Reliable Heating, Air & Plumbing ServicesRight Here in San Diego, CA
Locally owned and trusted for over 40 years. From fast AC repairs and furnace installations to slab leak detection and 24/7 plumbing emergencies, our licensed technicians keep your property comfortable and safe.
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Fill out the form below or call (858) 571-8865 for 24/7 dispatch.
San Diego's Full-Service HVAC & Plumbing Contractor
Whether you need a new high-efficiency AC system, emergency furnace repair, or water heater replacement, our master technicians arrive equipped to do the job right.
Air Conditioning
Full-service AC repair, seasonal tune-ups, ductless mini-splits, and high-efficiency Carrier, Bryant & Trane installations tailored for San Diego weather.
- Same-day emergency AC repairs
- Ductless mini-split systems
- Energy-saving SEER2 replacements
Heating & Furnaces
Stay cozy during chilly winter evenings. We service, repair, and install high-efficiency gas furnaces, heat pumps, and dual-fuel climate systems.
- Furnace safety inspections & tune-ups
- Heat pump conversions
- Duct repair & airflow balancing
Plumbing Services
From burst pipes and slab leaks to tankless water heaters and whole-home repiping, our licensed San Diego plumbers resolve problems quickly.
- Water heater repair & tankless installs
- Electronic slab leak detection
- Drain cleaning & hydro-jetting
More Than a Service — A Family Legacy Since 1980
THA Heating Air & Plumbing Inc. has proudly delivered honest, dependable service for over four decades. We treat your property with the utmost respect: boot covers, clean work sites, clear upfront explanations, and guaranteed workmanship.
40+ Years in San Diego
Continuously operating and community focused since 1980.
24/7 Emergency Line
Live dispatch ready around the clock for heating, AC, and leak emergencies.
BBB A+ Accredited
CA state licensed and fully insured for residential and commercial.
GreenSky® Financing
Flexible low-interest monthly payment plans for new installations.
100%
Licensed Technicians
1980
Established in San Diego
Upgrade Your AC, Heater or Water Heater with Easy Monthly Payments
Don't let unexpected equipment breakdowns stress your budget. We offer flexible financing options with competitive interest rates and fast approvals.
What Our Neighbors Say About THA
Honest communication, quick diagnostics, and respectful service have earned THA a 5-star reputation across Yelp, Google, and Angi.
"Oliver from THA did an amazing job! He was able to diagnose and fix our plumbing issue really quickly. He was polite and friendly, walked me through what he found, and explained preventive measures. I will definitely be using THA again!"
"Matthew and his crew went above and beyond to help our family. We have a 10 day old newborn and our broken AC was a nightmare before a warm holiday weekend. Matthew stepped in the day of to get it resolved. Professional, timely and empathetic!"
"Oliver was fantastic. The best plumber I’ve ever worked with. He is patient, polite, knowledgeable about many contracting specialties, explains things well, and cleans up after his work better than he found it. 5 stars!"
"This was the second time we used THA services. Oliver Rivers did excellent work on our new water heater replacement after our old one lasted 12 years (which THA installed too!). Matthew Metanat is very professional and kind."