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    Qualtech Heating & Cooling

    4.3 (208 reviews)
    Open Open 24 hours
    Updated 3 weeks ago

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    Reviews With Photos

    Mitsubishi 18k BTU ceiling cassette
    John W.

    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.

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    9 years ago

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    6 years ago

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    7 years ago

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    4 years ago

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    Myriam R.

    Thank you Colleen! It was a pleasure working with you on your project!

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    7 years ago

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    14 years ago

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    10 years ago

    Nicest staff. They took care of us quickly and resolved our heater issue within 12 hours.

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    Ask the Community - Qualtech Heating & Cooling

    Hello, wondering about your availability today to repair air conditioner?

    We definitely have some availability today. Arrival time depends on what city you are located in. Please feel free to call anytime. 925.831.2444. Thanks!

    Don’t See Your Question? Ask Away!

    Review Highlights - Qualtech Heating & Cooling

    Erika, their scheduler and main point of contact for customers, is *extremely* capable, cheerful ...

    Mentioned in 44 reviews

    Read more highlights

    Crawlspace Clean - Encapsulation Barrier

    Crawlspace Clean

    (182 reviews)

    We have a crawlspace in our house that needed some TLC. Sure it provides a way to route air ducts…read moreand water pipes along with raising the house on pillars. However, crawlspaces can get moldy and wet from lack of care. If you ever encounter rodents, there is a good chance they came via the crawlspace. After all, we do hear noises at night at times, which is creepy. Jacob visited and gave a comprehensive review and estimate. We basically went for a full package of rodent control, cleaning, and installing a new vapor shield to keep it dry. The while job took maybe 2.5 days with a crew of 3 workers each day. Outstanding quality work. First phase was sealing up the homes around the house and crawlspace, and laying traps. The attic was inspected too. This was followed up with weekly followups to ensure no more rodents. This scope was subcontracted to Golden State Critter Control. Highly recommend working with Greg. The next two phases involve cleaning and eventually reinstallation of the vapor shield. Compared to what we had before, it was day and night! I also appreciated the crew alerting me to a leaky drain pipe. I later worked with a plumber to replace a cracked 3"D drain pipe that connected upstairs to downstairs. It was fixed in about 3 hours with two plumbers. Definitely recommend Crawlspace Clean for rodent control and crawlspace cleaning. 5 stars.

    I rarely write negative reviews, but I feel compelled to share my experience with Crawl Space Clean…read moreto save others from the same costly mistake. The main issues boil down to three things: excessive pricing, sub-par workmanship, and a very short warranty period. About a year ago, I discovered a bad rodent infestation. Looking for a quick solution, I made the mistake of hiring Crawl Space Clean without getting multiple bids. I spent over $14,000 on rodent-proofing and subfloor insulation replacement, only for the rodents to return. When I called them back, I was informed that my one-year warranty had already expired. They charged me extra just to patch entry holes they had missed during the initial job. During that same visit, they claimed I now needed a vapor barrier, quoting me an astronomical $16,000--though they offered a high-pressure "$500 discount" if I signed the contract that very day. Feeling suspicious, I finally did what I should have done at the start and called three other highly rated contractors for estimates. Every single one of them came back with quotes under $7,600 (less than half of Crawl Space Clean's price), and all of them included a 3-year rodent warranty. Furthermore, the contractor I ultimately hired to install the vapor barrier pointed out that the subfloor insulation previously installed by Crawl Space Clean had inadequate support and was already sagging. Learn from my expensive lesson: always get multiple bids, and avoid this company.

    Attic Pros - Attic Cleaning

    Attic Pros

    (1.1k reviews)

    East Oakland

    I got great immediate service when Najim came out to inspect my attic. My newly bought house was…read morebuilt in the 60s and had zero insulation remaining which was a big issue with a newborn mid summer heat. He helped coordinate an earlier spot in the work schedule. Rodolfo came out next business day and was able to get it done immediately. Professional interactions, photos of work performed and overall great experience. Work was completed on our second floor attic in about six hours total.

    A Good Overall Experience with Some Ups and Downs…read more We had been dealing with rodents in our attic for several months, so we decided to have the attic professionally cleaned. Our experience with Attic Pro was overall good, although the quality of service varied somewhat depending on the individual team member. Fortunately, we started the project with Assad, who did a very thorough inspection of our attic. He recommended not only cleaning it but also replacing the insulation, since it was very old, dirty, and heavily contaminated with rodent droppings. The initial quote was on the higher side, but Assad was able to offer us a discount. The project was completed in two phases. During the first phase, Osman's team removed the old insulation, set up traps, and did an excellent job sealing openings into the attic. They really went above and beyond, including closing several openings that we specifically pointed out and replacing some of the old mesh. Unfortunately, one of the rodents ended up getting trapped inside a wall and died, leaving us with an unpleasant smell behind a kitchen cabinet. I contacted Attic Pro several times about the issue, and each time they sent someone out to inspect the attic and help us address the problem. Their call center staff were also consistently courteous and responsive. In total, five rodents were caught. Whenever someone from the team came out, they would also inspect the attic and seal any additional openings they found with mesh. While a few of the individuals who came later were not as professional as Osman's team, they did complete the work properly and were patient throughout the process. They also waited more than a month before starting the second phase, giving us time to make sure there were no more signs or noises of rodents in the attic. Once we were satisfied, the new insulation was installed quickly, and Osman's team--Anthony and Roni--did a very good job. Overall, despite a few bumps along the way, we had a good experience with Attic Pro. The professionalism of some team members, particularly Assad and Osman's crew, really stood out. I would recommend them, while also noting that the experience can vary depending on the crew assigned to the job.

    Insulation Alliance - Warehouse now Cooler in summer and Wormer in winter.

    Insulation Alliance

    (122 reviews)

    We were initially told by another HVAC company that we needed to replace all of the air ducts and…read moreinsulation in our attic, add insulation in the rafters, and address rodent droppings in the crawl space. When Elmer came out, he took about 30 minutes to walk through the house and gave us a completely different--and much more reassuring--assessment. He identified entry points where rodents were getting into the crawl space, explained that the air ducts did not need to be replaced, and instead recommended insulating the rafters, reinsulating the attic floor, and cleaning and reinsulating the crawl space. He also suggested installing an attic fan to improve air circulation. Throughout the visit, he was straightforward, knowledgeable, and very approachable. We decided to move forward with the attic fan. Umar updated the contract promptly and even came out personally to help program the fan and connect it to my phone. Their team worked tirelessly over four days and did an excellent job. They were professional, detail-oriented, and left the house clean when they were done. We enthusiastically recommend Insulation Alliance. Thank you, Elmer, Umar, and team! ST, Redwood City

    I discovered this shop on Yelp after it recommended several local businesses. I had multiple quick…read morequotes, but Umar provided the greatest response and cost, as well as a quick two-day schedule on Sunday, which is my day off, so he saved my days. His worker blew insulation through the holes he made in the walls. and expertly completed within four hours. Everything was cleaned, vacuumed, and dust cleaned after work. Umar emailed me the certificate letter so that I could show it to the City Inspector. Thank you, Umar, and your workers for being professional and responsible. You deserve to have the very best business.

    Attic Crew

    Attic Crew

    (627 reviews)

    We worked with Jay, Andres(?), and Angelica. They really went above and beyond to help educate us…read moreabout the process of installing a moisture barrier and all the factors that go into successful rodent abatement. The communication was excellent, even on a holiday weekend I got called back within an hour of reaching out with questions, which I certainly did not expect! They arrived promptly for appointments and were thoughtful about avoiding tracking dirt into our home. They worked with us to customize their work to our coastal climate and were very transparent about exactly what materials they would be using (all top of the line, industral-grade!). I have pets and toddlers and they took my concerns about chemical disinfects seriously and offered several options to make sure I was comfortable with what was used in our home. They really seem to take pride in their work and enjoyed sharing before and after pictures to demonstrate all the improvements they made to our crawl space. I could not be happier with my choice to hire them, and plan to work with them again when I'm ready to replace my attic insulation.

    Everything about working with this company was easy, from scheduling with the front office, to our…read morefree consultation with Hakan, to the actual work done on our house and the follow-ups we've scheduled so far. They did an amazing job replacing the ducts in our house and kept us well informed the entire time of what was happening. They were incredibly respectful of our property and made sure to clean up well afterwards, making sure to listen to any concerns we've made. Hopefully their amazing customer service continues as we work with them over the next year to monitor our pest situation!

    Chris's Insulation Services - Insulation Removal

    Chris's Insulation Services

    (117 reviews)

    Fruitvale, East Oakland

    Beyond easy experience with Chris. My dryer suddenly started giving off a burning smell, which I…read moremistakenly attributed to the lint catch being overloaded. But even after cleaning it out, the smell wasn't going away. Then the vent started giving off either smoke or steam, and in a panic I immediately turned off the dryer. Thank God I didn't start a dryer fire. The second I shut it off and made sure everything was ok, I opened Yelp and searched for a dryer vent cleaner. Chris's Insulation came up, he had great ratings, he was super close by, so after calling a different service and going to voicemail, I called Chris. Chris picked up after the second ring. When I told him that I needed someone to clean our dryer vent and what had happened, he said he could come out either between 5:00 and 6:00 pm that evening or the next day. It was already mid-afternoon when I called, so I was surprised to hear him say he could still come out same-day, but I decided to have him do that since I was free and also still a little shaky following what happened with the vent either smoking or steaming. Chris showed up during the window he quoted and wasted no time getting to work. He started the second he arrived and was done within the hour. His pricing was incredibly reasonable and fair and so far, in the couple of weeks since he was here, we've had no issues with the dryer. Before he left, he also sent us a ton of pictures of what the vent looked like post-cleaning. Super happy and relieved.

    Professional service and they were able to come same day, which was the most helpful for me.read more

    Qualtech Heating & Cooling - hvac - Updated September 2026

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