Get matched with top nest installation pros in Pacheco, CA

"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!"

"My new kitchen floor is beautiful! Josh was prompt with his responses, on-time, efficient, and did a wonderful job installing my kitchen floor. He made sure I had everything I needed for the job, the quote was very reasonable, he even hauled away all of the garbage. Highly recommend!"

"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."

"I'm a Property Manager with over 150+ properties. Peter was great working with the owners and my tenants. He is installing a new heating/ac system and has repaired several other A/C systems at my rental properties. I would highly recommend him."

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.

"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.

One Hour Heating and Air Conditioning of Pleasant Hill is your local service provider. We pride ourselves on our attention to detail, punctuality, reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. Never worry about diagnostic fees keeping you from making the important decisions when it comes to health of your HVAC system. All fees are waived with any work performed. We look forward to earning your business. Give us a call today!

"It went well they installed 50 ft of fencing. They did a great job makes me feel secure with the fencing put up around my home"

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