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    HVAC & Insulation Gurus

    4.4 (352 reviews)
    Closed 7:30 am - 5:00 pm

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    Response time

    1 day

    Response rate

    100%

    Services - HVAC & Insulation Gurus

    HVAC installation or replacement

    HVAC system repair

    HVAC system maintenance

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    The sales and installation experience with HVAC Gurus started off great. The sales team was responsive, professional, and quick to help me select the right heat pump. Installation was smooth and the technicians did a good job. **** [PROBLEM] **** However, things completely changed after the installation was done and the invoice (including the city permit fee) was fully paid. Part of the contract clearly states that HVAC Gurus would handle the entire city permit application and approval process, and they even charged me for the permit. But weeks later, the permit process has still not been initiated. I've followed up multiple times. No one answers the phone. No one calls back. I've sent emails -- no response. At one point the sales agent mentioned there was "a lot of crowd in the city office," but since then I've heard nothing. The lack of communication is extremely frustrating, especially because my rebates and tax credits for this year are at risk if the permit isn't filed promptly. It's disappointing to see how responsive they were before the sale, only to go radio silent afterward. If they get back to me, submit the permit immediately, and follow through as promised, I'm happy to update this rating. $5000 in rebates & Tax Credits are at risk for me. Please avoid this company.

    New power switch installed.  Old was a traditional switch that was burnt!!

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    10 months ago

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    Michael H.

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    Slow to respond, overpriced, and website won't load. Recent reviews regarding poor communication are correct

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    Page 1 of 9

    Ask the Community - HVAC & Insulation Gurus

    Review Highlights - HVAC & Insulation Gurus

    I rang Simon and from the first call, I felt comfortable with his advice.

    Mentioned in 120 reviews

    Read more highlights

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    Attic Crew

    Attic Crew

    4.8
    (619 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.

    I can't say enough good things about Attic Crew. From start to finish, their service was…read moreexceptional and truly above and beyond what I expected. I had an urgent issue, and without any hesitation, they came out twice for follow-up visits to make sure everything was fully resolved. That level of responsiveness is rare and deeply appreciated. Caleb, Morris, and Sofia were both incredibly attentive, professional, and helpful throughout the entire process. They were always quick to respond to texts and messages--no delays, no runaround, just clear communication and genuine care. Jay, the owner, is equally impressive. He is very professional and took the time to thoroughly explain the entire rodent cleanup process, which gave me a lot of confidence and peace of mind. If you're looking for a company that is responsive, knowledgeable, and truly stands behind their work, I highly recommend Attic Crew. Excellent service and an outstanding team.

    Universal Insulation

    Universal Insulation

    4.8
    (151 reviews)

    Many thanks to the Universal Insulation team for doing such a great job on my attic from start to…read morefinish. We purchased our home many years ago and didn't realize how much of a mess the attic truly was until Universal Insulation completed an assessment in preparation for a possible heat pump installation next year. We're so grateful to have found a company we could trust to do things the right way. During my correspondence with Marko, Marko arranged for an assessment to be conducted by Nicholas. From the initial assessment, Nicholas was incredibly patient in addressing all our concerns and questions -- especially since we are very "hands on" homeowners. Once the contract was signed, Ann promptly scheduled us for the next available appointment and provided clear, detailed instructions on how to prepare before their arrival. The meticulous process began with removing the old insulation and debris, vacuuming the attic floor, and sanitizing the space. The next step was ensuring the attic was structurally sound and ready for new insulation. Because of the care and attention to detail that Marko, Miguel, and Nicholas put into every part of the job, we ended up with a dry, well insulated, properly ventilated, and easily accessible attic. If you're looking for an excellent insulation company, I highly recommend the team at Universal Insulation, Inc. -- they are truly competent professionals who take pride in doing things the right way.

    Highly recommend these folks! Arrived when they said they would! Easy to talk to, answered all my…read morequestions, "got on" with the job. Finished the job in less time than originally quoted, excellent clean-up. Quite reasonably priced, especially for Santa Clara County, also included a credit for quoted work that didn't needed to be done.

    Attic Masters

    Attic Masters

    4.7
    (127 reviews)

    If you're seriously considering Attic Masters, make sure that at the very least you get a second…read moreopinion, because here was my experience: Their technician, Sebastian, came out and did an inspection that, for reasons beyond my understanding, didn't include actually looking at our second attic space. Yet, he still included it in the estimate and priced it as a 1k sq ft job and called for removal and replacement of all the insulation. He recommended replacing all the ducting as well. The problem? Each of the four subsequent inspections I received noted that the space was small (less than a couple hundred sq ft) and clean with no issues. While he did inspect our primary attic space, he claimed that rats had gotten into the ducting and recommended that it all be replaced. Guess what? Each of the subsequent inspections noted that the ducting was in great shape, but just needed some outer insulation repair. Before I brought these issues to Attic Masters, I had a conversation with the Adam mentioned in other reviews and had the same experience those reviewers did where he was defensive and made it very difficult for me to get a word in. And, I emphasize - this was before I even brought up any issues! After I brought the above mentioned issues to their attention in a subsequent email? No apologies or acknowledgement of the obvious problems. They just tried to brush it all aside. I'm sure they have their reasons, explanations, and justification, but it sure seems like they were being dishonest with me. You have a lot of options when it comes to this work. Proceed at your own risk.

    This is the very first time I'm giving less than 5 stars for a yelp review. I usually like to give…read morecompanies the benefit of the doubt and give them opportunities to make it right, but my experience with Attic Masters and Adam have been nothing but endless frustration. First, they didn't show up to our scheduled appointment on Nov 29, at 8AM even after I received 2 confirmation emails, and text reminders about the appointment (attached below are photos of the confirmations). I specifically chose this company over Attic Bros because I was told that they work on the weekends and complete jobs on weekends. In hindsight, I wish I would have just gone with Attic Bros from the start. Two guys came at 2:30pm instead on Saturday after I had called them at 10:30am about how no one showed up. The 2 guys only put up 2 films of radiant barrier and left at 5pm. On Sunday morning, the remaining workers showed up and "finished" at 2:30pm, however they didn't rodent proof my crawl space until I had pointed out the holes to them. They did it after I had pointed out the holes. Additionally, they never rodent proofed my the attic side vents. They rodent proofed the roof, sure, but I would have thought the side vents would be included (they didn't have a ladder to reach it so they didn't do it). I had to hire a third party to fix the holes/gaps on the side vents instead because Adam and his company didn't want to come back to fix it. I was told they'd call me back when they can schedule me in, but after a week I gave up and just hired another company. Also, they damaged one of my kitchen lights when they were doing work in the attic. Adam also said he would send someone to fix it and that it's "easy" but nothing ever came of it. The 3 stars I gave them is because the insulation looks decent and that they still came on Sunday to follow through on the project, but if they could lie to me about "fixing the side vents from the inside" who knows what else they may have lied about. I am concerned about this company's integrity. Also- Adam is rude and defensive on the phone, and doesn't really let his customers speak.

    Attic Pros

    Attic Pros

    4.5
    (1.1k reviews)

    We found signs of rodent activity in our home and after talking to several companies, we decided to…read morego with Attic Pro. We are incredibly happy with the work they have done. There was an active rat infestation in one of the attics and they acted quickly - cleaned and sanitized all spaces where rodent activity was found, pulled out all the appliances and cleaned, cleaned the duct work, and did a very thorough walkthrough of the home to find and close entry points (and there were a lot of entry points, sigh). Everyone I have worked with have all been professional, friendly, and knowledgeable - especially Jorge Hernandez, Allan Pablo, Armando, Tom Best. The job is so incredibly thorough and they are on top of the follow up maintenance. I am very happy I went through this company to get this house cleaned up.

    December 2025. Wesley came by and looked at my space and…read moregave me an estimate. I mentioned that I am also looking for a reliable handyman. Wesley suggest someone named Neo that works with him. I texted Neo and we selected a date and Neo choose 9AM as my schedule was open for the day. On the day of the appointment; 9AM came and went. I texted Neo to ask if I had the date wrong and did not receive a response for over 30 minutes. When he did respond; he stated that he would be at my home if 15 minutes. I texted back that I was not at home. As I was pulling into my driveway, I saw a truck loaded with work materials pull up and stop across my driveway. I got out of the car and came into the house. Once inside, I did a quick task and went back to the front door to close and lock all the doors. As I Iooked outside, I saw the same truck parked across the street. The guy got out of the truck, walked up my stairs and rung my door bell. I do not know if he was drunk or high but there he was. His excuse was that he has something happen with his child. He insisted on coming in and taking a look. I declined. He insisted several times. I told him to get off my property and that I would be calling the office to let them know what had happened. I did call their office and let the receptionist know what had happened. She apologized. I tried to call Wesley to talk to him and left a voicemail. I never received any response. As a Black Women that has lived in Oakland for a long time...... I would not recommend this business to anyone especially women. As a good client, you should be heard and respected always!

    Atticare

    Atticare

    4.4
    (761 reviews)

    Atticare team did a great job with my attic clean up and insulation change. Samuel Mor and his team…read morewent above and beyond to explain to me their process, carefully remove my old insulation, get an electrician to come check everything was good before putting new insulation in. For context, I interviewed 3 vendors but went with Atticare because Samuel was knowledgable and professional in his approach. We are happy with the outcome and definitely recommend Atticare and Samuel team for any attic work.

    I had AttiCare come out for an estimate to clean the attic and provide insulation at a rental…read moreproperty. The estimator's in-person presentation was very good -- professional, clear, and well organized. The overall process was explained pretty well however I needed more info after he left. The one key issue for me was the R-rating and since R-value is a major factor in comparing insulation options, I wanted to understand exactly what was being installed. I tried to follow up with the estimator to get clarification and asked for a call back. While multiple emails were exchanged from what seemed to be the corporate end, there was no actual human interaction, and my request for the estimator to call back failed. Because of that lack of follow-through, I ultimately decided to go with another vendor who was more responsive. AttiCare made a good first impression, but communication after the initial visit failed. I wouldn't proceed without speaking to the estimator. They lost a job due to that.

    HVAC & Insulation Gurus - hvac - Updated June 2026

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