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.

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

    thumb Jim K.

      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.

      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 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.

      Once again, Henry was amazing. Our AC stopped working at the worst possible time, and within an hour of me calling and requesting someone to come out, Henry was here. He is very friendly and is very knowledgeable about what he is doing. I would highly recommend Henry to anyone who needs assistance with their heating/cooling!

    thumb Nina A.

      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.
  •   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.

      Can yelp please create a 10 star button!! Omg, let me just start by saying that just calling in and scheduling someone to come out was an ease. Vicky was on point with full all around best customer service ever, she tried to work with me on scheduling even though they were so booked up (I can see why!!). She was able to get someone out the very next day. Henry, came out right on time, and I kid you not, being the expert that Henry is, he was able to troubleshoot our issue in less than 5 minutes!!  I came back out after turning on the AC unit, which wasn't blowing out cold air, and my husband was saying bye to Henry! You can't beat this kind of service! Booked mark for all my future AC/heater needs!! Thank you Vicky and Henry as I'm sitting here in my office room with cold air 🙂 !!!!!

    thumb Nena L.

      Wow!  Had a fantastic experience with Therma Tech.  From the moment we called them, they were responsive, helpful, and speedy!  Our a/c stopped working last night... Henry was here this morning, checked it out, diagnosed the issue and got it all fixed in one go.  Very impressed and would highly recommend them.  (In addition, the call out price was one of the most reasonable we found, and the cost of that gets deducted from the work that gets done!)

    thumb alison s.
  •   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.

      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.

      5 stars to Vicky and Henry!  Our AC went out last night and they decided to be open today due to the heat on a Saturday.  We had no cool air blowing, just room temp. Our capacitor needed to be replaced.  We now have lovely cool air again!  Very responsive!  Seriously from call to fix was maybe 30 min max.  Many, many thanks!

    thumb Julie G.
  •   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.

      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.

      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.
  •   had AC installed, two ducts added and the old furnace replaced in a house built in 1907.  this outfit is unusually good!  they stand behind their work.  nailed the city inspection/permit first go round.  Thank you, Henry, Vicky, and crew.

    thumb David N.

      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.

      Henry was so quick and efficient! I called at 7:30am and he was here within an hour. He found the problem and fixed right away. Extremely happy with the service we received. Thank you!

    thumb Lexi W.
  •   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.

      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.
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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