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.



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.


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!

Professional Staff

Reliable, trustworthy, knowledgable and committed


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

  •   Very professional staff, including the dispatcher, Vicky, and technician, Henry. The dispatcher was extremely friendly, and confirmed the appointment by both email and text a few days before the appointment . On they the morning of the appointment, the dispatcher had asked if they could arrive even earlier than expected, which was a good thing for my schedule. The technician, was extremely knowledgeable & honest. He fixed the problem in a matter of minutes, as well as explained why the furnace was malfunctioning. I would definitely use this company when it is time to actually replace my furnace. It is without reservation, that I would recommend this service company to others who need it

    thumb Jay B.

      My encounter started with a call to Vicky at their office and she was wonderful and refreshing.  Let me explain, Its 96 degrees in San Jose, Ca.  My AC went out!  I was in NEED OF A FIX!  I knew places would be busy, so I planned on being told I would have to wait.  I was looking through YELP and I saw the reviews here and I was like okay lets try this place.   Vicky answered,  like I said, I was "expecting to be told it would be a day or two" but NO! She was so nice and patient with me and she surprised me by letting me know that there was a 1pm appointment that same day.  I was like WHOA!!! YES please.  She made the whole conversation and scheduling easy and I had even forgot that I was in a sweat box.  She even let me know that my tech was Henry and he was the owner, so not to worry.  She was just so personable, I really didn't even want to hang up the phone with her.  

    I received an email notification about the appointment, then a text notification letting me know when Henry was coming, YUP I could see the estimated time Henry would be here. That is way better than "UBER".  Sure enough the doorbell rings, the dogs bark, I grab my mask and open the door and there is Henry with his mask. I was delighted. I see he was social distancing, or I would have hugged him. He asked me to let him in the back yard to see the AC unit.

    Let me tell you something, Henry was very honest and I liked that.  He told me my unit is still under warranty and I CAN call them and they COULD come out to fix it for free, or he could fix it for a fee.  I was in a dilema.  But its HOT and Im too sweet to be in heat. SO I said FIX IT.  He did and he changed out my filter too.  I appreciated his sense of humor, help, professionalism and honesty.  Even though I paid it was money well spent and it was a great team that did the work.   Thank you.

    thumb Michelle A.

      Great team, careful, polite and clean. We just got a new AC and Heater installed. Arrived at 8:30am, done by 2:30pm. We got a few quotes, this company and owner seemed the most honest and knowledgeable. We'll hire them going forward.

    thumb Melinda B.
  •   Excellent customer service and professional service repair. Alin knew exactly what was wrong with our ac unit. Worked fast, safely and had honesty and integrity. I will definitely be contacting  agin for future heating and cooling needs.

    thumb Heather M.

      Henry came out on very short notice and found the problem right away.  It was a clogged drain pipe for our HVAC coil.  That's not in his area of expertise, so he didn't charge us (pretty cool).  Really, I wish I could have tipped him to show my appreciation.  I will definitely be looking for him for future HVAC problems.

    thumb John E.

      Loved how Vicky kept her promise to hook me up with Henry, the boss. They have a pretty good scheduling system via email and SMS. Henry is nice enough to give me a run down of what diagnosis he'll perform and how much each procedure costs and oh, he won't push you to install a new system. This guy is just as good as DG, but I ended up not to go with Therma Tech  due to the timing. I definitely encourage ppl to give them a call.

    thumb Lou T.
  •   The good, the bad and the great in using YELP and Therma Tech:  I don't have furnace problems very often, therefore when I do, I go to YELP to search for possible contractors.  I like to select possible contractors who have a 4 to 5 star rating and also contractors who will provide a "free estimate" for my job.  However, what I learned is that just because a YELP contractor has a high star rating and is willing to provide a free estimate does NOT guarantee a fair price for my job.  My first YELP 5 star contractor arrived at my home on time, and gave me 3 free estimates between $1,300 and and $4,500 to repair my furnace. [Tip 1: after getting the estimates, always ask about how long will it take to do the job?]  In this case. the contractor said it would take between 30 minutes to 1 hour.  [Tip 2:  does it seem reasonable to pay $1,400 for 30 minutes of work and replacing only 2 inexpensive parts, a capacitor and motor?]  Time to call Therma Tech who does not give a free estimate but was willing to give me 2 quotes over the phone and apply the cost of estimate if they came to my home to do the work.  I gave Henry a description of the problem over the phone and he gave me his opinion and estimate for replacing each of the two parts that could be causing the problem.  [Tip 3:  Be prepared to explain what is the situation with you furnace.  Don't just say it is broken!]  Henry identified the two parts and gave me an estimate on the phone for each part.  His estimates were LESS than 75% of the quotes received from the first contractor!  I gave the go ahead and Henry showed up in 20 minutes, inspected my furnace, and gave me a revised quote that was $200 LESS than what he had quoted on the phone!  I gratefully accepted; furnace was operational in less than 15 minutes and Henry was ready to go home.  I had a big smile on my face when I gave a check to Henry for less than $200 and I once again had a warm home.  [Tip 3:  be willing to spend some time and effort to get more than only 1 quote especially if the first quote seems unreasonable to you.]  Needless to say, I highly recommend Henry and Therma Tech; in fact my son will be calling him next week to check their furnace.  What a happy ending to Thanksgiving, hope you enjoy my story, Joe.

    thumb Joe G.

      My air conditioning went down. My usual HVAC Service came out and topped off the puron. They said there was probably a leak. We're in the middle of a serious heat wave and they said it would take them FOUR days to check out the leak and that they couldn't get to it for a WEEK. Totally unacceptable.
    I called Therma Tech on a Sunday morning. Henry came out checked the Compressor and it appeared to be ok. Then he went into the attic and found a big visible leak in the coil. He said during this Covid thing he had purchased parts for so he could repair customers HVAC when Covid had shut factories down. He had a replacement coil in stock. A day later Mark and Adrian installed the coil and my air conditioning started working perfectly. I couldn't be more satisfied. Henry saved me over $6,000 by only replacing what was needed. During the heat wave I was willing to replacing everything. I found these people to be honest, clean, accommodating, and thorough. If I could give them more than 5 stars I would. I will certainly be giving them my future business and I will recommend them to my friends. A+++ job!

    thumb Reed A.

      My furnace stop working and I called Therma based on the review. I am an engineer too. I am willing to pay for the expertise I do not obtain but really dislike any drama happening. I would say they are really professional. The technician comes in the do some testing step by step and my furnace is working in 10 minutes. That is what truly engineering is !
    I definitely recommend Therma and will call them if anything happen in the future

    thumb ZY123 G.
  •   Very happy with my service from Henry of Therma Tech. Responsive and thorough. Will definitely use them again.

    thumb K V L.

      We used Therma Tech a year ago. Because we were impressed with their fast response, service, professionalism, quality, I decided to contact them again for another need. This time it was for our air conditioning unit. Henry quickly responded to my inquiry and triaged my A/C the next day. That was Tuesday. They ordered a new part and had it fixed on Monday!  (I was expecting the part to take a week or two.) They even came early to repair it and had it repaired 15 minutes before 1p (they were scheduled to arrive bet 1-3p).  I highly recommend using the Yelp app to contact them for best service. If you need your AC or heating unit checked, please contact ThermaTech!

    thumb Luisa L.

      I researched and received quotes from a few HVAC companies before going with Therma Tech. I went with them because they gave me options to what I was looking for AND they were responsive to my calls/questions. I had a new furnace and AC unit installed and this team is great. Henry, Vicky, Chris and his team were all professional and worked with me throughout the entire process. Chris and his team finished on time and cleaned up afterward. This team made this process easy for me. Much appreciated.

    thumb Amanda C.
  •   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.

      Henry with Therma Tech showed up to troubleshoot why my blower motor wasn't working at 8:30am and was done by 8:50am.  He was knowledgeable and efficient.  Turns out the flux capacitor failed and needed to be replaced.  Lol

    thumb Dennis B.

      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.
  •   We had to have our old Ac and furnace replaced and after searching on yelp I decided to contact Henry with Therma Tech. He came out the very same day to look things over and gave us a diagnosis. He was very knowledgeable and honest about what was going on...I was impressed and felt comfortable giving him the job.

    We are extremely pleased with the work that Henry and his crew (Chris and Leo) did. They were super knowledgeable, friendly and true professionals.

    Thank you so much...you guys are awesome!
    I highly recommend Therma Tech.

    thumb Hedda A.

      Okay, my mantra is if you can't say anything good, don't say it at all (meaning don't throw others under the bus). Henry from Therma Tech SAVED our family from throwing away thousands of dollars on something that was never even broken to begin with. Honest to God, just when you feel you're at the mercy of all the techies who know their _hit, an actual honest, solid, good person comes along and tells you exactly what's wrong with your AC unit, and does so humbly. God Bless you Therma Tech. In today's current upside world (COVID, etc) you restored our faith in humanity. Thank you doesn't seem enough, so anyone out there wondering who does honest work, read this. They will be our forever "go to guys" for times of direct, honest help when things like our AC go awry. Thank you, thank you, thank you Therma Tech & Henry (award for outstanding citizen)! 🙂 🙂 🙂 Happy Happy and Grateful Campers, Andy Peterson and Anne Palmer, Saratoga, CA
    PS: That's the other thing...most folks see your zip code & assume they can fool you (which sadly we are easily fooled as we don't know anything electrical, plumbing-wise, etc), and we often get taken for a ride with our already empty bank account.
    NOT this crew. A diamond and a gem amongst a lot of fakes out there.

    thumb Anne P.

      To start my AC was not broken but needed a tune-up/ service after 10 years. I chose Therma Tech even though they were not local to me. Vicki is one of the most energetic voices i have heard for the sales and scheduling staff. Very quick and to the point. Just as i thought it cant get  better, my service all was answered by Henry.

    My service was done in a jiffy and since nothing was wrong, Henry ran my AC  temperatures, charged the unit and did a complete health check.
    Again prompt, professional, knowledgeable and at the end he did not charge me as there was no repair involved.

    ThermaTech is a permanent entry in my to-go list now. i could not be flattered more by the sheer professionalism and honestly.

    Thanks Henry for coming over and Vicki for getting him to me!

    thumb s k.
  •   I have never experienced this level of customer service. Beyond exceptional!!!
    Henry was at my house in less than 2 hours from my frantic call, on a Sunday no less, with temps forecast to reach 107.
    He had the A/C working in a matter of minutes... my hero!

    thumb Nancy F.

      Best customer service!!

    Our A/C broke down the beginning of summer. I had a consultation from another A/C service company who had already charged me $175 for 5mins of consultation and lot of upselling and to buy a new A/C unit.

    I called Therma Tech for second opinion. They were able to accommodate me for consultation at short notice.

    Henry was on time and provided expert opinion without any upselling. In my case, it was indeed old broken A/C that would need replacement. But Henry didn't charge me for that quick visit.
    He would get my repeat service because I didn't feel like it was rip off to pay hundreds of dollars for a quick assessment, also he was honest and didn't try to gouge me with too many service subscriptions.

    thumb Prakash M.

      1 day before moving out, I saw water dripping from my AC Coil Tray. Called several companies and only Therma Tech was available to come same day.
    I was quoted $120 to come out for diagnosis (which would be waived if I hire them to fix the issue).
    The owner came out himself! Spent 10 minutes following the drain lines only to see the end of the line was not accessible.
    However there was an air vent. He blew into it and immediately cleared the clog. We could hear the water draining out. Leak stopped! AC still works, and he didn't charge me ANYTHING. My Hero!!

    thumb Doug H.
  •   This is a follow up to my previously posted review. I appreciate the owner's following up with my review. Although the problem with my A/C was a new one and not related to the part your company replaced, you insisted on compensating me an amount that was double the repair bill. This shows your sincerity and focus on customer satisfaction. I appreciate that. Since I still feel that you do not owe me this compensation, I donated it to a needy 3 year old girl who needs inner ear replacement operation in China. You can count it as your donation in spirit too. God bless

    thumb David N.

      Henry came out for servicing our AC. He checked and told us that only the filter needed changing. He changed the filter but didnt charge us anything for it even though we wanted to pay for the service. Really impressed !!

    thumb Krupa M.

      Henry was on time, very efficient, pleasant & honest. Highly recommend...used them before great company!

    thumb Dave O.
  •   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.

      We got an appointment with ThermaTech when the fan on our condenser stopped working.  My husband is fairly handy so we did some googling and he managed to get it fixed - or so we thought.  But it still wouldn't turn.  Henry came out and showed us that we just needed to throw a breaker to turn it back on.  Once we did that, it worked again.  Henry didn't charge us for the visit.  They were very flexible when we had to initially change the appointment date.  I would definitely recommend them.  So nice to have the AC up and running with this massive heat wave.

    thumb Linden S.

      Needed a service on our AC... Henry came out and apparently all was good.  He changed one filter and left.  Said no charge.  He was maybe there 15 min.  Honestly. He could have charged whatever amount and we would have paid it.  Talk about honest.  
    Def Call THERMA Tech. a mom n pop honest operation!!!!

    thumb Yolanda G.
  •   I really liked the service provided by thermitech. I got a quote for from a few different HVAC companies to replace our old furnace, AC, and ductwork with dual zone for upstairs and downstairs (about 30% less). Their price was very reasonable and much lower than the other offers I received. Other companies also wanted to charge extra for moving the vent positions within some of the bedrooms for optimal coverage. When I asked Henry about it, he said it was included in the cost because it was not much extra work to move the vents. The work was done quickly and professionally. Henry was also very responsive to my questions.

    About 6 months after the installation, we did unfortunately have an issue with a piece of third party equipment that had failed (pump). I contacted Thermotech and they responded promptly. Henry came out and fixed the issue under warranty.

    Henry and his company definitely old customer service highly and I would gladly recommend them to any of my friends and family.

    thumb Alex S.

      Between my family and I we have hired these guys 4 times already. We like how quickly they are able to come out for an evaluation (generally within a day or two), which is so important when you're freezing or sweating! Also, they seem very trustworthy and honest.
    #1- once he fixed my parents' AC, not sure what he did, but he said it didn't take long so didn't charge anything, not even a service call fee!
    #2- came out to evaluate my AC- unfortunately I had to replace the whole thing which cost 4 grand. They did it quickly though, provide a 10 year warranty, and things are still fine a year later
    #3- I called to ask for an evaluation since our heating bill was up the wazoo and I was worried there was a leak. Henry did a thorough check and offered some solutions but told me they were unlikely to help improve the efficiency of our heating. I appreciated his honesty and that he didn't convince me to pay money to have him do something that wouldn't help
    #4 - fixed my parents' AC right on the spot for 300 some dollars with some pieces he had in the car

    They are definitely our go to guys for heating or cooling problems!

    thumb Sharon H.

      This team is a solid team.  Good price, on time, honest and great attitude.

    Before I open the door to let Chris up the roof he already tried to use his ladder. He willing to listen and work closely with me during our maintenance !

    We will call them back very soon!

    thumb Sun L.
Therma Tech Inc
Based on 25 reviews
powered by Google
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
Next Reviews