So unusually knowledgable, so impressive, so happy to have found Eco Performance Builders…read more The great experience started with instantly talking to someone who could answer questions (usually the person answering the phone isn't so well equipped, or so I have found). Followed by an in house visit by brainy Kyle who can answer lots of questions on the spot. For me that means when I pull the trigger on the heat pump I'm considering, Eco Performance will be my go to.

I can't recommend these guys enough. Huge thanks to…read moreAlberto's team for doing a very thorough job.

It was really great working with Mickey. We found them through the BayREN directory. Mickey was…read morereally helpful, very professional, and trustworthy over the phone, and was very honest about what service we needed. Kim was their team member who came and did the inspection for us. She was very thorough. It was a crazy day when she came because the kids were home, but she was really good with them and answered their questions as well. She was here for about two hours and really did a thorough job. She was very knowledgeable and answered all the questions I had, especially since I do not know this type of work. She was able to explain it in a way that made sense to us, and she did a great job. We are looking forward to the report that we are going to get from them.

Mickey is a trustworthy, expert resource for home energy audits who is happy to follow up to make…read moresure you are satisfied

We recently hired AIS Heating & Air Conditioning to replace our aging furnace and install a…read morebrand-new AC unit, and the entire experience was outstanding from start to finish. The crew arrived right on schedule, fully equipped, and worked efficiently to complete the full installation in just a single day. Beyond the main unit setup, they took the extra time to thoroughly inspect our existing system, proactively identifying and resolving several minor issues with our ductwork, loose taping, and vent airflow. Before wrapping up, they walked us through every feature of our new smart thermostat, making sure we felt completely comfortable programming and managing it. The pricing was transparent and fair, with zero unexpected charges or hidden fees. Best of all, the performance upgrade is immediate--our house now reaches a comfortable temperature within minutes. We could not be happier with the quality of their work and highly recommend AIS to anyone needing HVAC services!

My technician Pete did wonderful job, my outdoor unit compressor failed to kick in, Pete was able…read moredetect root cause and completed repair and installations swiftly. I will recommend AIS HVAC to the neighborhoods

Three years ago, our Nest thermostat developed a glitch, shutting down the heater if we raised the…read moretemperature by more than 3°F. Since it wasn't a major issue, we accepted it as a minor quirk. During this year's regular maintenance, technician Denali Boyd noticed this issue and offered to fix it. Denali visited twice, consulted with experts, replaced the circuit board, and made sure everything worked flawlessly. He genuinely embodies the saying: "Winners find solutions." Thanks to Denali's persistence and professionalism, our heater is finally working as it should. Dedicated professionals like him build a company's great reputation, and we are deeply grateful for his dedication. He earned Hassler Heating another well-deserved 5-star review!

I had their estimator come out to give me an estimate on a new gas furnace, a replacement. They…read morewere pushing the Navien, which I wasn't crazy about because it introduces the additional technology of using water into the system. But, the guy wasn't listening to me, give me this five page estimate that you needed a law degree to get through. Then, the guy tries to put a hard sell on me, which left me cold. Plus, there price was high, so I went with Atlas who was very professional. Finally, I did a bit of research and found out that Hassler was bought out a few years ago by Seer, a group that now owns 23 HVAC contractors.

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.

Atlas Heating and Air Conditioning is the best, hands down! If you need heating and air, this is…read morethe company you want. Why? That is what they do: they're family-owned and have been doing this for a long time. I needed my 40-year-old upstairs and downstairs furnaces replaced and met with a total of 5 companies- one who said they were "family owned" was actually owned by a private equity firm, and another did plumbing and furnaces, and their estimate was 45% over everyone else, and they did not send me a detailed quote- just the total price. From the moment I made the first call, I was impressed: professional, organized. The estimator was great- no hard sell, explained everything in detail; their quote was very reasonable. They answered all my questions, showed up on time for the install, did the work efficiently, and everything works great. The permit and inspection went smoothly; they were there throughout the entire process. Super impressed and appreciative; Atlas was easy peasy to deal with. Don't look any further.

We just had Atlas replace our 35 years old gas furnace. I'm a retired GC, and I've got to tell…read moreyou, these guys are the best of the best! From my first contact with Aaron and his clear, concise bid to the field prep visit by Scott to the two days the high competent and respectful days the installers spent here, it was a joy. Honestly, in my entire career as a general contractor I never had the experience of dealing with a subcontractor who got it 100% right like Atlas did. And, as a footnote, they send out a very nice little box of cookies at the end of the job. Go Atlas!!

Phenomenal experience from start to finish! I submitted an…read moreonline request for an estimate and Emily got back to me almost immediately, letting me know that Joe was out on a job but would contact me later. About 30 minutes later, Joe texted to say he would call at 2:00 -- and he did! We arranged an onsite estimate, and from the moment I met Joe, I was impressed. He listened to what I was trying to accomplish, answered all of my questions, explained my options, and made me feel both heard and informed. He also had a newer team member with him whom he was training, and I was equally impressed by the patience and care he showed in teaching him. I received three bids for my attic insulation project, and I chose SDI hands down because of my experience with Joe. From there, Alfredo was terrific to work with. He worked with my schedule to find a day that worked for me and was incredibly easy to reach by phone or text whenever I had a question or needed to confirm details. On installation day, Sergio, David and Miguel were fantastic. They arrived, got everything set up and went right to work. They were careful with my home, incredibly thorough, and when I had questions, Sergio took the time to come down, talk with me and then personally went into the attic and took a video so I could see the completed work. And when they were finished -- no muss, no fuss. Everything was cleaned up beautifully. They even touched up the paint around the attic access where they had been working. Other than having a newly insulated attic, you wouldn't have known a crew had been working in my home all day. The entire SDI team -- from Emily and Joe, to Alfredo, to Sergio, David and Miguel -- was responsive, professional, knowledgeable and genuinely pleasant to work with. This team was amazing, and I would absolutely recommend SDI.

A very positive experience! We just has SDI insulate the exterior walls of our 1960's-era Belmont…read morehills home, and I was very impressed with the work they did. Their communication with me was excellent, and everyone I interacted with was extremely professional and very skilled in their respective tasks. Big thanks (!) to Joran, Sergio, Gene, David, and the other crew members whose names I didn't get. TY! I feel very comfortable recommending SDI's work - they did what they said they would do, and they did it quickly and professionally! Their estimate was competitively priced; it was neither the cheapest nor the priciest., but all things considered, SDI seemed to offer the best value for our money. I'm also very pleased with the results of the insulation! We had R15 fiberglass blown into our exterior walls, and even after just one night I can tell the house is much quieter. Today's outside temp has been in the mid-50's, which is chilly for early May, so I'm able to write this review with oddly good timing: new insulation works, lol! I'm now very eager to see what it does in the summer heat, which was our main reason for having it blown in. All in all, I am very pleased with the SDI did on our home and feel quite comfortable recommending their services to other homeowners.

Our experience with American Attic was great. Luis , who I mainly communicated with, came to do our…read moreinspection. He was great and gave us a good overview of the condition of our attic. We met with 3 different companies and went with American Attic because they had the lowest estimate and were willing to take care of a couple things that were missed on the initial estimate for the same price. I appreciate their professionalism, thoroughness and cleanliness. We now have peace of mind that our attic is mess and rodent free and well re-insulated. Thank you to Luis and his team who diligently worked hard and in such a hot environment, that is our attic i might add.

We had rodents living in our attic, so we hired American Attic to rodent-proof our home, remove the…read moreold insulation, and install new insulation. From start to finish, the experience was excellent. Luis performed the initial inspection and was professional, knowledgeable, and thorough. He took the time to explain the entire process in detail and answered all of our questions, which gave us confidence in the work being done. His crew was friendly, trustworthy, hardworking, and very efficient. They completed the job with great attention to detail and did a thorough job cleaning up the work area before they left. We also appreciated receiving before-and-after photos so we could see the results. We are very happy with the quality of their work and highly recommend American Attic to anyone needing rodent-proofing or attic insulation services.

I contacted Sapling after receiving a letter about their service. I was a bit skeptical but after…read moretalking to Kristian I was very impressed. He took over an hour to very patiently go over our PG&E bill, how our solar system impacts the bill, and various ways to save. He was extremely knowledgeable and professional -- and super smart -- so it was an informative and enjoyable experience, learning more about my family's energy use and how to save money. I would strongly recommend Sapling to anyone who has solar but isn't really sure if they are getting the most of it, or not sure how they might enhance it.

The service my husband and I requested was to have our energy bills, especially our True-Up charges…read morethat Pacific Gas and Electric makes us pay yearly in one lump sum because we have solar panels, analyzed for a possible way to lower our electric and gas bills! Sapling Energy mainly deals with electric bills though! Colin Shipley, the Sapling Energy representative was very thorough and took the time to answer all our questions, even ones about buying an electric car and the cost of the electricity that would involve! We feel completely satisfied about the time that the consultation took and the service provided!

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.