Heating & Furnace Repair in San Jose
Cold nights in the South Bay are no time to wait on heating repair. Therma Tech keeps San Jose homes warm with same-day furnace service, expert installations, and honest diagnostics from a team that's been doing this for 18+ years.
Licensed & Insured
CA #913806
NATE-Certified
Background-checked techs
4.9★ Rated
900+ verified reviews
18+ Years
Serving the Bay Area
We service every major furnace and boiler brand — Carrier, Lennox, Trane, Goodman, Rheem, Bryant, and more. Our technicians arrive in fully-stocked trucks so most repairs are completed on the first visit. If a new system makes more sense than another repair, we'll tell you straight, then size and quote replacements honestly.
Safety is non-negotiable. Every heating call includes a complimentary carbon monoxide check, heat exchanger inspection, and combustion analysis. If we find a safety issue you needed to know about, we'll show you the readings — not just the bill.
Routine maintenance keeps a furnace running 30–40% longer and uses less gas. Ask about our annual Furnace Tune-Up — $160 includes a full inspection, cleaning, calibration, and a written performance report.
Service Areas
We provide heating & furnace repair across:
- San Jose
- Santa Clara
- Sunnyvale
- Cupertino
- Campbell
- Los Gatos
- Milpitas
- Mountain View
- Palo Alto
- Fremont
- Saratoga
- Gilroy
- Hayward
- Union City
- Newark
- Castro Valley
- San Leandro
- Pleasanton
- Dublin
Related HVAC Services
Heating & Furnace Repair — FAQs
Ready to Schedule Your Service?
From repairs to full installations — our NATE-certified technicians are ready to keep your home comfortable. Book online or call us.