Full-Service Plumbing, Heating, and AC Solutions for Homeowners in San Marcos, CA

Looking for home services professionals who can get the job done without hassle? Work with our team at Thompson Plumbing Heating and Air Conditioning for exceptional service. Our San Marcos plumbers and HVAC technicians will take the time to understand your needs and present you with options that fit your goals and budget. 

Call today for quality plumbing and HVAC services in the San Marcos, CA area. Your peace of mind is our priority–we will work closely with you to identify the source of your plumbing, heating, or cooling problem and offer the best solution for your home.

Work With the Preferred Heating and Air Conditioning Company in San Marcos, CA

AC not cold enough? Struggling with recurring indoor air quality problems? Get the answers you need when you work with our San Marcos, CA heating and air conditioning experts. We work with all makes and models of HVAC systems and offer full installations, repairs, and servicing to help you achieve your indoor comfort goals easily and efficiently.

Give us a call today to book an appointment for heating, air conditioning, or indoor air quality services in San Marcos, CA.

Peace of Mind Plumbing: Contact Our San Marcos Plumbers Today for Immediate Service

Plumbing problems can lead to water damage, structural damage, and high water bills. Don’t leave your plumbing concerns to just anyone. Call on the experts your neighbors have trusted since 1980. Thompson Plumbing Heating and Air Conditioning will get to the bottom of your plumbing issue and offer options for repair or replacement to help you enjoy long-term peace of mind. Reach out today to schedule trusted plumbing services in San Marcos, CA.

Call Now and Get Your Plumbing or HVAC Needs Resolved ASAP With Our San Marcos Professionals

The last thing you want to deal with is an AC problem or an unexpected plumbing leak. If you are having issues with your plumbing or HVAC system, don’t hesitate to reach out to our experts at Thompson Plumbing Heating and Air Conditioning for immediate service. We will have the problem identified and resolved in no time using safe, proven solutions.

Contact our experts today and schedule your next plumbing, heating, or AC service with us in San Marcos, CA or the surrounding area. 

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    Local Reviews
    for San Marcos, CA

    Thompson Plumbing Heating and Air Conditioning Rated 5.0 out of 5 stars based on 6 customer reviews

    Great Experience; AGAIN!




    Review of Thompson Plumbing Heating and Air Conditioning

    Recently our water heater’s pilot light went out. I knew how to re-light the pilot, but I didn’t plan on discovering a leak and an inch of water. Fortunately for me, I knew who to call: “Thompson Plumbing” and ask for Thomas! He is Great Plumber! He is Prompt, Professional, Knowledgeable, Efficient, Reliable, Dependable and Courteous. I know that my New Water Heater is Working Great and Installed “Expertly”. I will recommend Thompson to my Friends and call again, if the need arises. I hope it doesn’t, but I certainly know who to call.


    Thompson Plumbing Outstanding Plumber: Thomas




    Review of Thompson Plumbing Heating and Air Conditioning

    I write reviews when they are deserved and this one is! Thomas B. Is a Professional, Courteous, Experienced Plumber who is a great Representative for Thompson Plumbing. He arrived on time well within the time frame. He explained his companies policies and took the time to listen to my concerns. He assessed my plumbing problem, quoted me a fair quote and he began. Regrettably the job turned out to be more challenging than expected, but he was not deterred. He kept me informed and he expertly remedied the problem. I was impressed with the: His Service, Knowledge, Expertise, Demeanor and Professionalism. I have found “My” Plumber! It is a relief to find a Reliable and Trustworthy Company. “Bravo Zulu, Thomas! (That’s Navy for Great Job!)


    Amazing Service




    Review of Thompson Plumbing Heating and Air Conditioning

    Ignacio arrived on time and was very helpful. We definitely recommend Thompson for anyone in need of their services. Thank you guys again for your help it is very appreciated!


    Great 👍




    Review of Thompson Plumbing Heating and Air Conditioning


    Great Service




    Review of Thompson Plumbing Heating and Air Conditioning


    Fast and done right




    Review of Thompson Plumbing Heating and Air Conditioning


    Ty J.

    Ty J.

    Bad HSI,replaced HSI and tested the system in both heating and cooling. Tested the system at the indoor unit to see if both w2 and y2 worked and it functions as should. Advised customer if the second stages don’t work from the thermostat that the thermostat would have to be replaced. Service San Marcos.

    Near Via Vera Cruz, San Marcos, CA 92078
    Ignacio V.

    Ignacio V.

    We will remove and replace the existing p trap with new abs p trap and rebuild drain with pop up assembly.

    Near Via Inspirar, San Marcos, CA 92078
    Will  B.

    Will B.

    This is a gas control valve replacement. Customer went through manufacture water heater Rheem manufacture send a brand new gas control valve. To perform this job we were required to drain water heater to install thread on new gas control valve unthread existing restore water back onto water heater test for proper function. If new gas control valve once we test for proper function doesn’t properly work then the next step would be to replace defective water heater. Thompson Plumbing would not warranty gas control valve because it was a customer supplied

    Near Via La Ranchita, San Marcos, CA 92069
    Ty J.

    Ty J.

    Cooling maintenance. System evaluation showed no issues and the system is running within mfg specs. Service San Marcos.

    Near Ficus Ln, San Marcos, CA 92069
    Ignacio V.

    Ignacio V.

    Kitchen sink is not draining. Ran 25 foot cable from outside clean out. At approximately 15 feet I felt the obstruction. Pushed through it and the water flushed away. Continued running cable to the 25 foot limit and felt some resistance. I recommend we inspect the drain lines and possibly preform a jetting to clean out the pipes.

    Near English Holly Ln, San Marcos, CA 92078
    Ignacio V.

    Ignacio V.

    Customer has a guest shower that backs up whenever someone showers. Ran cable approximately 10 feet and cleaned out as much buildup as possible. Turned on shower and ran it for approximately 2 minutes with no signs of water backing up. Recommended to customer to have their drain lines inspected to see if there are in obstruction’s in their lines that can be causing the back ups. There is no warranty with this service

    Near Via La Ranchita, San Marcos, CA 92069
    Thomas B.

    Thomas B.

    Replace tub diverter dark/bronze

    Near Antilla Way, San Marcos, CA 92078
    Thomas B.

    Thomas B.

    Replace leaking shower valve moan posi temp Replace hose bib out side

    Near Antilla Way, San Marcos, CA 92078
    Ty J.

    Ty J.

    Cooling maintenance, evaluation of system showed nothing out of the ordinary and that the system is running within mfg specs. Service San Marcos.

    Near Vista Colina Dr, San Marcos, CA 92078
    Thomas B.

    Thomas B.

    Replace burst water heater 50 gallon natural gas

    Near Hilcorte Dr, San Marcos, CA 92069

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    (760) 842-7630

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