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    Services - Attic Masters

    Insulation inspection

    Insulation removal

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    Recommended Reviews - Attic Masters

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    Reviews With Photos

    Insulation and attic fan.

    Attic Masters insulated our attic yesterday. Our home is 70 years old, and still had the original sawdust insulation installed. Attic Masters' crew came and removed all the old insulation along with assorted debris from the past decades, sanitized the space, air sealed all the cracks, did some rodent-proofing, and installed new insulation. We got several quotes when planning this work, and chose this company because the gentleman that came to do the estimate did such a good job explaining the work they would do, giving us options where it made sense to do so (insulate above the attic? What type of insulation?) and being transparent about the whole process. We were not disappointed, the work was beautifully and quickly done. Would highly recommend their work.

    Adam TOTALLY flaked on me...
    J J.

    I made an appointment for an estimate to get my attic insulated with these people a week ago (June 25) via the Yelp app online. "Adam" communicated with me that they would be here between 10AM and 12PM on July 2nd. I had to shuffle some appointments I had in the morning around to accommodate for this time. Well, fast forward to today (July 2nd)...I've been sitting on my butt all morning to wait for the estimator to show up. When 12:15PM rolled around, a total classic no-show. I called their office and "Adam" (I presume the same Adam I was talking with through Yelp?) acknowledged my appointment and said someone would be calling me right back... So about 20 minutes later, someone named "Reuben" called me and said, "the office made a mistake...I might be able to make it around 2.." I told him "no" as I have to be in San Francisco for an appointment at 2:30..he sounded like a broken record and kept repeating that the "office made a mistake.." I told him to just forget it, that I was going to go with another company that genuinely respected their customers and their time..(do they think people just sit around all day, that other people's time is not important?!) If you're going to flake on an estimate for a potential job, chances are high that you'll flake on the actual work, too!

    After old insulation removed. Lots of droppings.
    Andrew W.

    When the day got cold, little critters started to build their homes in my attic. Following the reviews here, we contacted AtticMaster for an inspection. Roy was our inspector and later led the clean-up team. He is professional and easy to work with. He came for a free inspection the next day and actually came back the second time since we forgot to ask for the garage attic inspection at first. The pricing was reasonable and the scheduling was easy and quick. On the day of clean-up, Roy brought a four-men team including himself. The team moved fast and finished the work in 7 hours. Throughout the day, Roy texted me with progress update and photos. Overall the work was satisfactory. I am glad to have AtticMaster to clean out our attic. A good company with hard-working and professional people. I highly recommend them.

    Rat droppings and sparse insulation (before Attic Masters)
    Darren W.

    I was in need for insulation services for my home, and searched on Yelp for local companies. I found Attic Masters, and wrote an online inquiry from their website link provided from Yelp. Within 15 minutes, I received a phone call from a live person to ask about my insulation needs. I was able to receive an estimate online, had some communication for fine-tuning the estimate, and scheduled an appointment. When the attic professionals arrived (Roy, and two other team members), they were very careful about preparing the entry way to my attics (I have two). I appreciated that they were very clean in their work, and respected my home. I originally wanted to have insulation only, but also opted to have the attic cleaned, decontaminated, and varmint-proofed prior. It seemed to make sense to have a fresh, new space before adding new R38. The cleaning work done by Attic Masters was amazing. They found a lot of debris, unwanted material, rat droppings, and more. I have posted before and after images to better describe how meticulous their work is. Not only was I unaware of the disgusting condition in my attic, I now have a greater peace of mind knowing that above my head is a sanitary space. When the cleaning was done, I was able to take a look for myself - the attic literally looks brand new! I would highly recommend this service to anyone, and especially for homes that were built many years ago like mine. The installation of the R38 was a great choice. I have added images as well for those interested in doing this. You can see that they carefully packed the R38 edge to edge. There are no areas where there is not coverage. Currently in December our energy bill is over $400. I am confident this will drop significantly now. Overall, I am very pleased with the service, staff, and work performed. The end to end experience with Attic Masters was very professional. If you are in the market for attic cleaning, decontamination, or insulation upgrades, I highly recommend them.

    A photo of my finished attic with R-30 battens ans radiant barrier.
    William M.

    I have used Yelp for years, but this is my first review and it could not be more deserving. The attic in my 1971-built house had little or no remaining blown-in insulation. When a new roof was installed a few months ago, the attic became so hot in the afternoons that the AC ran continuously until almost midnight. So that is where Attic Masters came into the picture to replace the old insulation with new R-30 battens. They also added a radiant barrier and replaced the return HVAC ducts with new insulated ones. The Attic Masters lead, Reuben, and his team of 4 installers did a fantastic job. They worked long days in my hot attic and their workmanship was outstanding. Moreover, they were the most polite professional team ever. They finished in three days and kept me informed of their progress along the way. I highly recommend Attic Masters for any insulation or HVAC duct work.

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    6 years ago

    Insulation installation job was done perfectly. Already noticing reduced energy usage.

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    11 years ago

    I guess my case is a severe rodent problem. Attic Masters has come back as needed to address the issue.

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    Page 2 of 4

    Ask the Community - Attic Masters

    Review Highlights - Attic Masters

    Ruben came to my house to estimate and he explained what would be done in details with photos from their work.

    Mentioned in 19 reviews

    Read more highlights

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    The services are very professional and helpful. I would recommend it. He cared a lot on his works,…read moreand patient to show me how to use it that i didn't know.

    I'm extremely happy and fully satisfied with the work that Henry and his crew at Therma Tech…read moreprovided for my house to replace the air ducts and put in a new heat pump and air handler for luxurious air conditioning. I had gotten an estimate from the Costco HVAC provider, and Henry's estimate came in thousands below theirs. For me personally, he had a crew of five or six guys working on the house and reduced what would have been a 5-day job to just a little more than 2 days. Henry even came over once to check on the crew and ensure they had everything they need and everything was going well. Thanks! Henry also suggested moving the air return register away from my front door (to avoid sucking in outdoor dust/allergens) and closer to the bedroom area, and he promptly had a guy come over to patch up the hole in my entryway ceiling. Jazmin in the office was really helpful in coordinating the asbestos removal on the ducts, which was a separate job, and also the post-installation inspections. Included with the install was a wi-fi thermostat to bring me into the 21st century. The Costco guys had that as a separate item with a 2x retail markup! I had AI analyze both estimates, and Henry's was the clear choice. We've been loving our house during the August/September heat waves!

    Air Sharks - Air Sharks team

    Air Sharks

    (102 reviews)

    North San Jose

    UPDATE 8/11: After I posted this review, I was contacted…read morenext day by a manager and then also the owner. The owner actually left a voicemail and I eventually called back. The owner apologized, wasn't defensive, didn't try to get to me explain my self and was just apologetic to what I experienced. They offered partial refund and service to show that they want to fix the wrong and prove that they are a great service company. ------ Original review: I had a very negative experience with air shark technician. My issue was needing the capacitor replaced. The fix was quick and I was clearly over charged. When I asked about this, the technician just said it's just business. He exaggerated the price of the part needed which is a capacitor saying it's like $200-$300. It's at most $50. It took him like 10 minutes to replace the part and said you either accept the charge and pay or I just take it out. It felt very predatory, like I already fixed it you might as well pay. He proceeds to measure temps and other various things just to pass time while he waits for me to decide if I want to pay or have him unfix it. I can accept being over charged but something about how this situation transpired left a bad taste for me. For example, why wouldn't you say you need to replace this and it cost this much for the fix instead of fixing it first then say pay or I take it off.

    We replaced our entire HVAC system with a Daikin 4-ton heat pump and went with Air Sharks after…read moregetting a few quotes. No regrets. The quoting process was straightforward -- no pressure, no mystery line items, and they actually explained the equipment options instead of just pushing the most expensive thing. Install crew was on time, respectful of the house, and left the place clean. Where they really stood out was everything after the install. Anyone who's done a permitted HVAC job knows the paperwork is where contractors go quiet. Not here. HERS testing forms, city inspection scheduling, warranty registration, and the maintenance plan were all sorted out. Hyman, Jean, and Khaled were each responsive whenever I needed something. No chasing, no dead ends. The system has been running well and the house is noticeably more comfortable. Easy recommendation.

    Calvey Heating and Air

    Calvey Heating and Air

    (535 reviews)

    Years ago the apartment complex I lived at contracted Calvey to install mini-split A/C in the…read moreapartment I was in. The install was amazing quality! So much so that it gave me the confidence to buy my first home without A/C because I knew I could just call Calvey. A few years later I did just that. Damn, it's been a couple of months now and I've been able to control the climate of my entire house from my phone, optimizing the temperature and sometimes making it as low as 66F to just enjoy the air being crisp. The install has been fantastic quality and the crew listened to everything I wanted every step of the way. They mounted rat spikes where I wanted, they put the lines and the units exactly where I asked and I've had no issues at all. I truly believe with home price comparisons in my area that I made money off of the install because it increased my home value. My golden retriever is happy, I am 100% happy and I will see you guys again next home upgrade. :)

    Quite unimpressed. Called and spoke to their receptionist girl, who was ok, seems to not know much,…read moredeflects questions and avoids clear answers, but that's not the problem. I send plans and followed up more than twice with direct emails and voicemails. Nothing. No call, no text, no email. No response at all. Clowns! Maybe they're too busy filming awful commercials lol... call them and that's what you'll be paying for! These guys may be ok, but I'll never know and I'll never call them again because they're very unprofessional. They misrepresent 'free estimates'... liars. Find someone else is my recommendation! Bad service, zero communication. FAIL.

    Global Heating And Cooling Services

    Global Heating And Cooling Services

    (696 reviews)

    Willow Glen

    I am reposting my review with Global heating because it looks like my first one about three months…read moreago got taken down for whatever reason Yelp decided. John was amazing when he came over to my house. I had previously interviewed and hired two other contractors to come in to look at my AC unit and they did not know what the hell they were doing. By the time, I finally reached John, he knew exactly what was wrong! He is super honest and his price was amazing depending on what your issue is with your AC. My issue was I needed a new compressor which the other two bozo clowns couldn't figure out. My only regret is that I wish I found John as my first contractor instead of interviewing and working with the other two bozos! I live in Newark. Thanks for coming out this way to make my day a whole lot better now that I have a working AC unit.

    I had an issue with an older A/C unit that multiple other providers looked at and couldn't figure…read moreout. Giovanni came in, diagnosed the problem, and found a creative solution that actually worked -- no "you need to replace the whole unit" runaround, just genuine expertise and a willingness to think outside the box. What really stood out beyond the technical skills was how accommodating and flexible he was throughout the whole process. He worked around my schedule, kept things stress-free, and was friendly and easy to talk to from start to finish. You can tell he actually cares about doing right by the customer rather than just closing a ticket. Global Heating and Cooling Services has earned a loyal customer.

    Attic Masters - insulationinstallation - Updated September 2026

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