"HVAC is directly related to health. They removed the old ducts and installed new ducts and a brand new HVAC system. They also installed a nest thermostat. They are extremely professional, came on time, finished in two days as they had promised., gave me plenty heads up on the arrival of technicians, start and stop, were very conscious of Covid protocols and did follow up. I bought their annual membership. They took great care of me and with the membership, I know I will be taken care of! I will use them for my other properties and give my highest recommendation! Thank you perfect star!"

"Josh did a great job on my roofing repair! He showed up when he said he would, and the roof looks great! He also installed some replacement skylights and siding. He sent many pics of the job as I wasn’t able to be there when the work was performed. I will definitely use him again."

"Had an excellent experience having my 77-inch TV mounted. Gilberto was incredibly kind, professional, and respectful throughout the entire process. Communication was clear and prompt, and the work was done carefully and efficiently. You can tell he takes pride in his work. I would absolutely hire him again and highly recommend his business."

"Overall experience was average. First day of installation was okay until I find out half of the house did not have power. Edgar came back the next day and explained the cause and fixed it with ease. Was getting push back about how everything was installed as it was and there shouldnâ t be any issues, well there was and he graciously came back and fixed the problem. I would definitely use this company in the future."

We take great pride in our experience, expertise, quality and customer service that we provide to meet the consumers? needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"Elsy ( I believe she was the plumber from your company via Angi) arrived as scheduled, on Saturday, 09/28/2024. She attempted to repair my garbage disposal unit but was unable to do so as the unit's wiring was worn out. I advised the unit is 40 yrs old. She recommended to purchase a new one. We made a trip together to the local Home Depot store and I purchased the same brand s she recommended. She installed it in record time (within the 2.5 hrs) and completed the job. She also cleaned the work space and carried the old one to my recycling bin. Very satisfied with her work. Also, I want to know if I will receive a billing statement for my records? Thank you for your time & assistance."

"It went very well. They went above and beyond with their services.They also looked at our ceiling and had recommendations. We will definitely be using them again. Thank you for your good work"

Since 1999, Hassler Heating and Air Conditioning has helped East Bay homeowners stay comfortable with energy-efficient heating and cooling solutions built to last. We specialize in full system replacements, heat pumps, ductless mini-splits, and high-performance home upgrades designed to lower energy costs and improve year-round comfort.\n\nHomeowners choose Hassler for honest recommendations, expert system design, and clean, professional installations. Whether you need a fast repair or a complete system upgrade, our team focuses on long-term solutions—not quick fixes.\n\nServing Alameda, Contra Costa, and Marin counties, we’re committed to doing the job right the first time, with quality workmanship you can trust.\n\nCall today for expert service and a smarter, more efficient home.

"They installed copper pipes for my water heater. They were recommended to me by a family member and I was not disappointed. They made sure to update me frequently and even gave me some input. They do great work ."

"Tenants were happy though all seven units were occupied during installation."