace Installation

"The service on my AC and furnace install was wonderful. The office staff was very responsive and professional. Zachary, my technician, was very thorough and knowledgeable. He kept me informed and also advised me on getting regular maintenance. I would highly recommend this company."

June 2023

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