Rated 5.0 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.

  •   This team is top notch. Experienced foreman, energetic team and great customer attitude. I am very delighted that they have a schedule for me!

    3 and half days non stop installation of a mini split system with more than
    9 people there from two teams at one point.

    90%  done, now we just have to wait for a Cupertino city inspector!

    thumb Sun L.

      We needed a new furnace and had called around to a few different HVAC companies.  We went with Therma Tech.  They were organized, came out as scheduled for the estimate and were knowledgable and informative.  They completed the install of our furnace in a timely manner and cleaned up when they were done.  Their price was on par with other companies.  I'm very happy with the new furnace and would use Therma Tech again when needed.

    thumb Margo B.

      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.
  •   This HVAC company is amazing. Started off with Vicky who answered the phone, so helpful and sweet. Called on Friday they sent someone Monday. Henry was fast and even saved me money   highly recommend everyone to use this company. Thank you Therma Tech

    thumb Julie H.

      Fantastic service! The furnace at my mom's house wasn't working. Talked to Henry, he said he could be out the following day by noon, arrived before 11am, and within an hour had the furnace fixed and working again! And, the cost of repair met expectation and reasonable.

    Pleasant fellow to work with, tremendous communication, will definitely use him for any future furnace/AC work.

    thumb Bill C.

      Had an issue with our furnace's control board.  Henry, the owner, himself came out to do the diagnosis.  Everything was fixed within 2 hours, including ordering/picking up the parts, and coming back to reinstall.  Also, communication and status of technician dispatch was on point (via text messages).  Highly recommend and will use again (but hopefully will not need to use again).

    thumb Daniel L.
  •   Therma Tech was amazing from A - Z! It's rare you find a company nowadays that genuinely cares and does not try to upsell you. AC unit was not blowing cold and Henry came through to fix it in record timing. He's very respectful and wore a mask throughout the entire ordeal. I'll be a for sure returning customer. Highly recommend you choose them, you won't regret it one bit.

    thumb Kevin C.

      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.

      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.
  •   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.

      Henry did an amazing job. Our AC wasn't blowing cool air but he was able to fix it in a timely matter. Originally, our appointment was scheduled in the afternoon, which is usually the time our house gets into warm uncomfortable temperatures. However, Henry was able to come in the morning. I was so relieved because I thought my baby would have another day of restless naps. I highly recommend this company because they're efficient, followed the masking protocols, and trustworthy.

    thumb Charlene C.

      I called them to give an estimate for installing a new HVAC system in my house. Henry came ahead of time and explained the cost of adding a new HVAC vs mini splits. Although they don't do mini splits, he suggested I go with mini splits instead of HVAC as it would be cheaper. While this project didn't work out, this experience has been so positive that I would always check with Thermatech for all my future HVAC needs.

    thumb Siva Y.
  •   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.

      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.

      Henry was so quick and efficient! I called at 7:30am and he was here within an hour. He found the problem and fixed right away. Extremely happy with the service we received. Thank you!

    thumb Lexi W.
  •   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.

      This review is a bit overdue but better late than never! Long story short, recently bought a place with no real heating or AC (single radiator furnace and single wall unit in the dining area) and no attic. The best solution seemed to be a mini split system.

    Coordination for the initial visit was super easy and fast. Henry came out that same week and provided a great price. FYI I received several quotes from other HVAC companies and ThermaTech beat them hands down. Not even close.

    Signed the contract and the team was out the following week to install a 4 unit mini split system. They were very professional, showed up on time ready to work, and knocked it out in 3 days. They also took care of permits and kept me well informed of scheduling with the city.

    Been using the system now for 3+ months with ZERO issues. It's been a life saver during the colder early months and hotter days now that we're getting into summer.

    Henry and team are definitely 5 stars in my book. If you guys need HVAC related work I'd highly recommend ThermaTech!

    thumb Richard K.

      I called them to have one of their techs to look at my broken AC. The lady on the phone was super nice and after letting her know that I've recently moved in, she told me although my AC unit is old but I may have warranty on the house which will cover the AC as well.
    I checked, and guess what, there was warranty and my AC was covered.

    Now I know who should I call to when my warranty is over.

    thumb Saeed D.
  •   We had a problem with our gas furnace which wouldn't turn off.
    Called Therma Tech and Vicky was nice enough to arrange of sending a
    technician our way the next day.  Chris showed up early and spent a few
    minutes on it. His diagnosis: There's nothing wrong with the furnace;
    possible culprit could be the faulty thermostat; since it's working fine, there's
    nothing to fix. The whole experience was warming (pun intended) and we
    know whom to turn to when the furnace acts up again (pretty sure it will).

    thumb William P.

      They are doing a good job, on schedule, and try to provide the best solution even though it may mean that it takes a little more time.

    thumb Bill P.

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