When we bought our house many years ago I discovered a thin layer of blown in cellulose insulation…read morein the attic. It wasn't very even and being a bit of a handy man I added fiberglass batts over top. That made our house more comfortable. But since then we've had a couple of remodels, new roof, etc. In recent summers we noticed that the skylights in our house were much hotter than we remembered them being so one day I climbed up in the attic and saw that some areas had no insulation while others had far more than was needed. We decided we needed to have the insulation "fixed" - whatever was needed. A few weeks ago I called OJ Insulation in Morgan Hill. One of their estimators replied with a time to come by and we soon had an estimate. He agreed that we had plenty of insulation and it just needed to be "touched up"- which meant the guys would rearrange existing fiberglass to fill holes, put more strapping to hold batts thad shifted (like the skylight tunnels), etc. It wasn't practical to walk the entire attic to see exactly what was needed, so he gave me an estimate based on the living space - about $1/sq. ft. We got a time slot a few days later and on the morning a two man team showed up a few minutes early. They confirmed what I had asked to be done and they got to work. They took before and after photos which is helpful. They cleaned up and left the area spotless. It's been a couple of weeks since and we've had some hot days and I'm happy to report that there are NO hot spots in my house any more. Good job guys! Remember the estimate based on square footage? The estimator thought it would take the team 3-4 hours of work and I signed a contract of that amount of work. However, the guys were able to finish in about half that amount of time. I mentioned this to the estimator via email afterwards. He was surprised but gave me a discount on the price. I was pleased. On the basis of good work by their team and honest dealings by the management I am happy to recommend OJ Insulation.

They did an amazing job. Came to quote within 24hrs of me calling. They had the job done in a…read morecouple days and I couldn't be more impressed with the quality. They are very professional and have a great team. They definitely know what they are doing. I highly recommend them for any of your insulation needs. I will be having them come back to do the garage next.

Em energy did a great job in a very professional and timely manner. They identified and…read morecommunicated the problem, offered solutions and a plan. Once approved, they immediately booked the next available slot and a their team completed the job very quickly and well. I highly recommend them!

Sebastian came out and took a look at my attic. I wanted new insulation and a whole house fan…read moreinstalled. He was very efficient at reviewing the current status and came up with a suggestion for a plan for what to install. He considered not just the attic but the geometry of the house as a whole when sizing the fan, and I am very satisfied with the results.

Great great service the technician Jose Duarte was very professional and went above and beyond I…read morerecommend this company 100/100 there prices are unbelievable and so affordable and very professional company, affordable, and dependable will not use any other company, but this one

Let me begin by saying that Ryan and his crew are extremely trustworthy and professional. I am an…read morearchitect and well-versed in air sealing, but I did not have personal experience with removing old fiberglass batt insulation and installing only two inches of closed-cell insulation. In our 1868 Victorian home, Ryan and his crew removed all of the old fiberglass insulation from remodels we'd done over the years and installed closed-cell insulation in the attic ceilings and floor. I'll admit that when I saw the large amounts of old insulation being removed, I seriously wondered if I had made the right decision. Rather than jumping to conclusions, I waited until I could compare our December 2024 PG&E gas bill with our December 2025 bill. Since we heat our home with a gas furnace, my focus was on gas usage rather than electricity. In December 2024, our house was cold--uncomfortably so. The furnace cycled on and off constantly throughout the day, and we experienced significant temperature swings. The old insulation simply could not hold heat. Fast forward to December 2025. While our gas usage in therms was similar, the outcome could not have been more different. Our home is now warm and comfortable. We keep the thermostat at about 72 degrees during the day, and at night we set it to 62--yet the temperature holds steady around 66 degrees all night. In other words, the heater doesn't even come on after we go to bed. The result is a dramatically more comfortable home with no increase in gas usage. I expected our December 2025 bill to be through the roof, but instead it remained essentially the same--with vastly better performance and comfort. I couldn't be happier with the results. I'm so glad I put my trust in Ryan. We finally have a warm home during the coldest month of the year, and going forward we will be using less therms per month.

Max was very prompt during the estimate phase. After approving the estimate, setting up a date to…read moredo the insulation work was very easy We got about 1.7k sqft insulated and an attic fan installed Overall, very pleased with their service and would recommend them for insulation and other attic work

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!

Good price. The guy coming over is polite and patient. Nice follow up. Would recommend.read more

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.

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.

John and his team did a very good job. There were a couple of minor hiccups but John was quick to…read morefix the issues. They came on time and worked very hard, cleaned up after the job. I would recommend them YES!

Professional and timely work Work was completed as promised…read moreWork in progress communication as each step of the work was completed was done Pictures were sent of work Post work follow up was provided Definitely recommend, and will do business with them again.

Attic Star has truly earned a spot on our list of trusted contractors thanks to their fair and…read morehonest approach. When I first peeked into my attic, I swear I heard horror movie music playing. Then Jay came along, super calm, confident, and armed with a crew that clearly loves what they do. His proposal stood out as by far the fairest and most transparent. We were shocked at how some of the other companies tried to take advantage. They turned that creepy space into something that almost look livable. Old debris and loose wires were handled and the insulation was leveled out properly. Work was done carefully and the area looked much better once they finished. Literally it's so clean that you can sleep there.. not that I would lol but just saying.. I would recommend Jay and the entire crew at Attic Star. Great crew, great company and great results!!!

Attic Star did a fantastic job on our attic. Attention to detail, professional, personable, and a…read moreclean job, great company. They get all the debris out, clean, close up openings and install insulation. They did not leave any debris in or out of our house. They also take pictures so you can see the results. Highly recommend.