Having our old 1930 house insulated has far and away been the best investment we've made in our…read morehouse. We've lived in the house for over 40 years and were used to sweaters and sweats in the winter and during our hot days spending more time in the cooler downstairs. We now leave the thermostat set at 64 for a low and 74 for a high and the heater rarely goes on. Today (9/9/2026) we think the AC might actually go on later today. Yesterday the house never even reached 74. We had building efficiency do the insulation almost 2 years ago and have gotten so used to our house being in a comfortable range all the time we rarely even think about it. This latest heatwave has reminded us of how glad we are that we did it and that we should give them a plug again! The process itself is fairly disruptive but doesn't take too long and Building Efficiency was very profesional and helpful in minimizing the disruption. Our only regret is that we didn't do it long ago.

Building Efficiency evaluated the property and educated us thoroughly before providing a…read morecompetitive to install a heat pump and water heater. They communicated well, kept a clean work site, and the staff was professional and efficient. We've been very happy with the results.

I started to hear little pitter patter footsteps and gnawing sounds at 5 am, and on day 2 of this,…read moreI messaged Attic Crew. They sent someone the next morning for an assessment and got us scheduled right away! In the interim, they gave us recommendations to deter the rats, which worked. Carlos and his crew arrived on time and finished quickly. The price was reasonable (honestly, on the cheaper side yet the quality and professionalism was great!). There was an issue with a short circuit because a rat chewed through the insulation that we didn't notice until the weekend, but Carlos responded immediately and came over to fix the issue. We are so grateful to Carlos and the Attic Crew for helping us with rats in the home, helping us feel more confident about keeping them out for the foreseeable years, and for all of their professionalism, knowledge, and expertise! Would definitely recommend!

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.

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.

Carlos and his team are great. I was tired of sweating in my hot garage and sent a yelp request to…read moreCarlos. He called me back in 20 minutes (after they were closed). He asked some question about my insulation needs, we agreed on a reasonable price, and he said he could have his team there the next morning! The installers arrived on time, were super efficient taking only a couple of hours, and cleaned up everything like they were never there. I went into the attic to see the results personally (they did send pictures) and the quality of the install was great. Carols is a straight shooter and his team are professional. I would use them again.

Carlos' company is fast and efficient. They came in at 8 AM and was finished by 1 PM to spray foam…read moreabout 600 ft.² of my garage roof. You can tell they pay attention to detail because the garage was left cleaner than what I originally left it as. For my experience, many contractors tend to leave a mess behind sometimes for their customers which can be frustrating. For my research with close cell spray foam there is definitely a technique behind it for proper installation, and I am pleased with what I see. I did expect more fumes from the spray foam, but surprisingly the product they use has minimal smell to it.

Wilson did and super exceptional job. He is so nice and approachable. He explained everything…read morebefore and after. Awesome job! Thank you. We definitely recommend the service.

I found Atticare through an online search. Since I am in the trades (electrician), I was looking…read morefor an insulation replacement company with more than 10 yrs experience. They are listed at having 15+ yrs experience. Samuel was the person who came and did the estimate. He's was prepared with a binder which showed the company's history and service they would perform. I had a serious rodent problem. My attic vents were compromised (they patched them all) and there were several locations where the rodents had made their mark. They cleaned out everything and vacuumed the droppings. When they came back to install the insulation, they used high quality wool bats and their 3-man crew completed the task in 2 1/2 hrs. The were efficient and very professional. I'd definitely recommend their service.

Did a complete Attic clean up and R44 blow in insulation & in wall insulation for an old 1959…read morehouse. I would say, they did an excellent job - Starting with Jeremy, who accommodated my schedule for preliminary inspect and gave me a on the spot quote. Elder and the guys did an excellent job in covering up the entire house and finished the job in 2 days. My house had no insulation in the walls- to very less in the attic. After the insulation my Heat as well as Cold is retained inside the house. Heat turns on once in a 24 Hr cycle vs multiple times in an hour previously. If you are thinking of in wall insulation, it's totally worth it. The quote was the most competitive and they were very flexible. I am still closing out the multiple holes in the wall, will take time as i prefer to do it myself- I had plans to paint anyway .

Good solid insulation company with actual employees from the company doing the work, and not just…read morehiring outside contractors. Everyone was extremely experienced and the work was completed on my home quickly and efficiently, with everything having protective plastic sheeting all the way from my front door to the work areas. The sales rep that came out to do the initial inspection and to give a quote, was very experienced and answered all my questions. We agreed on a course of action, and I later discovered I needed additional work, and he worked with me on getting that added. The workers arrived even earlier than expected on the day they were working on our house. They clearly had all the appropriate material and machines and equipment to do the job correctly. I feel very good about everything that was done and I would definitely recommend them. Everything was left clean and there was nothing I had to do to clean up behind them. The reason I am not giving five stars (only 4 stars) is because of the paperwork having multiple errors, and they took weeks to get me the pictures of the before and after shots of the work they did. I asked them to correct some errors I found in the paperwork, and even found more errors and had to ask them a second time to correct the invoice for my records. I also questioned whether the correct insulation was put into a certain wall, because the paperwork was incorrect. It took a physical callback from a different person to physically check, and he didn't really seem to understand clearly what the problem was. I showed him pictures of the insulation rating that I took for that wall, and he was about ready to go and purchase the insulation and redo the specific wall I was questioning. But then he just called the installers and they told him they put the correct R-Rating on that wall and then he left. He clearly was not trained well enough, and I still don't know if the correct insulation was put on that wall. All the hassle of the paperwork correction and reinspection of the work was not necessary if they paid attention to details better. But other than the paperwork and questioning a specific wall, the actual work was professionally done and these guys clearly are a good professional organization. Just keep an eye on the paperwork and go over all the lines of work in the contract before you sign it. Don't rush and sign what they give you. Read every line on the contract to look for errors. As far as the value for the service and work, they were right in the price range I was expecting. Don't hesitate to use them.

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.

Quick response and was able to do a same day dryer vent cleaning, which was great. He even replaced…read morethe venting hose, which had gotten pretty kinked, with one that fit the space way better. Good experience all around.

It's been a number of months, and still mouse-free! David was terrific, very thorough in checking…read moreeverything to make sure there was no new activity. He even said not to worry about any sort of "warranty," that he was so confident about the work that should anything happen, he would come and take care of it. Definitely gave me tremendous peace of mind after being quite worried about my first mouse experience! A lovely, conscientious young man. Highly recommend!

I waited a while before leaving this review because you never really know if a company's service…read morewill continue to meet expectations over time. After five months, I can confidently say that this company has kept their word and stood behind their work. Back in April, I started noticing a lot of droppings in my garage. I carefully read Yelp reviews, received quotes from three different companies, and ultimately decided to go with this company. They responded very quickly, and after they completed the work, I didn't see any more droppings for about five months. Then last week, I noticed droppings again and immediately called them. Nathaniel came out the very next day, found a new hole, patched it, and set new traps. As he was leaving, he simply said, "Keep us posted." That is exactly the kind of service I appreciate. Knowing that I can contact them anytime during the warranty period and that they will actually come back and take care of the problem gives me real peace of mind. It makes me feel that the money I paid was absolutely worth it. Thank you, Nathaniel and the team, for standing behind your work and providing such dependable service!

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.

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

Cristino was incredibly responsive and was able to come by for an estimate and get the entire job…read moredone the very same day! The crew was professional and took great care of my home, laying down plastic all the way from the entrance to the work area to keep dirt and debris from getting everywhere. They cleaned out the crawl space, replaced all of my air ducts, cleaned out the attic, and replaced all of the insulation -- all in just one day. Everything was done efficiently, thoroughly, and at a very reasonable price. I'm really happy with the work and would highly recommend Cristino and his crew!

The team was extremely efficient and they did everything a homeowner needs to have peace of mind…read morefrom cleaning up the old insulation, sanitizing, patching up holes, etc. Cost is reasonable. Highly recommend.