One year ago Qualtech replaced our fried attic furnace and did a great job. So when our 25 year old condenser and coils looked like they were near to the end, Qualtech replaced them. Omar, myrium, Sergio, Erik, Melissa...all wonderful. Communication great. Efficient on time installation. And the clean up was immaculate. I would recommend Qualtech without hesitation. read more

Wonderful experience with Qualtech! We had the ducts in our crawlspace replaced and had more air redirected to bedrooms. Our experience with the estimator Francisco was excellent. And then Sergio and Miguel came and did an excellent job on the replacement. The price was very reasonable, and the service people were swift, professional, and cleaned up the (very little!) mess that was made during this project. We highly recommend them! read more

The new AC unit was installed quickly in spring of 2023 which I appreciated. It is under the 2-year warranty, but now it is shorting out. A technician was sent to fix the issue on 4/17/2026. I'm thankful that he arrived less than 24 hours of my phone call. He diagnosed the problem and replaced the part in the same visit. But now it is 4/20/2026, and we are having the same problem again. It is already expensive even for labor. I don't know if it is comparable to the market for such services. I wish the diagnosis included the why the unit is having these electrical problems. Update: A experienced tech was sent to our home on 4/21 to diagnose the problem which was a loose wire. No charge. The technician was understanding and explained what was going on as well as checked the heating just in case there was a problem. I appreciate the time he took to throughly let us know what to expect. AC has a time delay as a safety feature for the compressor. It blinks "cool on" and takes time to turn on. If switching on and off, the time delay is extended. Praying all runs smoothly from now on. Btw, thank you for wearing shoe booties to keep the inside of my home clean! read more

Miguel and Sergio were at the house all day, working steadily and quietly. When they finished, our new furnace and AC unit were in and operational; they've been working perfectly since. They cleaned up the work area so well that when I went to vacuum an hour after they left, I got nothing. The work they did was professional, and manifested a high degree of workmanship. I mean, it was on the verge of being a thing of beauty. Qualtech has always been great. Super helpful and competent on the phone, extremely responsive. Erika, their scheduler and main point of contact for customers, is *extremely* capable, cheerful ... even fun. read more

We were referred to Qualtech by Mitsubishi. From planning, to site survey, contract, and installation, the service and sales from the Qualtech office staff and the crew was excellent. Everyone was very responsive. We replaced our 50+ year-old central forced-air gas furnace. They installed a 30k BTU Mitsubishi Mini Split heat pump with three zones and completely demoed and removed the old furnace (more space in the basement!). Our installers, Elijah and Eddie, were punctual and neat, even while cutting and framing three ceiling holes for the ceiling cassette units (we preferred these to the typical older-style wall mounted min-split units) and we had no errant dust in the house. Once complete the system worked perfectly without any issues, the workmanship was excellent. Thank you also to Daniel and Erika for our project, they really cared about us as customers. read more

Qualtech Heating & Cooling - Mitsubishi 18k BTU ceiling cassette - Heating & Air Conditioning/HVAC Near Me - Danville, California

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I don't usually write reviews, but our experience with Qualtech earned one. They installed a new heat pump and gas furnace system for us, and the whole thing was smooth and stress-free. What really stood out were the two technicians who did the install, Sergio and Eric. They were thorough, careful, and kept us in the loop the entire time, walking us through what they were doing and patiently answering every question we had. They clearly take pride in their work and treated our home with respect. Thank you both! If you go with Qualtech, you'll be in great hands. read more

am writing to follow up on the persistent issues with the HVAC system Qualtech installed approximately six years ago. I am requesting a resolution regarding what appears to be an improper initial installation that has led to recurring system failures. The following timeline details the ongoing problems: - 3-4 Years Post-Installation: The AC began blowing warm air. A technician found the refrigerant low and refilled it for $260. - Recent Visit: The system failed again. Your technician found the refrigerant completely depleted and quoted $1,500 solely for a leak detection test, excluding repairs. - Third-Party Inspection: I hired Service Champions, who performed a leak test for half the cost of your quote. They replaced a leaking Schrader valve but found no leaks in the AC unit, furnace, or liquid line. - Current Status: Despite the repair and refill, the system still fails to cool in hot weather. Service Champions returned and identified likely contaminants in the liquid line. Service Champions noted that the filter now requires replacement--necessitating a refrigerant recovery and line purge--which typically occurs if lines are not properly purged after brazing during the initial installation. While your installation warranty is only three years, Service Champions offers a lifetime warranty on their work. Had this system been installed correctly or backed by a similar guarantee, I would not have incurred these significant costs to diagnose an installation-related issue. read more

Absolutely amazing service top to bottom! Bar none the most professional and responsive company I have worked with on a house project. Daniel took the time to help me determine the right system for my house. He has clear and concise answers for every question, and helpful suggestions built off the goals of the project. The work was scheduled quickly, executed efficiently, and priced fairly. The entire process has headache free. Erika is really and truly the best! Long after the project's completion she was just as responsive and pleasant as day one, as we sorted through the terror of filing for rebates. I can't stress enough how wonderful she has been to work with! I don't mean this as a joke, she deserves a big fat raise. I would happily work with them again. Highly recommended! read more

We really love the mini splits that Qualtech Heating & Cooling installed in our bedroom and office. They work fantastic. Erika Thompson handled the project and did an excellent job managing all the logistics. She was always available whenever we reached out with questions, support, or paperwork, which made the entire process smooth and stress-free. The installation itself was quick and efficient. Willson and Josue arrived right on time, worked very carefully, and paid close attention to detail throughout the installation. They were professional and respectful, and they left everything exceptionally clean and well organized when the job was done, which we truly appreciated. We did experience a small bump with the city permit, which had nothing to do with the quality of the installation and more to do with extra city requirements. It was handled very professionally. Overall, Qualtech stands out among other companies for their knowledge and professionalism. We would absolutely recommend them. read more

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Awesome experience compared to any other HVAC in the area. They were thoroughly professional, on time and great value. Erika especially worked very hard to get our well-deserved heat pump rebate and team worked well to get everything done and the area was clean after the big install thru our master closet. Big Kudos to the entire team: our Consultant was Daniel, Project Coordinator Erika and our installation team was Elijah and Wilson. read more

A truly fantastic experience getting our Carrier new heat pump installed by Qualtech. What sets them apart is their dedication to customer service. Daniel was awesome in explaining all my options during first visit, Erika was very professional and handled all my questions after that. The installation crew was not only skilled but also extremely polite and professional. They showed up exactly when they said they would, and their focus on a quality installation was evident throughout the day. They worked quickly, and the work area was spotless when they left. The new unit is running quietly, and the difference in heating/cooling efficiency is already noticeable. If you are considering a heat pump, I would strongly recommend Qualtech, they are honest, knowledgeable, and make sure the job is done right. Thank you to the whole team! read more

Qualtech Heating and Cooling is outstanding!!! Super efficient, professional, fast, accurate, knowledgeable, fair prices. Really solid! Next day service too. Omar and Daniel, the techs, are wizards, very good at what they do... and... Erika, the scheduler, is professional, smart, and efficient. I highly recommend Qualtech Heating and Cooling. read more

I never spent so much time writing a review. But this time I really have to because I am quite upset with the whole situation. Be very careful with this company. The tech who came to service our AC unit was terrible. He only show up about 10 mins and left, charged me $125. He didn't bother to thoroughly check and inspect the AC unit. He said the wires were not hooked up. I told him that the previous tech intentionally did that for safety issue. Then he said, I need to charge you for hooking up the wires again. Without hooking up the wires and check to see what exactly was wrong, he said you need to replace the whole unit. I asked what is wrong he said it's the compressor issue. So I asked how much is the compressor he told me $5000. When I called into the office next day, he told the office woman that it cost $5000 just for the labor cost, does not include the compressor. I googled the cost for compressor and labor, it's around $1200 to $3000 the most!!! But for sure not $5000 just the labor cost, that is insane!!!!! I also asked about the warranty, he told me that they don't do warranty job for Carrier. But they actually are an authorized dealer for Carrier, did he lied about that so the client do not bother to call the factory and ask about the warranty? Don't ever trust this company, their techs are pretty bad. They do not do a thorough job, they want to charge a lot and they are not honest, don't trust them at all! In response to the manager Myriam/Owner, she called me right after I posted my review on yelp. She was very rude on the phone as well. As a manager, she should ask me what happen and try to understand the situation, but NO she was accusing me of everything, and said I already reported you to the Carrier factory about your case, that the wires were all disassembled and their tech was not able to hook it up and and diagnose the issue. She kept yelling on the phone and not allowing me to talk and try to explain the situation but keep saying that I reported your case to Carrier. His tech clearly told me that they don't deal with any warranty work! Why in the world would I want to make this up and lied about this???????? It doesn't help me in anyway! That was ignorant of her! I never talk to any manager like this before. Didn't bother to understand the whole situation with their client but accusing their client for everything! Horrible customer service! read more

We replaced our heating and AC this winter and have zero regrets. They gave us really competitive pricing and install was a breeze. They were efficient, clean, and know their appliances. From start to finish it was a great experience. read more

Elijah and Isaiah were terrific and did an excellent job cleaning air ducts. Myrium was friendly and helpful on the telephone.

QuallTech was recommended to us by a friend who was happy with their service. Daniel & Erika were excellent; they were very thorough & patient, they provided us with all of the answers to our many questions & spent as much time with us as we needed to make an informed decision without a hard sell. The installers; Antonio & Eddie were great, very professional. With all of the research & quotes, we are extremely happy with our new system & feel that we made the right choice in choosing QualTech. read more

After having had appts. with a few other companies (one whose quote was outrageously high, and the sales rep. from another company was condescending) I was so very pleased that I chose Qualtech to replace my entire HVAC system. From my very first contact with Erika who made all the arrangements, to the sales presentation with Daniel, and then the installation completion, everything went smoothly. My entire experience with this company was superb, and it was obvious that they take great panes to provide excellent customer service. I would highly recommend them for your HVAC needs. read more

Cleared out old ducts and installed a whole new central A/C system in 2021. Great work and attention to detail. System has worked beautifully for several years. read more

Service, quality, highly skilled service both on site and in the office, kind, expedient in an urgent situation, took great care of my home.

Qualtech replaced my dinosaur HVAC system with a shiny new heat pump and whole house fan. Dan provided a comprehensive quote and answered my questions and Erika was always on top of every administrative detail and patiently minitored the long process of me obtaining HEERA and Cleantech rebates which helped a lot with the cost. My system was intalled by Wilson and Erie very professionally -they made sure I had heat for the December install even though the install took more than a day. Very happy with the heat pump and whole house fan. Definitely reccomend Qualtech (and have already!) read more

Qualtech installed a wall mounted, split heat pump for us. Daniel came to our house to look at the project. He was very knowledgeable and friendly, and made some very good suggestions. The proposal was comprehensive and easy to understand. Elijah and Wilson were the techs who installed the system. They also were very good communicators and very knowledgeable. They worked through several obstacles, consulting with us as necessary, and we ended up with an excellent installation. They handled the whole thing including the electrical. The price was not cheap, but it was in line with the other contractors we looked at. We would recommend Qualtech to anyone. read more

I was having a problem with my thermostat. When I sent info out via the Yelp app, they responded right away and had a technichian come out within a few hours of my initial call. The technician, Omar, was very knowledgable and friendly. He diagnosed the problem and we had a new thermostat installed the next day. He even came back a couple of days later to fix a problem with the thermostat commiunicating with the furnace. I would highly reconmend Qualtech. read more

Daniel, the owner, is an honest and good man who was realistic about what I needed and even pushed back when I asked if I needed a higher efficiency. He made sure I had what I needed in the quote and nothing else. Very refreshing. Erika then took over all the organizing and was unbelievably helpful through the whole process. Always available and really nice to work with. For the install, Elijah and Antonio were amazing. They were polite, tidy and efficient. And when done they had done a fantastic job - everything looked great! And it passed the inspection first time. After the work was done Laurie was so helpful in ensuring all the scheduling was done for inspections, I had all the documents I need for taxes and that the grant paperwork was all processed. I wouldn't hesitate to recommend Qualtech. In a sea of many companies who try to oversell you - these are the honest brokers who just want to do the right work then do it well. read more

From start to finish, my experience with Qualtech Heating and Cooling was just great! Erika, Project Coordinator, made everything run so smoothly -- she was kind, smart, and incredibly accommodating. Daniel and Myriam,the owners, were both so knowledgeable and efficient, and you could tell they really care about their customers. The installation team -- Wilson and Josue-- did such a clean, professional job on my new mini-split. I'm so happy with the result and would recommend this company in a heartbeat! read more

Qualtech has always provided great service and quality installations. Prices were within industry standard.

Situation: family visiting from out of town, 105 degrees outside over July 4 holiday, AC is blowing hot air. Qualtech was able to schedule me for a visit within 24hrs, quickly identified the issue and repaired at a very fair price. The tech was very pleasant to work with. I love supporting local businesses! Way to go. Best~ Michele & Michele Hennigan read more

Qualtech Heating and Air Condition recently installed a dual zone mini split system for our home. I am very pleased with the service and installation. My initial contact with Erika was professional and informative. She was very knowledgeable of the products they have to offer along with the advantages or disadvantages of each. Then, Elijah and Erie came within a few days to make the installation of our system. They were polite, courteous, tidy, and efficient. They took the time to teach me how to use the remote controlled system, which I love. We've been able to use both the heating and air conditioning features and are very pleased with each. Several days after the initial installation, Omar came to our home to insure the system was working correctly and efficiently. I thought this extra component of our installation was very thoughtful. The employees we've had the pleasure to deal with are very professional yet personable in every way. I highly recommend this company......A+++. read more

We are pleased to give Elijah a great review. Elijah came to our house on 3/14/2025. His scope of work was to install a new inducer motor, duct, cleaning full system, seal all air ducts, vents, return and coil. He did a full duck sanitation, and reinsulate Y's. Over the last few months, we've had several contractors come to our house, and Elijah was the best by far in explaining what he was doing and the benefits from it. His workmanship completing the scope of work was excellent. read more

Qualtech did a great job! From the initial visit for an estimate on a heat pump system to installation of the Unit, it was pretty much seamless. Qualtech's customer service is excellent! Erika, Daniel, Wilson and Erie are fantastic! They all are experts in their areas of expertise. Erika and Daniel were both very informative and knowledgeable about the heat pump systems. They didn't hesitate to answer questions or concerns I had about the different Units I was considering. Wilson and Erie did a really nice job installing the new heat pump system! They did a great job removing our old 30+ year old HVAC system and cleaning up all the mess and debris caused from its removal. Kudos to Erika, Daniel, Wilson, and Erie! read more

Loved Qualtech. Daniel, the owner, came to our house to assess various cooling solutions for our home. He was thoughtful, thorough, and they offered competitive pricing. Erica was kind and on it with scheduling, and when Wilson and David came to install the mini split within a week, they were hardworking, professional, and quick! Would definitely hire again. read more

In the end we did not use Qualtech because our contractors Heating guy matched the Qualtech price. However working with Omar the technician was efficient and very helpful. Erika in the office was very prompt in all responses to queries. The price was lower than other estimates. Rich Walnut Creek read more

With kids and puppies who are heat-sensitive, a broken air conditioner on a week that was 100F-plus temps was considered an emergency. Qualtech was able to have someone come out the next day. I called over 5 places, and Qualtech responded the fastest. Francisco came out and worked on my unit. My A/C unit was old and needed replacement, but Francisco informed me of the various degrees of repairing it so that I could best evaluate what was best for my situation and budget. I don't think they are the lowest price but they are dependable, efficient and professional, which go a long way in my book when it comes to home service! I would use them again if I needed heating or A/C serviced. read more

Once again I am writing to compliment Qual Tech. Erica made sure I understood the new HVAC permit approval process, the energy rebate we would receive, the ReCon Energy [sp?] state mandated testing of our new HVAC system and the Rossmoor and Walnut Creek permit and inspection processes. I can't say enough about how caring the folks at Qual Tech are. And, it's my experience they also deliver incredible value due to the care they provide. I think there are many companies out there who install HVAC systems and maintain them. But, this level of service, and honesty, is remarkable. I think you can't go wrong choosing this company for your HVAC system and maintenance needs. BRAVO! read more

I echo some of the negative reviews. Qualtech installed the ac units on our house. We are the second owners. The capacitor burned out, and the wire was noted to have melted. Typically this is due to a loose connection, likely from qualtechs initial install. The tech denied this, and even though they were the original installers, they would not honor the original labor warranty, instead wanting to charge $300 for a repair that takes 5 minutes. They were also refusing to obtain the part through warranty, and trying to pass the cost on to us. I attempted to speak to their office manager about this but she was terse, and showed little empathy. We ended up finding a company which performed the repair at half the cost. I would not recommend qualtech for the following reasons: 1. Poor initial workmanship on the original install 2. They do not stand by their labor 3. Pricing is not transparent 4. Poor customer service at middle management level. Given the plethora of choices in the area it is probably worth going with another company. read more

Great customer service. They installed our A/C and we've had a great experience with them.

We had a fantastic experience with Daniel and his team at Qualtech. At first call, Erica helped us get an appointment for our estimate and was very knowledgeable with the Qualtech products and the process. We were greeted very kindly by Daniel who recommended the perfect system for our needs at an affordable price we could not refuse. Our 24 y/o system was replaced by Antonio and Wilson who came to install the new product. They showed up on time in the morning, worked throughout the day, very seamlessly and professionally. At the end, they presented us with a beautiful new system that is working very quiet and efficiently. My husband and I are so impressed at the quality of the service and the excellent product. We highly recommend Qualtech for any HVAC needs. read more

I would give 10 stars if I could. Excellent and responsive staff from office to installers (Myriam, Omar, Wilson and Eric). Very efficient, knowledgeable and professional. Thank you so much! We are now very much enjoying our new furnace. read more

After this review, the nice / well put together original sales person called, apologized, said the owner had seen it and asked to call and what they could do to make it right. I offered they either return to finish the job as the original contract described it or change the price to whatever not cleaning / re-sealing the bottom plenum connection should have cost. They said they would return and fix it and asked me to change the review to five stars. I said I would once they finish the work. He said the office would call me to schedule that, hung up, and I never heard from or saw them again. Again, they did decent work, that appears to have held up, but I do wish I had personally supervised the job a lot more closely. read more

I hired Qualtech last minute to install new ducts and upgrade a 75 year old furnace. Daniel was my contact and come up for an assessment and estimate. He communicated the issues and options very well and patiently and quickly sent over a proposal for a new system. Miriam was my office contact and she was very effective in handling scheduling and billing. The work was scheduled quickly and seamlessly. During install day, Daniel called me and said they noted there were no registers in any of the 3 bedrooms, and recommended adding 3 new registers. The change was approved for a reasonable price. I really appreciated their attention to detail and concern in making sure the new system would serve us well. The lead installer Abraham then took over communication, and he was nothing short of amazing. We communicated over the phone with sketches, photos, and video calls to discuss options for register locations. He was incredibly patient, knowledgeable and really seemed to care that we were happy with the result. They even cut out a cardboard template matching the grill sizes and sent over photos showing how registers would look. I would 100% go to Qualtech again for any HVAC needs. Update: 2 months after installation, Qualtech was able to help us complete the permit process AND apply for a rebate from Bayren for $1,250. This was an awesome surprise and I really thankful to Erika for helping guide us through this process! read more

Needed to replace a very old and inefficient air conditioner unit and furnace. Daniel Alvarez was super quick to come over and give a quote and was very professional and courteous. He also gave me many options and his professional opinion as to the best direction and why. When it came to the install, Antonio and Abraham were a wonder duo going to every length to make sure I was happy with the install and spent two full days at house making everything was removed and installed perfectly to me and my wife's satisfaction! In addition, Erika handled all the paperwork for rebates with state. GREAT experience! read more