Get matched with top nest installation pros in Clayton, CA

"Josh helped set up my AC unit . He is very professional and very detail-oriented with his installations. I will definitely call him up again when I need some home repairs/installations done. Very happy with his work!"

"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!"

"Peter was easy to work with, accommodating of our time, and professional. His team was courteous, competent, and friendly. The installation went well. I couldn't be happier!"

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.

Hi, I’m Saul, owner of a local HVAC company serving homeowners across the Bay Area.\n\nWe specialize in AC installation, furnace replacement, ductwork, thermostats, and fast, reliable repairs. Whether your system stopped working, needs an upgrade, or you’re looking to improve efficiency, we provide clear options and honest recommendations.\n\n✔ Upfront, transparent pricing \n✔ Clean, professional installations \n✔ Fast response times \n✔ High-efficiency systems (including Gree R-32) \n✔ Help with rebates and energy savings \n\nOur goal is simple: do the job right the first time and make the process easy for you.\n\nIf you're having issues with your heating or cooling system, send a message and tell me what’s going on—I’ll help you figure out the best solution.\n\nAre you looking for a repair, replacement, or just an estimate?

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."