This is long overdue, a number of years ago we had building efficiency come out and assess our…read morehome, I felt like they were so knowledgeable, professional, and informative - it was truly a pleasure. The pricing also seemed extremely reasonable. We ended up doing insulation in our ceilings, such a seamless experience and they supported with the rebate process, had finances not been a limitation we would've done walls. Highly recommend, in fact writing this review has inspired me to loop back with them about their suggestion that our furnace is waaaaay overdue.

Installed my furnace in 2018. They moved my furnace in wall to attic which makes it hard to reach…read more In December 2025 Co detectors fired up twice. Since the furnace should be still under warranty I contacted them by email and phone but no response. Don't be fooled by the yelp ratings. This business is hard to work with after the initial purchase.

Bi-annual visit to check HVAC system and replace filter. Communication is super important to me and…read moreAIS is all over it with the text messaging to remind you and confirm your service and also when your tech is on their way. 5 stars! Once Leon R got to my place, he was professional and courteous, treating my home as if it was his mom's house. He explained what he was going to do prior to service and then explained what he performed after service. I've been a long time customer of AIS and I signed to be their customer for at least another year. Thanks for keeping my HVAC system tip top!

They came gave a great and thorough Diagnosis. Turns out…read morethat the my AC fan motor was bad. They asked if it was still under warranty and offered to either replace it themselves or go with the manufacturer's warranty which i did and it saved me alot of money, even though it meant they wouldn't get the job. So I appreciate them being honest and doing a great diagnosis.

Premier Eco Builders set up my heat pump in my home, and later set up a dual zone so I could have…read moremore control over the temperature in the front versus the back. They are fast and direct to addressing the problem. Recently, the heat pump stopped working - I called and Maddy sent out one of his techs the next day! The tech was great, diagnosing the problem (bad capacitor), acquiring a new part, and installing it all before the sun went down. He also showed me how to work the thermostats correctly to switch over to the backup old gas furnace if needed. Thanks guys!

We have nothing but positive things to say about Premier Eco Builders! A few years back they…read morereplaced our furnace in San Francisco with a state of the art heat pump which we love. They planned the system out well and came to adjust things accordingly in the months post install to ensure it was running perfectly. Recently, prior to selling my father in law's house in Oakland, they installed a vapor barrier that was suggested by an inspector. We needed it done in a timely manner due to the sale timeline and they were responsive, professional and reasonably priced plus they did a fabulous job. Thank you for your service!

I had a Mitsubishi 4-ton heat pump installed at the end of March 2026, and it was done by Sandium…read more Robert Shuper did a wonderful job - he gave me very detailed estimates, explained the whole process and stayed with all questions and issues throughout. The two contractors Manuel and Ernesto also worked very hard, were extremely nice and patiently answered all my questions. When there were issues, the way they managed everything left me very satisfied - they were responsible and professional. Their technicians were also extremely knowledgeable and determined to make sure everything was done right and fully resolved. The entire process was handled seamlessly - from applying for permits to eventually getting the rebate - by professional company. Sandium took care of all of it, so I had nothing to worry about. I am extremely happy, and I'll definitely be referring them to other clients as well!

We have been long time customers of Sandium as their integrity and service have always been top…read morenotch. Noe was just out for a fall service and was knowledgeable and helpful and got us tuned in I will continue to use Sandium for their customer service, knowledge, and integrity

Vincenzo is very professional and knowledgeable. Very easy communicate through messages. He…read morepatiently walked me through the process and treated my place carefully.

Vinny is fast, reliable, and very knowledgeable. I hired him…read moreto do a HERS test and to check the duct leakage. Very happy with the service received and would gladly recommend him. He showed up on time and was respectful of my property and health concerns.

Our roof started leaking during a recent thunderstorm through our Sun Tunnel / skylight. I sent…read morethem a message through Yelp and they responded right away and had a roofer come out within an hour from the initial response. They did a temporary fix which stopped the leak right away and then followed up to come back and redo the shingles to properly install them as it was not installed correctly by the contractor who installed it initially. They also patched several other spots on the roof and we haven't seen any leaks since even with heavy rainfall. Highly recommend.

R E Roofing put a new roof on my house. They were excellent. Superior workmanship. Faultless…read moreproject management. Pleasant to work with. They are a family-owned business with years of experience. I highly recommend R E Roofing.

Calvey is the best in the Bay Area. Starting with their office staff to the techs. They have fast…read moreresponse. They took care of the sock smell that was coming from my AC. Sent someone to my house the same day I called. I definitely recommend for satisfaction.

I am a repeat customer. They had been taking excellent care of my 28+ year old Carrier Furnace…read more But, I wanted to explore replacing for more efficiency. Michael came out to my house and walked me through the pros and cons of a heat pump HVAC. For my home, the extra money made no sense. I really do not need central AC. We then talked about a new Carrier, high-efficency furnace. That was exactly what I needed. I also opted for the Ecobee Smart, wi-fi enabled thermostat. I am extremely happy with everything. The price was right. The installation was flawless. The post-intall QA walkghrough, by Johnny, went really well. ThenI worked with the folks that checked all the boxes post-intalleation. HERS test was easy with a pass.. Today, we passed the inspection, in under 5 minute. Every person I dealt with was amiable and professiona. The office staff always very nice. Michael Calvey was a joy to talk to. Thank you to Johnny, the project manager, and the folks from HOPSTER that facilitated the post-installation test and inspectioin. From start to finish I met with Michael on February 12th. The 16th the new furnace was intalled. February 17th Johnny did the QA walkthrough. February 18th HOPSTER did their pre-test and inspection walkthrough. The HERS test was done February 23rd. March 5th the city inspection was complete. I will continue to use Calvey for annual maintenance

I was thoroughly impressed by Noam's honesty and the qualifications that he had to install my new…read moreHVAC ducts and my attic insulation. I met with three HVAC contractors and Noam was the only HVAC contractor who honestly told me that I didn't need a new furnace, but I needed to remove the asbestos in my attic and get new attic insulation. The other HVAC contractors were not qualified to help me with my attic insulation and one contractor said I had no asbestos, but Noam , who is certified for asbestos removal, said I did have asbestos. I have peace of mind knowing that Noam was honest with me in telling me what I truly needed. His crew also did an excellent job installing my garage roof insulation with a ceiling fan. My garage gets incredibly hot in the summer. I look forward to having a cooler garage and house during the hot summers and a warmer house during the winters. I highly recommend All Bay Insulation & HVAC. My doorbell was not working and when Alonzo from All Bay Insulation & HVAC went into the attic, he discovered that the wire to the doorbell was cut and the wire next to the doorbell ringer was also cut. Since we don't know who cut the wire, Noam offered to have Alonzo install a new wire for free. Alonzo had to break through my kitchen wall to install the wire and when he repatched the wall, the wall looked good as new. You cannot tell that the wall was re-opened to install a wire. My doorbell now works perfectly, and thanks to Noam, I didn't have to pay a cent for this repair.

I was dealing with really bad allergies every time I turned on the heat, and I started to suspect…read moreit was coming from dusty air vents. After some searching, I reached out to All Bay Insulation & HVAC, and I'm so glad I did. I called Noam (the owner) on a Wednesday, and he and his crew Cande came out promptly--actually arriving early and ready to get started. From the moment they arrived, they were professional, knowledgeable, and incredibly patient in answering all my questions. They took great care of my home--wearing shoe covers, taping down the kitchen area, and keeping everything clean and tidy throughout the process. They thoroughly cleaned all the ducts and bathroom vents, and even went above and beyond by cleaning the dryer vent at no extra charge. What really stood out to me was Noam's honesty. He pointed out that a section of my air duct had been squished by someone who had previously been in my attic, and instead of upselling me, he told me it was an easy fix I could handle myself for about $10. It's rare to find someone this trustworthy, detail-oriented, and respectful. I highly recommend Noam and his team--great service, great people, and a genuinely positive experience from start to finish.

I did blow-in attic insulation to R-38 with RB over the insulation in 2019 based on Sam's…read morerecommendation. After the new insulation, I didn't feel any difference in house. The new insulation and RB covering didn't change anything in my two-story house. The heater is still running in cold days. Also, Sam told me that they would do EXTRA blow-in on the existing ducts in upper attic; however his team who did the job didn't do EXTRA on the existing ducts. I told them about the extra blow-in and showed them the picture, but they didn't care. Very unprofessional. (Refer to the picture). I would never ever hire Sam for any jobs because I feel that he just tries to sell his "Green" products through his presentation to get the job. Do not fall for his presentation when he comes to your home to quote you!

We had the attic insulation in our townhouse upgraded by Premium Shield in 2016. Sam and his team…read moredid a great job, in and out all in one day. The little debris on floor was vacuumed up by them. We paid extra to have the reflective shield added. Highly recommended as the shield over the insulation keeps heat inside the house in winter, but keeps summer heat in attic from penetrating downwards on hot days. Our heating bill in winter dropped by 20-28%, and on hot summer days the living areas were cooler.