Get matched with top thermostat installers and replacers in Pleasant Hill, CA

"Perfect Star has excellent technicians who can do installations & any service needs. They installed a new AC/heating system a few months ago. I intend to hire them again to update the ductwork in my residence. Tech was out today to tweak the thermostat setting to get max AC flow."

"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!"

"Peter evaluated the drainage problem with the old furnace system and suggested a cost effective solution. We decided to install a new furnace unit rather than simply correct the problem. Work was done on schedule."

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.

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.

R Maintenance\n\nAbout Us At R Maintenance , we pride ourselves on delivering top-notch home repair and maintenance services.\n\nOur Services\n\nPlumbing\nElectrical Work\nCarpentry\nPainting\nGeneral Repairs\nWhy Choose Us?\n\nExperienced and Skilled: Our team has the expertise to tackle any job, big or small.\nReliable and Trustworthy: We show up on time and complete the job to your satisfaction.\nAffordable Pricing: We offer competitive rates and free estimates.\nCustomer Satisfaction: Our work is guaranteed, and we have numerous positive reviews from happy clients.\nContact Us\n\nPhone: (925) 956-3017\nEmail: aaronrivassr@rivasmaintenance.com\nWebsite: www.rivasmaintenance.com

"Tyndall is a great company. We are very happy with the Mitsubishi heat pump system they installed, providing heat and AC to our home."

"Rich is very professional was on time and did a great job installing the bracket. He is coming out now to install an interior door for me next. Highly recommend"

"Ilan Yosef was incredibly helpful during our bathroom remodel. He listened carefully to our ideas and made sure every detail was completed perfectly."

"The sales man that came out to give an estimate showed up right on time and was fabulous. The installer that installed the furnace did mediocre work. I called and complained and another installer came out and fixed and cleaned up the issue. Overall I was very satisfied with their customer service they addressed the problem right away and their pricing was reasonable."