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.

  •   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.

      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.
  •   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.

      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.

      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'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.

      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.

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

    thumb Jim 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.

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

    thumb R S.

      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.

      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.
  •   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.

      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.

      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.
  •   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.

      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.
Therma Tech Inc
Based on 27 reviews
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Gabriel Martinez
Gabriel Martinez
14:15 25 Aug 21
Henry and his team are very professional & real experts. They get things done in a timely manner.
Walt Greuel
Walt Greuel
21:09 16 Aug 21
Great Customer Service 5 years ago Therma-Tech replaced my furnace unit and installed an AC system. They were not the... cheapest but reasonable and did an excellent job. Recently the outdoor AC unit was making funny noises so I called them and they came out in a reasonable time. It turned out to be a loose screen, the tech fixed the noise, check the coolant charge and replaced the furnace filter all under the 10 year warranty and at no charge.read more
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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