I had Eco Performance Builders install a ducted heat pump, attic sealing and insulation, and a heat…read morepump water heater at my house last year. I found the experience of working with them to be exceptionally positive. From start to finish, every member of the team I worked with was highly professional, knowledgeable, and responsive. I always felt like I was talking to a friendly expert, not a salesperson. They patiently answered all of my questions and worked with me to create a HVAC system that was perfectly tailored to my house. The installation work was smooth and efficient, and they were able to accommodate a few small change orders (e.g. relocation of a dryer vent) at a reasonable price. Their process for collecting rebates and incentives was very well-managed as well. Overall, I'm very pleased with my new heat pump and water heater. My house feels comfortable year round, and it feels great to live in a fully electrified home. I'd enthusiastically recommend Eco Perfomance Builders to anyone.

I could not be happier with the work that Eco Performance did to plan and install our new ducted…read moreFujitsu heat pump system. The entire team was thoughtful, thorough, and immediately communicative from start to finish. Eco Performance also helped me secure two grants from Alameda County that significantly lowered our out-of-pocket cost. Kyle, who did our initial estimate visit and helped me onboard with the team was a patiently thoughtful listener, and also very kindly put up with my myriad questions and odd sense of humor - much appreciated! Abby did a thorough analysis of our home's needs when she came out to perform the manual J calculation, and she designed what I'm sure will be a very cozy system this coming winter. Nick and the installation crew were competent, tidy, amazingly efficient, and respectful not only of our property but also our geriatric kitty (the real queen of the house). And Denise, the project's coordination mastermind was an absolute rock - answering any question that I had immediately and helping me successfully navigate the nit-picky grant process. The entire team has my strongest recommendation. I feel so lucky to have stumbled across this company, especially for a project of this scope. Thank you!

We have been enthusiastic trusting customers of Hassler Heating services since 2010. They have…read moreprovided a myriad of heating and cooling services. Our most recent experience was with Tevita who created, added and installed a duct in our entry hall of our 1912 Craftsman. He was punctual, knowledgeable, personable and fastidious. We are thrilled and oh so warm. Thank you, Tevita and Hassler Heating! Christine K. Oakland

Made an appointment and then ... They didn't show up…read more Called almost 2 hours later telling me they were not going to make it, asking to re-schedule. Clearly I .... didn't

It was great working with this team! The hers inspections and close out process are complicated and…read morethey made it easy for us! Highly recommend this patient team.

On time, efficient service and did what I needed them to do. Very competitive pricing too.read more

Top Level: Initial screw-up, great recovery…read more Atlas heating installed our furnace nearly 20 years ago and it has worked well until recently. We started having problems with it, so we had a technician come out to perform preventative maintenance. However, less than a week later, it died completely and I could not revive it. I called Atlas, thinking that I would be a priority for service, assuming they would stand behind their work. Instead I was told that I could not get scheduled for service until 5 days later, and the money I had spent on the maintenance was essentially forfeit, as I would receive no credit towards the repairs. Instead, I went with a different company that diagnosed and repaired the problem two days later. After the rather disappointing interaction with Atlas, the owner called and was mortified at how I was treated. She was extremely apologetic and offered to not only refund the cost of the preventative maintenance, but tried to give me even more money for the poor handling of my case. While I did accept the refund, I did not think it fair to take more money. We parted on good terms and when it comes time to replace my furnace (in the near future), Atlas will definitely be part of the process. I would leave five stars, but have to deduct one for the initial poor handling of my case.

We bought in a mid-century house whose furnace is located on the roof . It is a common location for…read morethis type of house, but -needless to say- it is not easy to replace that furnace when the need comes. We decided to hire ATLAS for the job: the furnace was old, and the original roof ducting did a lousy job distributing the heat throughout the house. I was always cold even when the heat was "blasting". ATLAS did a thorough and patient analysis of our old system. They decided to double up the ducts to provide more air flow, and they also organized the flow inside the ducts: it worked. Frankly, the final cost was reasonable, considering the benefits I am getting from it. I particularly recommend Nick and Scott who supervised the project: they really looked into the project, then fixed the problem. Plus: the work was clean, and the communication great all along. Happy customer :-)

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.

Ah! I'm obsessed with Friday! I found her after my coworker started walking around our office with…read morea fancy new glass mug and glass straws talking about eliminating plastic in her home. She then started talking about how much money she was saving every month from all these new light bulbs and this custom emergency kit she was building for her family. So I reached out to Friday for the emergency kit information and ended up hiring her (read: asking my mom to "gift" me her services for my birthday I was so excited) and now I'm obsessed with reducing my carbon footprint and creating a healthier household for my family. What I absolutely love is how easy she makes it to make changes. I think the task of going "green" in your home can seem daunting but with her report with links to everything makes it SO easy!! Every two weeks (i.e. payday) I go into the document and purchase a couple more items for the house and get so excited throwing away / recycling or finding a new use for plastic items. And honestly, a lot of the changes we have made so far are going to save us money! The new toilet paper delivery we have, the new all natural house hold clearer... and the UNpaper towels I'm going to buy... and she's not sponsored by anyone, just finds good companies for her clients. I could go on and on and on, it feels so good to have a plan and to be setting an example for my kids. I highly recommend you hire her!!!!

Friday is the sustainability expert! She has a breadth of knowledge around sustainable ways to…read morelive. She also puts together the most amazing emergency kits. Like real deal emergency kits, they make the ones you buy online look like a joke! I highly recommend her services and would give her 6 stars if I could. Professional, efficient and trustworthy.