HVAC trouble?
A real tech at your door — today.
Repair, install, or tune-up — San Jose homeowners have trusted our team for 18+ years. Honest pricing, zero upsells, work guaranteed.
Get help with your HVAC — fast.
Tell us what's wrong and we'll text or call within minutes to confirm a same-day window.
Our trucks are on the road today.
We're not a call-center middleman. Our fleet runs out of San Jose, staffed by technicians you'll actually get to know. Look for our trucks in your neighborhood — that's who's coming to your door.
- Fully stocked trucks — most parts on hand for same-day repair
- Uniformed, background-checked technicians
- CA License #913806 — fully licensed and insured
Whatever's wrong, we've seen it.
From a blown capacitor to a full system replacement — one call, one team, one number.
Repair
AC not cooling, furnace not heating, strange noises, weak airflow — most fixed same day.
New System Install
AC, furnace, or heat pump. Free in-home estimate, 0% financing available, up to $6,500 in rebates.
Tune-Up & Maintenance
Catch problems before they cost you. 20-point inspection, filter check, and efficiency report.
Real reviews from real South Bay homes.
"Another company told me my AC couldn't be fixed and quoted $18,000 for a full replacement. Therma Tech showed up, found a blown fuse, and had the system running in under an hour."
Bruce I.
San Jose homeowner
"Called at 5:30 PM on Friday — the hottest day of the week. A technician was on site within 30 minutes. Cool again before dinner."
"John and his crew were truly amazing. Professional, patient, and went above and beyond what I expected."
Booked in under a minute.
Tell us what's wrong
Open the scheduler or fill the 30-second form. Pick a service and a time that works.
We confirm fast
You'll get a text or call within minutes locking in your appointment window.
Problem solved
Tech arrives on time, diagnoses, quotes flat-rate pricing, and fixes it right.
Local to the South Bay.
Headquartered in San Jose. If your ZIP is here, we can usually be there today.
Don't wait for the problem to get worse.
Get a real local tech at your door today — most appointments scheduled the same day you book.