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.
van-images transparent bg



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.

      Henry, Vicky , Chris, An and the whole Therma Tech team of folks we worked with were all fantastic. Our air conditioning unit quit in the heat of August, just a few days before my step-father was scheduled to return to the house after having suffered a fairly serious stroke. The Therma Tech team rearranged their schedule/personnel to accommodate our special situation, and were able to identify the problem, help us decide what to do (fix the old unit or buy a new one), and get a new unit installed within about a week or so. The price Therma Tech charged for the new unit and installation was a great deal. Everyone we worked with from the Therma Tech team were kind and professional, and I can't thank them enough for helping to make my step-father's return to the house as comfortable as it could be. I highly recommend Therma Tech!

    thumb Sarah A.

      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.
  •   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.

      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.

      I called and got an appointment for the sa.e day. Techinican showed up on time. I got a text with ETA. Worked quickly and safely to diagnose problem with furnace. Would use Therma Tech again.

    thumb Melissa J.
  •   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.

      I've got an air conditioning unit that leaked coolant and 3 other companies prior to Therma Tech have all said that there's a coolant line leak somewhere in the system. Unfortunately the line goes from our compressor unit outside on the ground level through my neighbor's walls before getting to my unit. This means that trying to find the leak would involve tearing down my neighbor's walls! Therma Tech was the only company that figured out how to separate out the different sections in order to identify where the leak actually was. They found that it was in the evaporator coil in my attic. This means that the job will be $3700 instead of $11,000 and we won't have to bother my neighbors! I haven't even had the job done yet and I'm already impressed! Strongly recommend these guys!

    thumb Benny S.

      Our heater stopped working yesterday. Henry responded very quickly and came fix the issue this morning. He is very friendly and reliable.  He deserves a five star review.  Highly recommend

    thumb Tata T.
  •   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.

      Henri and his team were quite professional. Quote was close to the lowest we got, while work quality, punctuality, and customer service has been just fantastic.

    We had them install a three headed mini-split system for us about 6 months ago, and the system has been working flawlessly.

    thumb Mani M.

      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.
  •   I was able to get a same day appointment for service on our heater. Henry Elia was able to stop by sooner than the afternoon appointment time, so they called and verified the soon time was okay. Henry found the problem quickly and then offered repair options. He suggested the option that was the least expensive, but still effective, even though it meant a return visit with purchased parts would not be needed. Bottom line is that he recommended a solution that was a good choice for the customer but meant less money for him and the company.

    I'm very impressed with this customer first approach and the honesty that is required to provide that type of service.

    thumb Tom C.

      Yesterday my AC/heater started behaving all crazy, the fan would run continuously even after the thermostat turned off. I reached out to Therma Tech and was quickly set up with an 8-10am window for the next morning. Henry arrived this morning, well within the window, after an update came over text message to track his arrival time, a very neat feature. He proceeded to fix the issue within 2mins of being on site (there was a sneaky reset switch inside that had flipped) and wouldn't even take my money for the fix!

    To see this kind of generosity in these hard times really warmed my heart and I thank Henry for keeping my family warm during these cold months! Thank you for being a great human being and and giving exemplary service to your customers! I cannot recommend Therma Tech enough!

    thumb Andrew S.

      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.
  •   The tech that they sent out to help us work on our system clearly did not have a good understanding of heat and air-conditioning systems. He claimed that our wiring was faulty and asked us to call electrician. After having an electrician and another HVAC company look at the system, it was determined that the issue was simply a swapped wire. Thankfully Thermo tech waived their consultation fee, but they left our furnace with wires disconnected. I would be careful trust in this company to work on my home equipment

    thumb Michael V.

      Therma Tech is the most reliable HAVC I have consulted. Henry came for free quote of a brand new AC almost immediately after we texted him. He checked the environment and current facilities and then explained his professional thoughts about the project, what must to do and, what better to do, what optional to do and told us all processes of city permit, which means quote includes city permit and HERS testing. We have consulted more than three HVAC companies and Henry is the most honest and professional one so that we referred him to our friends even our project was not finished. Our new AC project should be very simple to install in the very beginning, however, it took more time than our expectation to get the city permit because of covid and our old outdated furnace infrastructure. Henry, his team, and his staffs were all patient and proactive to follow up every defects that city inspector pointed out (all about furnace rather than AC.) Thank god we have Therma tech. Strongly recommend!

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

    thumb R S.

      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.

Call now

Sorry, no special offers at the  moment