Rated 4.9 out of 5.0 based on 21 Google reviews Google Reviews

HVAC Service San Jose

We are proud to offer quality and affordable options for
all air conditioning units and Heating systems.
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Air Conditioning repair

Therma Tech Inc knows that it is important to balance our customers’ needs with that of the services we offer. We strive to make it as easy as possible for you to choose our company as the right air conditioning repair contractor for your home or business heating and cooling system needs.

We asses every home or business on space available, climate and insulation in order to help our customers choose the system that will work best for their needs. Working in this way with our customers helps in finding the best air conditioning system that is appropriate, cost effective and environmentally friendly.

Central heating and cooling is the norm for most homes and buildings in California. The initial costs of installing a centralized heating and cooling system is far outweighed by the benefits gained long term. At Therma Tech Inc we strive to keep your home or business just the way you want it, at the perfect temperature for your needs.

Heating and cooling typically makes up about 48% of your utility bill. It doesn’t matter what kind of heating and cooling system you have, you will improve your comfort level and potentially save money by upgrading and properly maintaining your HVAC equipment.

Just having an energy efficient furnace on its own will not have as great an impact on your energy bill as having a trustworthy air conditioning repair contractor providing maintenance and upgrades with recommended thermostat settings, insulation and air sealing. This offers energy bill savings of up to 30% while reducing environmental emissions.

If you are feeling cold in your home or business it may very well be that your heating system is not working as well as it should. Now would be the time to find a reputable air conditioning repair contractor to check your system and make sure it is working properly. Trust that Therma Tech Inc will do it’s best to get your home or business at the perfect environment to meet your needs.


Professional Staff

Reliable, trustworthy, knowledgable and committed

BBB Accredited Business

We're committed to being a business our customers can trust!

Award Winning Service

A+ on BBB, Elite Service Award on HomeAdvisor, & more!


Let us help you take the stress out of home maintenance.

  •   These guys are simply amazing. I had problems with my AC and called this place. Vicky answered and was very helpful. She made an appointment and technician Henry showed up on time diagnosed the problem and fixed it promptly. Thanks guys. I highly recommend this place for any such issues.

    thumb Mark Z.

      Very appreciate for Therma Tech's timely help to fix my heater burner problem.  Christine talked with me over the phone trying to help me fix the problem myself.  Once I noticed the error code, I sent back the photos and error code.  She dispatched Chris to our home, replaced the aging capacitor and fixed the problem.  It took Chris less than 90 minutes including traveling.  I very appreciated for their help.  It was so efficient!  Highly recommended.

    thumb J K.

      We had a very loud furnace sitting in the kitchen closet; we wanted to create additional space in the house and move the furnace to the attic. We also wanted to add air conditioning to the home and a new furnace. I spoke to at least 4 HVAC providers.  Henry was by far the most knowledgeable and creative in his approach. He didn't sell anything; he shared his knowledge and provided great insights into how vents need to be placed for better heating and cooling.  The quote from him was not the lowest, but I still decided to go with therma tech for the installation. The crew was professional and did a fantastic job. The original completion estimate was five days, but the crew was able to turn the heating on the third day itself.  I am happy that I worked with them. They are the best people to work with.  Thank you, Henry and the team, for the excellent work!

    thumb Jagdish U.
  •   Had not had our hvac system maintained in years. We had some odd noises come from our furnace and decided to have therma tech stop by for a check up and filter change.

    Scheduling our appointment was fast and easy. Communication via email and text with an automated reminder system was refreshing. The appointment was on time and the technician got to work right away. He said the unit was fine but there may be a faulty control board that might need to be replaced in the future. He let us know the filter model as he didn't have any of that type on hand. He did not charge us for the service as he did not find anything he needed to fix and did not have the right filter model to replace ours.

    Honest and efficient thank you! My wife feels more comfortable with using the heater now after she heard we just needed a filter change ASAP.

    thumb Gary D.

      Awesome company and service. Top-notch. Furnace stopped heating during the winter, and ThermaTech made time to squeeze in a visit during a very busy day. They quickly diagnosed the issue and scheduled an appointment to fix it the next day (which meant another night without heat). But they surprised us later that same day by calling to say they were 5 minutes away and would be able to fix our furnace within the hour. Friendly and knowledgeable staff.

    thumb Sarita D.

      I am very impressed with the AC service provided by Chris Valdez of Therma Tech.  He is knowlegeable and friendly. Thanks.

    thumb R S.
  •   Once again, Henry was amazing. Our AC stopped working at the worst possible time, and within an hour of me calling and requesting someone to come out, Henry was here. He is very friendly and is very knowledgeable about what he is doing. I would highly recommend Henry to anyone who needs assistance with their heating/cooling!

    thumb Nina A.

      The tenants had no heat/A/C for a few days and I contacted ThermaTech.
    Christie was very helpful and contacted the tenant for me to arrange a time for the Tech to come out.  She promptly called me back and Chris Valdez came out the following morning, detected the bad furnace transformer, replaced/tested it and all done in less than 30 minutes.  Now there is home heat in this unusual frigid SJ weather as these are good tenants that have been living there for many years.  I would certainly contact ThermaTech again.  Recommend their services for sure. A very good experience you can count on!

    thumb Dennis W.

      Our heater stopped running. There was a sticker of another company on the heater and I called that number to get a guy to come out and look at it. He came in and look at a couple of things then told me it was the inducer motor that was broken. He said it can be replaced for close to $1000 but the motor won't get here until a month later. At that point, I decided to try other places and see if the motor can be acquired sooner.

    I found Therma Tech, and Christine on the phone helped me get an estimated time and price for the motor and the job but said they still need to do their own diagnostics. After hearing that the part is 3 weeks out and the price similar to the first place, I decided to go with them because I wasn't a fan of the interactions I've had with the first company. We had Chris from Therma Tech come out to take a look in a couple of hours from when I called. He has all the tools he needed, checked everything he could very thoroughly, and found that the motor was stuck. He opened it up and removed the debris that made the fan inside stuck. When he put everything back together the heater ran perfectly fine.

    The charge was the diagnostics fee which was many times cheaper than the motor replacement job, and we would have been cold for the next month of time otherwise. Chris was able to find the source of the issue by checking thoroughly and systematically. What a contrast in service! This is how real professionals should work. We are so grateful for the service and for having warm air again immediately!
    Guess who I'm calling when there are any HVAC issues? This is how you win customers, bravo.

    thumb Woo K.
  •   Everyone was Great from Vicky Henry and the crew that came to do the job. Highly recommended!

    thumb Jim K.

      Giving a 5 star here because Henry saved us $10000 and potentially lost out on a huge sale, but has gained a customer for life. We were convinced that we needed to replace our entire AC unit due to a diagnosis from another HVAC repair company. We called Henry to get a second quote on a replacement and installation and he was able to come out right away. On arrival, Henry volunteered to take a look at the unit to see if there was anything he could do to fix it even though we only called him out for a quote. To our pleasant surprise, Henry was able to fix the unit and get it running again, relieving us of the need to spend $10000 on a new unit! Thank you again, Henry!

    thumb Donald W.

      When I called, they were VERY helpful, and made sure I checked my product warranty, and were very up front about the costs.  They were willing to help me save money, even if it meant I used the warranty provider instead.  That's real customer service, and it makes me trust them!  These guys put genuinely care about their customers, and if I ever need repairs that aren't covered by my product warranty, they will be the first people I call!

    thumb Brandt D.
  •   5 stars to Vicky and Henry!  Our AC went out last night and they decided to be open today due to the heat on a Saturday.  We had no cool air blowing, just room temp. Our capacitor needed to be replaced.  We now have lovely cool air again!  Very responsive!  Seriously from call to fix was maybe 30 min max.  Many, many thanks!

    thumb Julie G.

      Wow!  Had a fantastic experience with Therma Tech.  From the moment we called them, they were responsive, helpful, and speedy!  Our a/c stopped working last night... Henry was here this morning, checked it out, diagnosed the issue and got it all fixed in one go.  Very impressed and would highly recommend them.  (In addition, the call out price was one of the most reasonable we found, and the cost of that gets deducted from the work that gets done!)

    thumb alison s.

      Our furnace stopped working and we were getting cool air. After calling couple of companies that we found on Yelp, we ended up picking Therma Tech due to their quick response. From the start the service we got was fantastic. Vicki was extremely helpful not only working hard to get us an appoint for the next day but she also was helping troubleshoot the problem over the phone by guiding us how to reset the unit. The next morning we had a technician come by and within minutes was able to attribute the problem to dirty filters. He showed us how to remove and clean the filters which resolved the problem. In summary great response and excellent service.

    thumb Ziad S.
  •   Can yelp please create a 10 star button!! Omg, let me just start by saying that just calling in and scheduling someone to come out was an ease. Vicky was on point with full all around best customer service ever, she tried to work with me on scheduling even though they were so booked up (I can see why!!). She was able to get someone out the very next day. Henry, came out right on time, and I kid you not, being the expert that Henry is, he was able to troubleshoot our issue in less than 5 minutes!!  I came back out after turning on the AC unit, which wasn't blowing out cold air, and my husband was saying bye to Henry! You can't beat this kind of service! Booked mark for all my future AC/heater needs!! Thank you Vicky and Henry as I'm sitting here in my office room with cold air 🙂 !!!!!

    thumb Nena L.

      When your furnace stops working on Dec 31, with expected lows in the mid 30s overnight, and you frantically search on Yelp for someone/anyone who is available during a holiday weekend to help you diagnose a tripped flame rollout switch, things start to look pretty bleak.

    Luckily, Henry from Therma Tech promptly responded to my VM and helped me troubleshoot and solve the issue over the phone. All while driving, in between house calls, and for free!  

    If this isn't a sign of an honest and customer-first business, then I don't know what is.  I figure the least I can do is: a) post this review, b) call up Therma Tech the next time I need help/service with my HVAC unit.

    thumb Steve L.

      They are very professional and friendly to work with. They come in, troubleshoot and fix the issue, test and validate working condition and leave - very efficient and reasonable rate. Highly recommended Therma Tech for any HVAC services. Thanks Christine and Chris.

    thumb Transdata 3.
  •   Very responsive and fast to make an appointment. Appointment time was texted and then texted again when technician was on his way.
    Henry diagnosed the problem with our heater thoroughly and quickly. He tested things and even tried fixing it right there. But turned out heater needed a new limit. The part was in stock and he was able to come back a few hours later to install. We have heat again! Honest and fast.  
    I called 1 other 5 star place first and wasted $95 on their diagnostic fee! Compared to Henry the other guy was a joke! He almost got me to spend $5500 on a new heater! He didn't check anything, just looked at the heater and told me i needed a new limit and circuit board. Which was $1300 and he said he might not be able to get the parts for a while. Basically trying to sell me a new heater. Bad business!
    The circuit board is working fine Henry said.
    Henry and Therma Tech is who you should call for all your Heater and AC needs.   They have my business moving forward!

    thumb Wade N.

      had AC installed, two ducts added and the old furnace replaced in a house built in 1907.  this outfit is unusually good!  they stand behind their work.  nailed the city inspection/permit first go round.  Thank you, Henry, Vicky, and crew.

    thumb David N.

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