Furnace Repair
Our technicians quickly diagnose and repair furnace issues, ensuring that you stay warm during Longmont's colder months.
š (719) 220-9646 ā Call NowProfessional Furnace Repair
Our technicians quickly diagnose and repair furnace issues, ensuring that you stay warm during Longmont's colder months. Our experienced team at ThermalPros Heating and Air Conditioning delivers outstanding results for every client in Longmont and surrounding areas.
Contact us today to schedule your HVAC service. We offer free estimates and flexible scheduling to fit your needs.
How We Handle Furnace Repair
No two Furnace Repair situations are identical, so we don't pretend otherwise. A furnace that won't ignite, short-cycles, or blows cold air needs proper troubleshooting ā not guesswork. Our Furnace Repair diagnostic checks the igniter resistance, flame sensor microamp reading, pressure switch operation, and inducer motor function before we recommend anything. We inspect the heat exchanger for cracks using a mirror and flashlight (because a cracked exchanger leaks CO). You'll know exactly what's wrong, what it costs, and whether repair vs. replacement makes more financial sense. Our trucks stock igniters, flame sensors, draft inducers, and control boards for same-day resolution in Longmont.
The Furnace Repair Difference
Every Furnace Repair call includes CO testing and draft verification before we leave your home.
We check for cracks that leak carbon monoxide ā the #1 safety concern in furnace repair. Visual + instrument verification.
Igniters, flame sensors, draft inducers, control boards ā we stock them all for same-visit repairs in Longmont.
If your furnace is 15+ years old and the repair is major, we'll show you the cost comparison ā no pressure.
We're headquartered right here ā not a national chain routing calls through a distant dispatcher.
Every team member passes a thorough background check before working on your property.
Furnace Repair Across CO
We serve Longmont and surrounding communities including Longmont, Boulder, Loveland, Berthoud, Firestone, Frederick, Erie, Lafayette. If you're in the area, we can get to you quickly. Call (719) 220-9646 for a free assessment ā we'll give you an honest evaluation, not a sales pitch.
Homes in Longmont ā many from the 1970s-2000s suburban growth ā share common characteristics that affect repair and maintenance needs. The semi-arid continental climate creates hailstorms, which accelerates wear on specific systems. Our technicians know these patterns from years of hands-on experience in Longmont-area properties.
Trusted for Furnace Repair
Certified crews, transparent pricing, and work we stand behind.
Call (719) 220-9646Equipment Built for Furnace Repair
Our Furnace Repair Work
Why Our Furnace Repair Customers Come Back
"Had to call ThermalPros when our upstairs unit was blowing hot air. Their tech, Jason, was super friendly and found the issue in minutes. Thanks for getting our comfort back!"
Lisa R.
Verified Customer
"I was struggling to breathe with all the dust from our outdated furnace. Called ThermalPros, and they replaced it and cleaned the ducts. Now the air feels so fresh!"
Gemma K.
Verified Customer
"ThermalPros helped us out when our AC went out just before a weekend barbecue. They fixed it the next day, but it took a bit longer than expected which is why Iām at four stars."
Tom S.
Verified Customer
Furnace Repair ā Frequently Asked Questions
- Is a furnace repair or replacement better?
- If your furnace is under 15 years old and the repair is under $1,000, repair usually makes sense. Over 15 years with a major failure, replacement often saves money long-term. We'll show you the cost comparison.
- Why is my furnace blowing cold air?
- Common causes include a faulty igniter, a tripped flame sensor, a malfunctioning gas valve, or a cracked heat exchanger that triggered the safety limit switch. Our diagnostic identifies the exact failure.
- How do I know if my heat exchanger is cracked?
- Signs include a yellow or flickering burner flame, soot buildup, a strange smell when the furnace runs, or CO detector alarms. We inspect the heat exchanger with mirrors and instruments ā a cracked exchanger is a safety emergency.
- Do you repair all furnace brands in Longmont?
- Yes. We service Carrier, Trane, Lennox, Goodman, Rheem, Bryant, York, and all other major brands. Our trucks carry common parts for same-visit repairs.
- What happens if I'm not satisfied?
- Call us. We return within 24-48 hours and make it right ā whether that means redoing work, replacing a part, or adjusting the invoice. Your satisfaction is the job.
- Can you give me references from other Longmont customers?
- Absolutely. We're happy to share recent customer contacts who've had similar Furnace Repair work done. Just ask when we meet.
- What's the cost of Furnace Repair in Longmont?
- Furnace Repair pricing depends on scope, accessibility, and materials. We provide a written itemized estimate before starting any Furnace Repair work ā so you know the total up-front, not after.
Also Serving Nearby Areas
Emergency Service Available
Need Furnace Repair?
Our team is ready to help. Call now for a free estimate.
š (719) 220-9646