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.

  •   Henry did an amazing job. Our AC wasn't blowing cool air but he was able to fix it in a timely matter. Originally, our appointment was scheduled in the afternoon, which is usually the time our house gets into warm uncomfortable temperatures. However, Henry was able to come in the morning. I was so relieved because I thought my baby would have another day of restless naps. I highly recommend this company because they're efficient, followed the masking protocols, and trustworthy.

    thumb Charlene C.

      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.

      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.
  •   Yet again, another piece of exceptional service!

    My AC stopped emitting cold air all of a sudden. Called them and Vicky was able to provide an appointment for the same day! I couldn't make it due to my conflict, so got the first appointment for the next day!

    Henry showed up, fixed the AC, in and out in under 10 minutes! Since the AC was under warranty (installed by Therma Tech), there was no cost to me!

    Yet again, extremely reliable company to work with!

    thumb Subhechhu S.

      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.
  •   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.

      I don't like to give a negative review especially since I watched them work at my neighbor's house where they did Excellent work installing AC to an existing furnace and assisting an Energy Company do an Energy Audit.

    That said I was willing to wait a few days for Henry to show up to ascertain why my AC wasn't working.

    Henry was able to get the AC to work at the furnace. He diagnosed a broken conductor in the cable between the wall thermostat and the attic furnace and suggested I contact an Electrician to rewire the thermostat.

    After Henry left I noticed an extra conductor in the thermostat cable which could have been used???

    Taking two trips into the attic and a twisted nerve I was able to replace the cable.
    In checking the old cable I found that all of the conductors in the cable were fine???

    Needless to say I felt I needed to contact another HVAC company.  I was able to get a referral from an neighbor and they responded the next day.

    The HVAC Technician used the new cable and rewired my thermostat and rewired the furnace by removing all of the conductors on the terminals and starting over.

    The HVAC Technician was able to get the AC working again.  Heat and AC working fine now.

    Unfortunately, no real cause found for the AC not working.

    thumb James R.

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

    thumb Dave O.

      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.

      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.
  •   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.

      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.

      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.
  •   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.

      Therma Tech was amazing from A - Z! It's rare you find a company nowadays that genuinely cares and does not try to upsell you. AC unit was not blowing cold and Henry came through to fix it in record timing. He's very respectful and wore a mask throughout the entire ordeal. I'll be a for sure returning customer. Highly recommend you choose them, you won't regret it one bit.

    thumb Kevin C.

      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.
  •   This team is top notch. Experienced foreman, energetic team and great customer attitude. I am very delighted that they have a schedule for me!

    3 and half days non stop installation of a mini split system with more than
    9 people there from two teams at one point.

    90%  done, now we just have to wait for a Cupertino city inspector!

    thumb Sun L.

      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.
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
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