Furnace Repair in Thornton, CO
If your furnace has stopped working, is blowing cold air, or making strange noises, Thornton Heating and Air is ready to help. We provide fast, reliable furnace repair services in Thornton, Northglenn, Commerce City, Sherrelwood, Federal Heights, and Welby — with same-day and emergency appointments available 24/7.
Common Furnace Problems We Fix
- Furnace won’t turn on
- No heat or weak airflow
- Thermostat not responding
- Burning smell or unusual noises
- Short cycling or high utility bills
All Furnace Brands Repaired
Our certified HVAC techs can diagnose and repair all major brands, including Carrier, Lennox, Trane, Goodman, Bryant, Rheem, American Standard, and more.
Why Choose Thornton Heating and Air?
- Licensed and NATE-certified furnace technicians
- Upfront pricing and clear diagnostics
- Fully stocked service trucks = faster repairs
- Locally owned and trusted in Adams County
- Backed by warranty and service plans (view plans)
- Emergency furnace service available anytime
We Provide Furnace Repairs In:
Considering a full upgrade? Explore furnace installation options or learn whether to repair or replace your furnace.