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.
San Jose Air Conditioning service van



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.


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Professional Staff

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

  •   I've never encountered such amazing and kind service! It's 106 today and our AC broke. We are beyond hot.  Everyone I called said they couldn't come out for at least a week and we have many more hot days ahead of us.  I left a message for Therma Tech and received a call back within an hour.  Henry said he would come by on his way home after his current service call and see what's going on. He came by about an hour later and within 5 minutes fixed the issue!  He said it was an easy fix so he didn't even charge me!!! Can you believe it? He also explained to me what I can do if it happens again.  Such a good, decent person. Wish I had called him 5 years ago when I installed AC.  No question, going forward I will always call Therma Tech and you should, too!

    thumb Amy W.

      Technician came out very quickly even in the middle of high demand. Our system was knocked out by a power surge - no display on the thermostat. I had tried the reset procedure with no improvement. Technician took one look at this and said it was likely the low voltage transformer.  He then checked that and it was blown. He put a new one in and the A/C is back on.  Perfect!

    thumb Brooks B.

      These guys are great. Heater was acting up. Took a while to get them out, but it is busy season so very understandable. Quick to call back and great communication prior to the visit. Fast diagnosis and very fair/ helpful. I would not hesitate to refer them or call again.

    thumb Doug H.
  •   Just had AC installed last week by Therma Tech. The job was done quickly and professionally. Henry and his crew are very responsive and very knowledgeable.

    thumb Geoff S.

      Professional, courteous. Showed up on time and got the job done. Replaced a blower motor and capacitor in my Carrier system.

    thumb B G.

      Great services from Henry and his team.  They came and gave me free estimate and were  honest about what went wrong with my heating system without any expectations  of trying to sell their services.  When I made the decision to use Henry's company, they came right away and replaced a new furnace because the house was super freezing without heat.  Highly recommend Therma Tech and ask for Henry. Thank you all again for  being so prompt about everything!

    thumb Mary N.
  •   We worked with Therma tech to install a new A/C unit. We found them to be extremely professional and courteous. They responded to our inquiry quickly, understood our needs, and had a new a/c installed within a week. After installation, when we noticed the unit making a lot of noise, they came back promptly and installed additional ducts which completely solved the noise issue. They refused to charge extra for the additional work and all the extra ducts.

    thumb Pendar Y.

      Best experience in customer service . Henry and Barsin are amazing, very courteous, always smiling and ready to do the best.

    thumb Sunil P.

      I originally had Therma Tech install air conditioning at my condo back in April 2019. The coiler sits on top of our heater and since the heater was so old it also needed to be replaced. Henry was very responsive in helping to work with my HOA on the approvals. His price was also very competitive against other vendors I had contacted. His team was very fast and efficient in installing and verifying that it was functioning correctly. A few days after the installation our hot water stopped working. Their team was working next to the water heater during the installation and so I contacted Therma Tech and they immediately sent someone out to check on it. It turned out the pilot just went out. They treated it as a courtesy visit and didn't charge for it. Now that it's winter (Dec 2019) I tried to turn on the heater for the first time since installation and it wasn't turning on or staying on. Again I called Therma Tech and they sent someone out same day to take a look. Turns out our filter was already full of pet hair and wasn't letting the vent pull the air in. The filter was replaced and is now working perfectly. Again Therma Tech treated it as a courtesy visit and didn't charge for it. I am amazed by how wonderful their customer service is. Would highly recommend for anyone looking for Air/Heating at great prices with excellent service!

    thumb Kristen K.
  •   Henry and his team did a terrific job scheduling us in and replacing our HVAC system.
    He is consultative, informative, price conscious, reliable, and a pleasure to work with.
    His installation team was amazing. They took great care in their work and were very nice and equally informative when I asked questions.
    Highly recommend Therma Tech!

    thumb Paul M.

      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.

    thumb Argi A.

      Our AC went out last week, and I know we needed to upgrade both that and the furnace unit. I called ThermaTech and was contacted almost immediately, and Henry came out a couple days later. He was even early to our appointment. Henry was extremely informative and professional. I am waiting to get one more bid just to do my due diligence, but I am pretty sure we are going to go with ThermaTech.

    thumb Dave G.
  •   I have a room in my house that always runs hot even with the AC on full blast. It can be Antarctica in the other bedrooms, but that one little room is a sauna. It also happens to be the room I rent out, so it's a big problem.

    I called Thema tech, and they had someone come and check it out for free. He climbed up into the ceiling to take a look, and explained what was going on. The vent in that room was smaller, and it was ducted in a way that it wasn't getting much airflow. He gave me a reasonable quote for re-ducting the house, but also recommended that I consider other options such as a fan.

    I really appreciated that they were willing to give me the best solution, even if it meant not getting my business. The fact that the diagnosis was free is a huge plus.

    If I ever decide to move forward with re-ducting, I will definitely call Therma Tech.

    (Tip: call them soon if you're thinking of having them come out to your house, since they do get booked up!)

    thumb Sara Lynn H.

      I received an estimate for an HVAC system replacement from Therma Tech. The estimate was $11,000 for a 2 ton system replacement which was $2500 more than the highest of 3 other estimates I received from other 5 star on Yelp HVAC companies. The estimate was hand written and didn't include the details of the other estimates I received such as the make and model of the replacement system or the break down of costs. Maybe they do good work but the price is too high.

    thumb Rich G.

      Therma Tech got us in their schedule ASAP.  Upon arrival they quickly assessed and solved our A/C leakage issue with a very efficient solution, and suggested some very useful tips for DIY-ers like myself.  Will certainly use them again, thanks!

    thumb Jeff C.
  •   Two days ago, a solar company installer made a mistake while doing the electrical wiring, and overloaded several circuits in my house.  We later discovered the furnace was no longer working.  Very bad timing as the weather had become colder and here we are, senior citizens, sheltered in place during this Covid crisis, trying to avoid getting sick and now our house feels like an igloo.  I started calling around and John, at Global Heating & Cooling, wasn't available but referred me to his friend Henry, at Therma Tech, who I called next.  He answered immediately and said he was available.  He set up an appointment for a few hours later, showed up on time (wearing a mask and gloves, which was considerate under the circumstances and I appreciated that), and quickly diagnosed the problem -- needed to replace the transformer.  I had mentioned that I would be asking the solar company to reimburse me for having to fix this problem that they caused, so Henry said that they, the solar company, would be able to replace that transformer if I wanted to wait and have them to do it.  Yes -- think about THAT for a second -- possibly against his own interest, he gave me an option I would have been unaware of!  Not a lot of businesses would do that.  He quoted me his price, which I felt was very reasonable, and we wanted our heat back on immediately, so we opted to have him do the repair right away.  Took him less than a half hour and it was all fixed.  His office also has a very quick and efficient system of appointment notification and invoicing, so the whole experience was smooth and easy.  No wonder he gets so many five-star reviews.  It's all about providing great, reliable service.  Thanks again, Henry ... you saved the day!

    thumb Jeff G.

      Henry Elia/THERMA TECH is AMAZING!
    Here is my story:
    - Our AC died. A different HVAC company diagnosed it as not fixable, and charged us "diagnosis fee".
    - Called THERMA TECH for cost estimate of a new AC system installation.
    - Henry came. He first looked at the old AC. He checked the wire connections, did whatever "magic", and the old AC started working!
    - Instead of selling us an expensive new AC, he said, "Your problem is solved! Call me if any problem."
    - NO charge!
    - None of the other sales people looked at the old system. They just wrote new estimates!
    - I found out that Henry is the owner of the company! I see how he built this business: Honestly. By treating client's money as he would treat own money!
    - I know that I will go to only Therma Tech in future!
    - If only all service companies were this good......!

    thumb A Z.

      We got extremely lucky! I called and Henry was literally at our house within 5 minutes. He came in diagnosed the problem, had the part in his van, replaced it and off he went. Great service friendly technician. Made some recommendations for upgrades but didn't do a hard sell. Will recommend. 5 stars all the way!

    thumb Elliot P.
  •   I had an EXCELLENT experience with Therma Tech -- and have to add another rave review to the many already here.  My A/C went out during the heat wave this week, and I decided to call Therma Tech based on all the enthusiastic reviews.   First, Christine from their office returned my call within about 10 minutes -- which is amazing -- and she was super-nice and friendly.  She was able to schedule me with Henry for the same day.  Henry arrived right on time, immediately diagnosed the problem, and clearly explained the solution.  He had the right parts on his truck, and had everything installed and working again super-fast.    Henry was not only knowledgeable and professional, but also very friendly and just a great guy.   Highly recommended!!!

    thumb Deborah W.

      I am very pleased with my experience with Therma Tech.  

    They came out promptly to give me an estimate on replacing both the furnace and AC unit.  The estimator was honest and straightforward with me, letting me down gently when he said I'd have to replace both units.  The price quoted was very competitive.

    They managed to schedule the work for the following week, despite being during one of the hotter spells during the summer.  The technicians who did the work were prompt, polite, and very efficient.  Two techs took one day to install both units.

    A couple of small hiccups during the city's first inspection, which they fixed almost immediately.  For the second inspection, Therma Tech co-ordinated schedules to send a tech out to talk on the spot with the city inspector and the work passed.

    It doesn't get much better than this.

    thumb Dave J.

      I called and made an appointment the same day. Henry stop by checking unit. He provided profession suggestion, and answered all questions regarding maintenance and replacement. Awesome service!

    thumb Zhuohui T.
  •   Professional and courteous service. They came out to my place twice, and were always on time as scheduled.

    thumb Minera F.

      I've had Therma Tech out to my house a couple times in the last couple years to service my old AC unit. They tell it like it is and fix it like it should be at a good price. When I have to get my AC repaired or replaced, I call Therma Tech.

    thumb Peter C.

      My AC went out this week and it was hard finding someone to fix it.  I called at 10am and Henry came out at 1:45pm... fixed by 2pm!  He immediately knew what was wrong.. I honestly felt dumb.  Lol.  Awesome service and definitely would use again.  Thanks to the Therma Tech team for getting it running again.

    thumb Mike T.
  •   Give Henry ten stars.  He not only came out on a Saturday, he did so within an hour of my call.  I'd just been given a $9000 estimate from another AC repair company, and was in a state of shock.  I told Henry all the other guys had said, including their assessment that I would have to replace the capacitor and most of a five-year-old system.  Within a few minutes he'd ascertained that the breaker had switched off, and then started up the fan.  He also replaced a small part.  Then he refused to take any money.  "For what?" he asked.  He acknowledged the system had some years on it and would need to be replaced, but not yet.  He again refused to take any money.  I deeply appreciate Henry's honesty and quick attendance to my problem.  I don't think I've encountered a more intelligent and honest businessman.

    thumb Jeff H.

      I really appreciate the quick and professional response! My AC was blowing warm air, I checked the filter and it was dirty, but removing it didn't fix the problem, so I called Therma Tech (top rated local company on yelp!). They offered to come out the same day, but my schedule didn't allow so we set up the appointment for the following day (Friday) in the afternoon. They called to confirm on Friday morning and arrived 10 mins ahead of schedule.

    As suspected, the Freon (R22) was low on the unit. It took 4 lbs! which was pretty expensive at $100/lb, but a few minutes later the system was blowing cold air again. I hope the system doesn't have a big leak, there's really no way to tell. The tech gave me a list of options before doing the repair and showed me the scale and pressure readings since I was interested... I appreciate that too!

    Thanks again for a quick and painless service!

    thumb Richard S.

    Henry is the most knowledgeable and brilliant technician I have ever used. I can't recommend highly enough. Diagnosed and gave me all the options I needed, then completed the work in 15 minutes. And if that's not enough, an extremely generous bill. Thank you so much. You are my HVAC guy for life!

    thumb Roy N.
  •   We had ducting work done by them today. Impressive work and professional crew. This co knows their trade and were very easy to work with. The crawl space was tight and it was not easy but the technician Chris did not complain. He was polite, detailed and thorough inspite of a long day and subsequent commute. We were in a time crunch and they could have seized the opportunity but the quote was consistent with no tacky add-on fees.

    I highly recommend Thera Tech and will be using them for all our future HVAC needs.

    thumb Lynette V.

      Same ol' story - heater fails, my usual team is suddenly unreliable, hit Yelp for multiple quotes and to talk to the owners and techs. Prices don't usually vary too much but the conversation allows me to determine who is easy to work with. I made a great choice with Henry - the man is upfront, concise, and friendly. We agree to terms, set the date to start and sign the contract.

    Then we hit out first hiccup - the techs scheduled for my day get the flu (not that one). Bad sign. This is usually where a lesser company would fail, make excuses, be defensive, and push our schedule so far out to summer I may as well buy winter coats (for CA, right?).

    Luckily, I got Vicki - Henry's super office do-it-all - who owned the situation, quickly setup a new appointment, and kept me in the loop so often I began to feel she cared more about us getting heat than I did.

    The job was completely with excellence, care, and speed. Impossible to ask for more. I already have this team up for another heating situation on another home. It's the start of a great new relationship.

    Thank you Henry, Vicki, and your staff.

    On to the next job.

    thumb Matt L.

      My 24 year old furnace started acting up late last week so I called these guys to come check it out. The first tech sent out determined it was a filter issue so I replaced it with a new one, but it was still having the same problems. Another new tech was sent out to me Friday and determined it was the gas valve switch and a loose fan. Said they could order the parts but as it was an old unit and the company was out of business, I decided to just order a new one.

    They ordered a new one right away on the Friday afternoon; Monday (today) they came and replaced the whole thing and added new insulation and a new wooden base. The 2 guys doing the installation were very polite and extremely efficient in their work! Left no mess behind at all and kept my hardwood floors scratch-free (bonus!). My new furnace is amazing and I'm SO grateful to have proper heat again!

    Most definitely recommend these folks, they really did an outstanding job! Thank you!!

    thumb Nathalie B.
Therma Tech Inc
Based on 22 reviews
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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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