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.

  •   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.

      I called to see if I could get a HVAC maintenance person to come out and they were booked a week out. Vickie who answered the phone took me through a list of questions to see if there was something I could do on my end to troubleshoot the problem. After she exhausted the list she asked me for my number and said she would call within an hour to see if there was anything she could do. She called me bach within 15 minutes and said she was able to get Henry (owner of co.) To come out within 2-3 hrs.. When Henry showed up he was wearing a mask and gloves. Henry asked me a few questions, went around the house into the basement to complete a diagnostic test. He discovered the issue, told me the cost for the part and told me I could get it cheaper and how much I would save. I told him to go ahead and fix our HVAC. Henry was very efficient (entire job 15 mins.), knowledgeable, and professional.
    He also looked at the entire unit and reviewed some additional items, up to including the age of our HVAC, how long they last, and the cost of a replacement.
    I highly recommend Therma Tech.

    thumb Chris A.

      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.
  •   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.

      I've used these folks several times, and their service is always great. One time they came out, looked at my system, and said I didn't need anything. No change!  How honest is that. Highly recommended.

    thumb Michael Y.

      When our heating stopped working in December, I called several HVAC repair companies. Most did not call us back, and many of them did not have availability for several weeks. Therma Tech was the exception. Therma Tech responded quickly, and was able to come out that same day! They were prompt, professional, competitively priced, and fixed our issue quickly. We will definitely be using them again. Thank you!

    thumb Christi Z.
  •   They showed up on time, found the problem quickly and had our heater up and running in less than a half hour. This was a 2nd diagnosis as another company looked at it 4 days earlier and said to not use it until they replaced a part that wasn't due to arrive until after Christmas. Being 53 degrees in the house we decided to get a second opinion and Therma tech came out within a few days of calling. Will definitely be contacting Therma Tech with any other problems or when it's time to replace our  current unit. We would highly recommend using them from this experience.

    thumb Katie H.

      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.

      My heater went out and they were able to come out and fix it quickly. I appreciated that they applied the cost of the inspection as a credit to the repairs.

    thumb Jonah M.
  •   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.
Therma Tech Inc
Based on 25 reviews
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Michael Huang
Michael Huang
20:46 07 Jan 21
Fair pricing, quick service, nice, friendly, always willing to help. My furnace stopped working and started showing... pressure switch issues around Christmas. First, Therma Tech listened to my issue description and gave me a few tips (replacing the filter and resetting the furnace) on the phone. After a new filter, my furnace was still showing the pressure switch did not close or reopened LED, so I had to get the professionals involved. Henry came to my house, inspected the furnace very thoroughly, and explained to me (I know nothing about the furnance) what was happening. He took apart my furnace, cleaned up all the parts, and then my furnace was fixed! 10/10 would recommendread more
Dave Chun
Dave Chun
21:20 09 Nov 20
My furnace stopped blowing warm air in our house on a cold day in November. This unfortunately occurred on Saturday... evening, and the lows that night were in the 40s. The next morning my house was 60 degrees and we were shivering in the house! I called Therma Tech on Monday morning when they opened and they were able to come out the same day! He spent 15 minutes diagnosing the problem and fixed it right away! Amazing service and super knowledgeable. Highly recommend!read more
Sherri Kuykendall
Sherri Kuykendall
16:14 19 Aug 20
They showed up fast and diagnosed the problem. And had us up and running. I am so pleased!!!
Kevin Cooper
Kevin Cooper
21:12 08 May 20
Henry came out the day I called during the Covid-19 crisis and got me taken care of.
Omar Castro
Omar Castro
23:47 26 Aug 19
Faster cheaper better more reliable
Arghavan Arjmand
Arghavan Arjmand
18:44 13 Jul 19
I called thermatech on a Friday and Henry have us an appointment for Saturday. He diagnosed the issue with our AC right... away, fixed it in a couple of minutes and for a reasonable price. He also gave us advice for the future on our system and regarding city codes. Overall a quite pleasant experience. Will definitely go to him again if we have any other issues.read more
wilbert jabraeili
wilbert jabraeili
21:22 03 Jul 19
Professional, reasonable price and great support. Best HVAC contractor
Milan REG
Milan REG
19:30 09 May 18
I have used Therma Tech service few times and also have referred them to other clients and friends. This company is... very responsive to callers and they focus on service vs. making money. They are very knowledgeable and do not leave the site without making sure that the problem has been resolved. Their rates are also very fair and reasonable. I highly recommend this company for all your HVAC needs. Thank you Henry!read more
Ilsin Baghdasarian
Ilsin Baghdasarian
03:57 06 Nov 14
I called them over the weekend for argent call, referred by my brother Emil who previously used them and the tech by... the name of Henry, showed on time as it was communicated. he was very detailed and checked the unit. Henry explained the issue and what he can do to fix it. He had the needed part in truck and was in and out within 2hrs. Henry was also very professional and appeared very clean. I will defiantly be using them next time and will recommend it to all my friends and family.read more
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