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46 Years
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Emergency
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Your Trusted HVAC & Plumbing Experts in Oceanside, CA
Thompson Plumbing Heating & Air Conditioning has been a trusted provider of HVAC and plumbing services in Southern California since 1980. As a family-owned and -operated business, we prioritize personalized service and community values, ensuring every customer receives reliable solutions tailored to their needs. Our team of certified technicians brings decades of combined experience to every project, specializing in high-efficiency HVAC systems, comprehensive plumbing repairs, and indoor air quality improvements. We are committed to exceeding industry standards through continuous training, cutting-edge technology, and a dedication to customer satisfaction.

With two convenient locations in Oceanside and Escondido, we serve both residential and commercial clients, offering 24/7 emergency services to address urgent needs. Our reputation for punctuality, transparency, and quality workmanship has earned us a loyal customer base and numerous five-star reviews. As the first independent Trane dealer in San Diego County, we combine trusted brand partnerships with local expertise to deliver lasting comfort solutions. From routine maintenance to complex installations, we approach every job with the same meticulous attention to detail that has defined our legacy for over four decades.
Services
AC Repair Heating Installation Plumbing Maintenance Indoor Air Quality Ductwork Repair Water Heater Services Sewer Replacement Furnace Repair Garbage Disposal Installation Drain Cleaning
Details
  • Year established: 1980
Highlights and features
  • Family-owned since 1980 with 40+ years of local HVAC and plumbing expertise
  • 24/7 emergency services for urgent heating, cooling, and plumbing needs
  • Certified technicians with ongoing industry training and specialized skills
  • Comprehensive service agreements for proactive system maintenance
  • First independent Trane dealer in San Diego County with premium equipment
Associations and certifications
  • Trane
What people say
Knowledgeable technicians Great service Prompt response Professional staff Fair pricing
Services
HVAC Maintenance
Our comprehensive HVAC maintenance includes seasonal inspections of heating and cooling systems to ensure optimal performance. Technicians perform coil cleaning, refrigerant checks, thermostat calibration, and safety control inspections. Regular maintenance extends equipment lifespan, improves energy efficiency, and prevents unexpected breakdowns during peak usage months.
Plumbing Repairs
We provide 24/7 plumbing repair services for leak detection, pipe bursts, sewer line issues, and fixture malfunctions. Our technicians use advanced diagnostic tools to identify hidden leaks and perform same-day repairs for water heater failures, clogged drains, and gas line emergencies.
Indoor Air Quality
Our indoor air quality solutions include HEPA filtration systems, UV air sanitizers, and whole-house humidifiers. These technologies remove allergens, bacteria, and volatile organic compounds from circulating air, creating healthier environments for homes with pets, allergies, or respiratory-sensitive occupants.
Ductwork Repair
We specialize in sealing air duct leaks, replacing damaged duct sections, and improving insulation to enhance HVAC efficiency. Our process includes pressure testing to identify airflow issues and installing energy-efficient materials that reduce utility costs while improving temperature consistency throughout properties.
Water Heater Services
We offer tankless water heater installations, traditional tank replacements, and annual maintenance services. Our technicians diagnose heating element failures, pressure valve issues, and sediment buildup problems to ensure consistent hot water supply while maximizing energy efficiency.
People
Garett Baird
Owner
Garett Baird has served Southern California's HVAC and plumbing needs for eight years. He earned ownership in 2012 when founder Tom Thompson chose him to continue the company's legacy of excellence. Garett focuses on helping clients understand their comfort options while maintaining the company's commitment to quality service.
Sara Baird
Owner
Sara Baird co-owns Thompson Plumbing Heating & Air Conditioning with her husband Garett. She contributes to strategic growth while maintaining the company's family-oriented approach to customer service established in 1980.
Questions
What areas do you service?
We serve Oceanside, Escondido, and surrounding areas of Southern California for all HVAC and plumbing needs.
Do you offer emergency services?
Yes, we provide 24/7 emergency repair services for heating, cooling, and plumbing system failures.
Are financing options available?
Yes, we offer financing options for major HVAC and plumbing system replacements.
What maintenance plans do you offer?
We provide seasonal HVAC tune-up agreements and annual plumbing maintenance plans with priority service scheduling.
How can I improve indoor air quality?
We recommend HEPA filtration systems, UV air sanitizers, and regular duct cleaning to enhance indoor air quality.
What payment methods do you accept?
We accept major credit cards, cash, and financing options for all our services.
Reviews (6)
Diana S. Ballard
Oct 19, 2021 Report
arrived on time. Friendly and professional. very transparent. took pic of everything he fixed before and after. did nice job of installing the faucets on my new sinks. checked my water pressure and found it extremely high. had to fix that to which possibly prevented another major problem. I was happy. Thanks Thomas.
Brenda Pontanes Galimba
May 12, 2021 Report
Thompson Plumbing Heating and A/C company is a very reasonable and professional. Their technicians are very knowledgeable and knows what theyre doing. For all my HVAC needs in the future I would not hesitate to call Thompson PHAC again.
Gary Kocheran
Nov 22, 2019 Report
Great response to my moms clogged toilet. Was there in less than 30 minutes. Gave me good advise to help so it doesnt happen again. Great guy that did the service.
William Nugent
Oct 19, 2019 Report
So far, we've had new ducting installed for our central heating and AC, dryer vent cleaning, and annual checks of our heater and AC performed by Thompson Plumbing, Heating and Air Conditioning Company. In each case we received prompt and courteous service from their skilled technicians. Look no farther than Thompson if you are looking for a top-notch plumbing, heating and AC company.
Brandi Marie Duncan
Jul 25, 2017 Report
Great service and very affordable. My A/C wasn't kicking out the coolest air that it could and I called all around town looknig for an HVAC service provider. Being summer, it was almost impossible to get an appointment with anyone (let alone an affordable one). Thompson Heating and Air had me set up within a few days, came out, fixed the problem and will now be out bi-yearly to make sure both the heat and A/C are working at peak performance!
Mary Chesebrough
Jun 01, 2017 Report
Excellent Heating and Air Company. The owner, Garett, is awesome as well as the people that work for him. They are professional and prompt. I had my air conditioner and heater replaced and they did a great job. I had already had 4 other companies give me an estimate before Garrett came out. They were straightforward and there was no pressure. Their pricing was competitive. I would definitely recommend them!!