Very happy and satisfied with service , Joseph was very detailed in explaining the step by step…read moreprocess and what's needed . He upgraded my attic with new insulation and added an attic fan . Seen the difference right away . Also he drilled and pump insulation in all my exterior walls . The home is comfortable and now using my heat/ac way less . Joseph said pge bill will start dropping. He's very kind / positive. I admire he's a single parent who is widowed . He takes pride in his work made me feel comfortable instead of giving me sales rep vibes . He diagnose what's needed to receive the best results . Definitely recommend you contact this company

Joseph and his crew were professional but more importantly honest and saved me a lot of money…read morecompared to other bids that tried to upsell me. My house had literally zero insulation in the walls and I was hesitant to add any due to mixed reviews, but I trusted Joseph and he delivered. Now I don't hear as much noise and the rooms feel a lot warmer. Then he did the attic by first cleaning it, then sealing it and filling it up to spec with quality insulation. My house used to have cold spots and heater would kick on every 20 minutes. Now there are no cold spots and the house stays warmer a lot longer and again much quieter from external noise. I would highly recommend his services.

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.

We used Attic Masters in 2015 for an insulation job. They installed blow-in insulation in the…read moreattic and bat insulation in the crawl spaces. We have not had any issues since the ones that we dealt with during the initial installation. Fast forward to this week (Mar. 2026). We are in the process of getting quotes for installing a vapor barrier. During inspections, two separate insulation experts notified me that the batt insulation was installed incorrectly. The paper should be facing the floor rather than facing outward. See photo.

We had a rodent problem along with old, dirty insulation. David and his team offered a reasonable…read moreprice and completed the work quickly. David is very responsive and always picks up the phone right away. The team also did a good cleanup and showed great respect for our home interior, which we really appreciated. I would definitely recommend their services!

David was quick and straightforward. No pressure and explained each step and performed a thorough…read morecheck

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.

Max & Co. did a great job! They started early AM removed my old blow in insulation. Sprayed rodent…read moresolution. Sealed the opening and installed bats insulation. Work was done in half a day for 2500sqft attic space. One of the guys then pushed back recess lights popped out from all the work upstairs. Max was great in explaining all the details and flagging any concerns even on electrical side. Hardworking crew!

911 Attic Insulation was the first company that came out to give us an estimate. Max was very…read moreprofessional and had an excellent presentation when he came to give us his estimate. He explained in detail everything that would be done, how long it would take, etc. In my mind, I kept comparing the other technicians from the 3 other companies we contacted for estimates but none of them matched Max's enthusiasm for wanting to win our business. When we finally approved the estimate and scheduled the appointment, Max's team came and finished the job as promised. 911 Attic Insulation's quote was also the most competitive out of the 4 we received. I would not hesitate to recommend 911 Attic Insulation to anyone who is looking to replace their insulation.

They installed a carrier heat pump on my roof with a new platform covered by a painted screen. All…read morenew electrical components and electrical connections. A new heat exchanger system/ gas heater,new ductwork with adjustable insulated ducts, a new ecobee smart thermostat. Power during the day is provided by my existing solar panel system. The system runs quietly and has saved 48% electricity over my previous system. They performed the installation in one day, built a plastic tunnel inside my home to capture all of debris from demolition and installation. They serviced the system once a year. I recommend San Jose Heating and Cooling Company

So helpful - I thought I had one problem and Andre came right in and found the actual source of the…read moreissue right away. He was able to source the parts asap and get it fixed quickly. Knowledgeable, friendly, and efficient.

We had our attic cleaned out and new insulation and ductwork done. Very professional from start to…read morefinish. Michael Barrie was excellent in scoping out the work and explaining how things would proceed. Liv and Catherine were very friendly dealing with the scheduling and paperwork. Jose Montiel led a very professional team and completed the job. We are very pleased with the result!

These guys have it down to a science!…read more Reached out to them on YELP. They responded within 20 minutes (actually faster) and could set up a free estimate and inspection. Michael came out. He inspected, explained, then sent me a quote that day. Very efficient. Scheduled when I wanted them to come. They only needed to do my house in 1 DAY. Wow. Nicholas was the project lead. He greeted me and explained what was going to happen. He patiently listened and explained answers to my questions. The crew kept the place clean, took out all of my old insulation and disposed of it, sanitized the attic, patched all the holes or places that rodents could get in, laid new insulation down. Super efficient. Great company to have worked with. I really like their communications. They text and call appropriately. Most of all, they did exactly what Michael said they were going to do. Very satisfied!

We had our crawlspace done a couple of years ago. The work and experience was top tier. We…read morerecommend to our neighbor who's just had the same work done and same positiive experience. We live on a street with a high water table, and the seasonal rains routinely brought seasonal smells of mildew and moisture when you entered the home. Significant and noticeable. As were the bacterias and significant colds we'd experience as well. it was just not healthy. With their help and detailed efforts we're two years into the new environment and havn't hand anything but clean clear dry air and no green sneezes. (Sorry, but, it's true). I also found them highly responsive and reasonably priced. I don't write reviews often so when I do, it's for a good reason. This is one of those instances.

We have been so lost with where to start with our new home and have some crawl…read morespace/foundation/rodent issues we are trying to take care of. I filled out their form and they contacted me the next day- they don't offer the services we need but they were so nice and gave us a recommendation to a business that could help us and a place to start which I really appreciated. So I can't speak to the work but their customer service was fantastic so if we ever need moisture barrier we know who to call! Thanks!!

As a first-time homeowner, I have a lot to learn, but I knew for sure that our house was abnormally…read morehot in the summer and freezing in the winter. When the team came out to inspect, they were incredibly kind and understanding. They thoroughly explained their recommendations and patiently broke down why batting insulation wasn't the right fit for our home. They also offered wall insulation which was what we were also looking for as our south facing walls always felt warm to the touch in the summer. We ended up hiring them, and they completed the entire job in just a few hours. I wanted to wait a few weeks before writing this, and I can now confidently say they did a fantastic job! The house feels significantly cooler and much less humid. (Keep in mind we had zero insulation before, so results might vary if you already have some old insulation). We'll see how it holds up this winter, but for now, I highly recommend them. To top it off, they gave us the most affordable quote by far--and it included the wall insulation, whereas other companies charged more just for the attic!

Great customer service and quality work. Responsive, collaborative, honest estimates and fair…read morepricing. Highly recommend Ahmad and his team.

David was professional, transparent and gave very fair pricing. His men were very professional as…read morewell and did an exceptional job installing batt insulation into my attic. In fact, I have two attics, and when an issue came up (on my end) regarding the installation of the second attic, David was very flexible with me. I highly recommend Atticity.

We contacted Atticity to insulate our garage. We received a response within the hour, and had…read moresomeone on-site to provide an estimate the same day. They were quick, efficient, and professional, and very communicative. On the second workday, we received a text from the owner saying that his team hit traffic and would be about ten minutes late. I might not have even noticed if they'd just shown up a few minutes after they said they'd be there! I'm very appreciative of the attention and effort we received while the job was being done. They even finished about half a day early. I've already recommended Atticity to several of my neighbors. I'll be calling them again if I ever need more insulation work.