Areas served: Berkeley, CA and surrounding East Bay communities including Albany, Kensington, Oakland, and Emeryville
Berkeley's Mediterranean climate creates unique HVAC demands, with mild winters requiring efficient heating systems and increasingly warm summers driving cooling needs. The city's older housing stock, including many pre-1950 homes, often requires specialized knowledge for retrofitting modern HVAC systems while preserving historical character. This directory covers licensed HVAC contractors serving Berkeley and the East Bay, evaluated on technical expertise, energy efficiency certifications, and familiarity with local building codes and permit requirements.
Precision HVAC Heating & Air Conditioning is owned and operated by Bobby Jones, an Oakland native with 14 years of HVAC experience who founded the business in 2018. They specialize in residential and commercial heating, cooling, and indoor air quality services across the Bay Area, including mini split ductless systems, sheet metal fabrication, and complete HVAC installations. With a 4.9-star rating from 41 Google reviews and California contractor license #1047076, they serve Hayward and surrounding East Bay communities with trusted expertise.
“I would highly recommend Precision HVAC Heating & Air Conditioning for any services they provide. Bobby and AJ are skilled professionals that take pride in their work, are reliable, and straight up great guys. It was obvious that both Bobby and AJ enjoy what they do! They replaced my furnace which also entailed removing the access door framing. They replaced the framing with new materials and caulked the seams like the original framing. I was in the trades so I know what a good contractor is. You won’t be disappointed if you chose Precision!”
— Don Carlson, Google Review · 4.9 ★ avg from 41 reviewsConnolly Heating and Air Conditioning is a family-owned HVAC contractor serving Pacheco, CA and the surrounding East Bay area. With a perfect 5.0-star rating from 264+ Google reviews, they specialize in residential and commercial heating, air conditioning, and ventilation services including installation, repair, and maintenance. Known for honest pricing, quick response times, and personalized service from experienced technicians.
3rdGen Building Systems (CA License #1086898) is a Bay Area commercial HVAC and design-build mechanical contractor specializing in VRF systems, tenant improvement HVAC, heat pump retrofits, and electrification upgrades. With a perfect 5.0-star rating from 160+ Google reviews, they serve commercial and residential projects across San Francisco, Oakland, Berkeley, Marin, Walnut Creek, and the Peninsula. Licensed contractor delivering disciplined execution, coordinated mechanical planning, and performance-driven systems for light commercial construction, adaptive reuse, and all-electric conversions.
Hometown Heating and Air Conditioning is a family-owned, veteran-owned HVAC contractor serving Concord, CA and surrounding Contra Costa, Alameda, and Solano Counties. Run by the Waskow-Lobban family with EPA-certified technicians, they've been Diamond Certified for seven consecutive years and hold a 4.9-star rating from 2,500+ reviews. They specialize in 24/7 emergency HVAC service, full system replacements, heat pumps, ductless mini-splits, and indoor air quality solutions, all backed by a 100% satisfaction guarantee.
“We just bought a new home and wanted to get our HVAC checked out. When we ran the heating system during a cold snap we found ourselves coughing. We figured the filter needed changing and possibly the furnace needed cleaning. Sure enough both of those things needed to happen. Our technician, Andrew, did a fantastic job checking out our system and explaining everything to me. I’m really happy that I chose Hometown Heating and Air Conditioning for our HVAC needs.”
— Joyce Gates, Google Review · 4.9 ★ avg from 2553 reviewsPerfect Star Heating, Cooling, & Electrical is a family-owned HVAC and electrical contractor with over 30 years of experience serving Alameda and Contra Costa Counties in California. As a Lennox Premier Dealer, Daikin Comfort Pro, and WellAir Elite dealer, they specialize in furnace/heating, air conditioning, ductless mini-splits, electrical repair and installation, solar installation, ductwork, and indoor air quality solutions. Diamond Certified with an A+ BBB rating and voted Best HVAC Service by SFGATE, they offer 24/7 emergency service and free estimates for system replacements and installations throughout the East Bay.
“Nick is a very kind and competent professional who answers all questions and concerns with complete accuracy. Modern HVAC systems seem to require a systems engineering degree to service them, and Nick has no issues dealing issue of a faulty sensor that caused the blower fan to run continuously at high speed. The issue has been addressed, now we will see how long it stays fixed. This was warranty service on a system that is less than two months old.”
— Roger Henderson, Google Review · 4.9 ★ avg from 2420 reviewsCabrillo Plumbing, Heating & Air has served the San Francisco Bay Area since 1961, providing 24/7 emergency plumbing, HVAC, and electrical services. Their licensed technicians specialize in heat pumps, ductless mini-splits, sewer camera inspections, and water heater repairs, with fully-stocked vehicles to complete most repairs in one visit. With a 4.9-star rating from over 1,100 reviews, they're known for flat-rate pricing, same-day service, and handling the unique challenges of Bay Area homes — from historic Victorians to modern builds.
“We had an outstanding experience with Cabrillo Heat & Air and Plumbing, and I cannot recommend them highly enough. They replaced our entire home heating system and added a new filtration system, and the quality of the work was exceptional from start to finish. On the plumbing side, they were absolute lifesavers. They fixed a long-standing clog in our master bathroom that two other plumbing companies had given up on, leaving us without a working shower for over half a year. Cabrillo’s team was knowledgeable, persistent, and solved the issue when others couldn’t. The crew was extremely professional, respectful of our home and space, and clearly very experienced. As an added bonus, they flushed our water heater at no extra charge, which really showed their integrity and care for their customers. Special shoutout to Robert and Rodolfo, who worked on our heating system — they were fantastic to work with. If you’re looking for a trustworthy, skilled, and thorough HVAC and plumbing company in San Francisco, Cabrillo Heat & Air and Plumbing is the one. Highly, highly recommend!”
— Vicky Yee, Google Review · 4.9 ★ avg from 1157 reviewsAIS Heating & Air Conditioning is a family-owned HVAC company serving Fremont, Livermore, and the broader Bay Area since 2008. Their team of certified technicians specializes in installation, repair, and maintenance of all major heating and cooling brands, plus comprehensive indoor air quality solutions including air purifiers, humidifiers, and ductwork services. With 24/7 emergency service, transparent pricing, and a 4.9-star rating from 750+ Google reviews, AIS has built a reputation for quality workmanship and superior customer care in the local community.
“Art always returned every phone call and email promptly. I appreciate how much time, effort, and importance he placed on our order. Thanks again to him and his Team for their professionalism and excellent job. For our experience with AIS Heating and Air Conditioning Company, I am extremely impressed with the technicians, Fausto and Abel. Before the installation, they communicated with us thoroughly, patiently listening to our needs and offering professional advice. They addressed the removal of an old Gas Furnace and replaced it with a new Heat pump system. They worked hard, climbing into the attic and crawling through tight spaces, and did an excellent job. Once the system was in place, they carefully explained to us how to operate it. They are very professional and knowledgeable about the Heat Pump system. The installation looks tidy, and they did a fantastic job cleaning the site. Thanks again for their hard work and excellent job. I would highly recommend them and the AIS Team to anyone interested in Heat Pump installation. The final Heat Pump installation exceeded our expectations. Awesome!”
— Daniel Allan B Saul, Google Review · 4.9 ★ avg from 756 reviewsAtlas Heating and Air Conditioning is a family-owned HVAC company serving Oakland and the East Bay since 1980. Founded by Jerry Newberry and now run by Steve Newberry, Atlas specializes in high-efficiency heating and cooling system installation, furnace and air conditioner repair, and ductless mini-split systems. Known for honest diagnostics, transparent pricing, and zero-pressure sales, they hold a 4.9-star rating from 575+ Google reviews and are Diamond Certified for quality service.
TECHNO HVAC and REFRIGERATION is a family-owned heating, cooling, and refrigeration service company serving Pleasant Hill, CA and the East Bay. With a 4.9-star rating from over 540 Google reviews, they provide 24/7 emergency service, residential and commercial HVAC repairs, installations, and maintenance. Known for fast response times, transparent pricing, and licensed technicians, TECHNO specializes in both comfort systems and commercial refrigeration equipment.
Hassler Heating and Air Conditioning is a family-owned HVAC contractor serving El Cerrito, Berkeley, and the greater East Bay since 2005. Led by licensed technicians with decades of combined experience, they specialize in furnace and air conditioner repair, replacement, and maintenance for residential and light commercial properties. Known for transparent pricing, same-day emergency service, and expertise in both modern high-efficiency systems and vintage Bay Area home retrofits, Hassler maintains a 4.9-star rating from 514+ Google reviews.
“I’ve used this HVAC company for my annual maintenance for several years, and the service is consistently excellent. My technician is knowledgeable, respectful of my home, and always takes the time to explain what he’s doing and why. He keeps my system running efficiently and gives me peace of mind heading into the hotter months. It’s rare to find this level of care and integrity—highly recommended.”
— ampsson ampsson, Google Review · 4.9 ★ avg from 503 reviewsCalifornia HVAC is a licensed, insured, and Google Guaranteed contractor serving Oakland and the surrounding 75-mile radius with 35 years of experience. They specialize in residential and commercial HVAC repair and maintenance, commercial kitchen hood installation, and walk-in cooler/freezer service. Available 24/7 for emergencies with business hours Monday-Friday 8am-5pm, their expert team delivers meticulous climate control solutions for homes and businesses throughout the Bay Area.
“Jorge & his team were so helpful installing our new furnace, and were very throrough with their safety tests to ensure we won't have any issues. I would recommend them for your home heating needs!”
— Rachel M, Google Review · 5 ★ avg from 61 reviewsSmart Heating and Air Conditioning is a full-service HVAC contractor serving Concord, Pittsburg, and throughout Contra Costa and Alameda Counties. Their certified technicians are available 24/7 for emergency repairs, preventive maintenance, and complete system installations. With a 4.9-star rating from 335+ Google reviews, they're known for transparent upfront pricing, flexible payment options, and a 100% satisfaction guarantee on every job.
“Mike from Smart Heating and Air Conditioning is an exceptional professional and an even better human being. He truly cares about his customers and is dedicated to helping you solve any HVAC issue with honesty, patience, and expertise. His knowledge of the field is impressive, and he always looks for the most effective, long-term solutions. I hired his team to rework our duct system in our home in Piedmont, and they did an outstanding job from start to finish. Communication – Mike and his team are responsive, organized, and consistent. They use technology effectively to keep you informed, whether it’s scheduling, updates, or notifications when a technician is on the way. Service – The HVAC crew was professional, respectful, and genuinely willing to help. They took the time to answer every question and made sure we understood the work being done. Quality – Mike oversees every phase of the project to ensure his team meets high-quality standards. He follows all codes and regulations and takes pride in delivering work that’s done right the first time. Cost – Pricing was transparent, fair, and clearly explained with no surprises. I highly recommend Smart Heating and Air Conditioning and would gladly work with them again in the future.”
— Giancarlo SC, Google Review · 4.9 ★ avg from 335 reviewsBreathable is a locally owned HVAC and indoor air quality contractor founded in 2010 by Nir Biderman, serving the Bay Area with a whole-system approach to home comfort. They specialize in heat pump installations, air duct cleaning and replacement, duct inspection and repair, and whole-house air purification systems. Licensed (CSLB 979977), bonded, and insured with $2,000,000 coverage, Breathable has completed over 20,000 projects across six Bay Area counties with a 4.9-star rating from 1,700+ reviews.
“A year ago, Breathable did a great job cleaning my home’s air ducts and installing an upgraded furnace filter. What a difference—fresh indoor air! Nir Biderman, the owner, is an excellent communicator before, during, and after projects. He keeps in touch with customers to share relevant information, including the timing of furnace filter changes. No matter how often I called with assorted questions, he replied promptly and patiently. So when Nir contacted former clients to say he had acquired a limited number of mini-split ductless units, I reached out immediately. He arrived the next day to assess my home (in Oakland). The pricing was better than expected, and he also let me know about an available tax credit for the 2025 tax year. After discussing three options, we decided on individual units for two second-story bedrooms—a ductless heat pump system installation that finally solved our long-running “should we do AC?” debate. After procrastinating for years about air conditioning during East Bay heat waves, this was the chance to go for it. The crew did a fantastic job—not only with their hard work, but also with respect for the property (shoe covers indoors, great clean-up inside and out) and a clear explanation of how to use the units for heating and cooling. Thank you, Nir and the entire Breathable team!”
— Rebecca M, Google Review · 4.9 ★ avg from 224 reviewsOakland Furnace Heat & Air Conditioning is a trusted HVAC contractor serving Oakland and the East Bay with expert furnace repair, air conditioning installation, and heating system maintenance. With a 4.9-star rating from 121+ Google reviews, this locally-focused team specializes in residential climate control solutions, emergency repairs, and energy-efficient system upgrades. Based in the Piedmont Avenue neighborhood, they're known for responsive service and skilled technical work on all major HVAC brands.
Ariston Heating & Cooling is a family-owned HVAC contractor serving the East Bay since 2017, specializing in heat pump installations, AC repair, and full electric HVAC systems. Run by licensed C20 contractors, they're an authorized American Standard dealer and Diamond Certified with a 4.9-star rating from 93 reviews. Serving Orinda, Walnut Creek, Concord, Oakland, and throughout Contra Costa County, they focus on honest advice, high-efficiency systems, and no-pressure service.
“I had to relocate my vent fan and Ariston Heating/Cooling had the best customer service and had competitive prices! They came out really fast for the job. Aghiles and Alejandro did an awesome job and their work was really clean. Amazing job and highly recommend!”
— R. Davis, Google Review · 4.9 ★ avg from 93 reviewsBell Brothers is a full-service home contractor serving Sacramento and the East Bay since 1992, specializing in plumbing, HVAC, electrical, and window services. With a 4.8-star rating from nearly 11,000 Google reviews, they've built a reputation for transparent pricing (No Surprise Guarantee), meticulous workmanship (Better Than We Found It Guarantee), and comprehensive service backed by their Bell Rewards membership program. Their team handles everything from emergency plumbing repairs to complete HVAC installations across the greater Sacramento region.
“Tech was on time, very polite and efficient. He was nice to my small dogs Install team for new HVAC was superb! Showed up on time, worked efficiently and got the new machine installed neatly and without stress. All debris was in a neat area and picked up the next morning. Great experience. The insulation crew did a great job. Showed up on time, did their magic and were gone before I knew it! Polite and didn't tear up my house or yard.”
— Beverly Borghi, Google Review · 4.8 ★ avg from 10936 reviewsService Champions is a full-service home comfort company serving Pleasanton and the East Bay since 2003, offering 24/7 heating, cooling, plumbing, electrical, and drain services. Their licensed technicians provide expert repair, maintenance, and installation for furnaces, air conditioners, water heaters, electrical systems, and plumbing, with same-day service availability and comprehensive permit handling. With a 4.8-star rating from over 2,300 Google reviews, they're known for reliable emergency response and energy-efficient home solutions across Alameda County.
“Service Champions serviced my systems again this year as part of my MVP package. Always a great deal for the subscription. The technician was on time and even had a manager present as part of Service Champion's quality control processes. i was impressed as usual with the professionalism of the technician, Hector, and his communication both before arriving and while working.”
— Phillip Weiss, Google Review · 4.8 ★ avg from 2377 reviewsGalaxy Heating & Air Conditioning is a fully licensed HVAC contractor (California B, C-10, C-20) with over 15 years of experience serving Contra Costa, Alameda, and San Francisco counties. As an American Standard Platinum Customer Care Dealer and Mitsubishi Diamond Contractor, they specialize in same-day heating repair, heat pump installation, AC service, and emergency HVAC work for residential and commercial clients. With 24/7 phone support, NATE-certified technicians, and 1,350+ five-star reviews, Galaxy delivers expert HVAC solutions across 50+ Bay Area cities.
“My experience with Galaxy has been top notch. The initial sales rep, Jeff was knowledgeable and experienced. The installation technicians, Ramiro, Mogamed, and Vladyslav were conscientious, efficient, and performed the installation in a timely manner. I have been quite happy with their services. I would recommend Galaxy HVAC for your heating needs.”
— Ray Chung, Google Review · 4.8 ★ avg from 384 reviewsNext HVAC & Appliance Repair is a licensed, EPA-certified HVAC and appliance repair company serving San Francisco and the Bay Area. Led by a team of trained technicians, they specialize in furnace repair, air conditioner installation, commercial refrigeration, and residential appliance service with warranties up to 3 years. With a 4.8-star Google rating from 361 reviews, they offer same-day service throughout San Francisco, Daly City, Berkeley, Oakland, and surrounding communities.
“Steve from Next HVAC was a nice guy and honest too. The furnace was getting an overheating error code the past 1.5 weeks. But when he came to diagnose the problem the furnace starting working again. Instead of charging me some fictitious repair fee, he just charged me the $70 diagnostic fee which was already disclosed upfront. The furnace probably started working again because I emptied the bucket of water where the HE condensate hose was going into a few days before Next HVAC's service call. A few years earlier Innovative Mechanical came to inspect the furnace and all their tech did was remove the condensate hose from the bucket and he ended up charging me $335 for being there 1hr 15 minutes. Next HVAC was at my house maybe 45-60 minutes. Safe to say Innovative Mechanical got their money but lost a customer forever while Next HVAC gained a customer that will be calling them the next time I need a furnace repair or replacement.”
— Calvin Lee, Google Review · 4.8 ★ avg from 360 reviewsABC Cooling, Heating & Plumbing is a family-owned HVAC and plumbing contractor serving Hayward and the greater Bay Area since 1980. They specialize in air conditioning repair and installation, heating system service, water heater replacement, and emergency plumbing — with a team of licensed, factory-trained technicians available 7 days a week. Known for transparent pricing, same-day service, and a 100% satisfaction guarantee, they hold a 4.8-star rating from 220+ Google reviews and serve residential and commercial clients throughout Alameda County.
Comfy Heating & Air Conditioning is a family-owned HVAC company serving San Leandro and the greater Bay Area since 1998. Led by experienced technicians with NATE certifications and EPA universal licenses, they specialize in residential and light commercial heating, cooling, and air quality systems — from emergency repairs to complete system replacements and duct sealing. With a 4.8-star rating from 121+ Google reviews, they're known for transparent pricing, same-day service availability, and true 24/7 emergency response throughout Alameda County and beyond.
“I am a repeat customer of Comfy Heating & Air Conditioning, and for good reason. Austin and his team first helped us with a furnace installation in our previous home, handling everything from the initial setup to the final inspection flawlessly. When we moved into our new house and needed a new furnace, there was no question about who to call. As expected, they handled the entire process with the utmost professionalism. Being a family-owned business, they truly care about their reputation. Their team is incredibly knowledgeable, and their prices are consistently lower than other quotes I’ve received—without ever sacrificing the quality of the work. I’ve recommended them to several friends who have all had similarly great experiences. Highly recommended!”
— Kaustabh Choudhury, Google Review · 4.8 ★ avg from 120 reviewsMitch & Sons HVAC is a family-owned heating and cooling service provider serving San Francisco and the surrounding Bay Area. With a 4.9-star rating from 37 Google reviews, they specialize in HVAC repair, installation, and maintenance for residential properties. Known for responsive service with extended 7-day availability and deep knowledge of the unique climate control needs of San Francisco's diverse housing stock, from Victorian homes to modern condos.
Albert Nahman Plumbing, Heating, and Cooling is a family-owned company serving the Bay Area since 1981, with multiple technicians boasting 20+ years of experience. They specialize in 24/7 emergency plumbing, HVAC repair and installation, drain cleaning, water heater service, and trenchless sewer line repair across Berkeley, Hayward, and surrounding communities. With a 4.7-star rating from 3,300+ Google reviews, they're known for transparent pricing, same-day service availability, and comprehensive maintenance plans. Licensed contractor #1083634.
“Highly recommend Albert Nahman Plumbing! The customer service was excellent from start to finish—from the receptionist who handled my initial call to the knowledgeable technician, Deandre P., who arrived within two hours. Unlike several other plumbing companies I contacted, Albert Nahman did not charge for travel time. They were also offering a February promotion for free diagnostics, which was greatly appreciated. Deandre P. was professional, thorough, and patient. He carefully inspected the pipes and water lines and clearly explained his findings. Although no plumbing leak was identified and the issue appears to be related to a large rainwater stream under the house, I valued the honest assessment and the time he took to investigate the problem. I was not charged for the visit. Overall, Albert Nahman Plumbing demonstrated integrity and outstanding customer service.”
— Judy Sarmiento, Google Review · 4.7 ★ avg from 3355 reviewsAir Flow Pros Heating & Air Conditioning is a family-owned HVAC company serving San Francisco and the Bay Area with expert heating, cooling, and air quality solutions. They specialize in high-efficiency systems (up to 24 SEER2), Mitsubishi Electric installations, heat pumps, duct-free systems, and indoor air quality upgrades including UV lights, ERVs, and HRVs. With 24/7 emergency repair service, BBB accreditation, flexible financing, and a 4.7-star rating from 45+ Google reviews, they combine personal service with professional expertise to keep Bay Area homes comfortable year-round.
Harry Clark Heating and Air Conditioning is a locally-owned HVAC contractor serving Oakland and the East Bay since 1985. Led by owner Don Marshall, they specialize in heat pump installations, ductless mini splits, furnace repair, and AC systems for both residential and light commercial properties. Known for honest diagnostics and quality workmanship, they're a trusted choice for homeowners looking to upgrade to energy-efficient heating and cooling in older Bay Area homes.
“We took advantage of the free design services for a heat pump heating system offered by QuitCarbon. After completing their home assessment questionnaire they gave us sizing, pricing and rebate information. QC referred us to Harry Clark Heating and Air Conditioning for a complete upgrade to replace our gas furnace. HC owner Don Marshall spent an hour and a half assessing the existing heating system in our 1908 home, answering all our questions and providing a detailed quote for a two zone system the next day. After reviewing the quote with QuitCarbon, we decided the price was competitive and chose not to get other bids. I should mention that I’m a licensed mechanical engineer and have lots of experience working with contractors. Armando Hernandez and his crew completed the install in one week and we were up and running on day 5. The quality of the workmanship was excellent. Armando addressed my many questions and was a pleasure to work with. There was an issue with a defective part in the air handler. The project manager Matt Schwoyer was able to resolve it with their supplier, and the part was replaced the following week. Everyone at Harry Clark was professional and responsive throughout the whole project. We are pleasantly surprised with the improved and consistent comfort level in our home and would recommend HC to anyone considering a heat pump retrofit.”
— jeff adams, Google Review · 4.7 ★ avg from 16 reviewsConnolly Heating and Air Conditioning is the top-ranked HVAC provider in the Berkeley area with a Lantern Score of 85.41/100 and 5-star rating from 264 reviews. They specialize in heating and cooling system installation, repair, and maintenance for homeowners in the Pacheco area and surrounding communities.
3rdGen Heating & Cooling (Lantern Score: 85.10/100) specializes in heat pump installations and full electrification retrofits, making them ideal for homeowners upgrading to efficient heat pump systems. Hassler Heating and Air Conditioning (Lantern Score: 83.91/100) also focuses on heat pump installations and home electrification projects with rebate savings.
3rdGen Building Systems (Lantern Score: 85.10/100) specializes in commercial HVAC with VRF systems, tenant improvement HVAC, and design-build mechanical services. Atlas Heating and Air Conditioning (Lantern Score: 83.94/100) also serves commercial clients with maintenance and installation for multiple buildings.
AIS Heating & Air Conditioning (Lantern Score: 83.99/100) offers emergency HVAC service and has served the region since 2008 with 4.9-star rating from 756 reviews. Next HVAC and Appliance Repair (Lantern Score: 82.09/100) also specializes in urgent HVAC repairs across the San Francisco Bay Area.
Perfect Star Heating, Cooling, & Electrical (Lantern Score: 84.10/100) is a locally owned family business with over 30 years of experience offering HVAC, plumbing, electrical, and solar services. Cabrillo Plumbing, Heating & Air (Lantern Score: 84.04/100) provides integrated HVAC, plumbing, and electrical solutions serving the entire Bay Area since 1961.
Hometown Heating and Air Conditioning (Lantern Score: 84.10/100) is family-owned and veteran-owned, serving Contra Costa, Alameda, and Solano Counties with 4.9-star rating from 2,553 reviews. They specialize in comprehensive heating and cooling repairs, replacements, and energy-efficiency upgrades.