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Since 1969, ACS Air Conditioning Systems has been providing the East Bay Area, including Pleasant Hill, Lafayette, and Concord, with unrivaled home comfort solutions. We’ve made it our mission to be the best, most knowledgeable, and friendliest HVAC and Solar technicians around. After over 40 years as a family owned business and Carrier® authorized dealer, our attention to detail and product knowledge have won over clients time and again and helped us solidify that reputation. Offering everything from HVAC installation, HVAC repair, and HVAC maintenance to Indoor Air Quality and Solar Energy. We cater to all types of homes and budgets. Whether your HVAC system needs an expert to nurse it back to health, or you are looking to improve the comfort and energy efficiency of your home – we have the answer. Call us now to find out what offers and promotions we have available!

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You may be surprised to know that the air in your home is not nearly as clean as you might think it is. Between system leaks, poor filtration, and even the pollution that can be emitted from older systems – you have a lot of low-quality air to contend with. Perhaps you have allergies, or maybe you are concerned by the level of dust you see gathering around your house. With a well-managed indoor air quality control system, you can banish allergens, dust, and other offending pollutants while making your house cleaner, healthier, and more comfortable. As an authorized Carrier® dealer, we offer a wide range of products, from filtration units to humidity control systems, to help ensure that the air in your home is as clean and comfortable as possible. For more information on the indoor air quality (IAQ) solutions we offer to our clients in the East Bay Area, click here or call us at (925) 676-2103.


Did you know that the average American household puts about 3,300 hours of wear and tear on their home HVAC system each year? That is a lot of mechanical stress. The best way to avoid a breakdown while keeping your system running efficiently for the long term is to perform regular maintenance. Just like with your car, performing regular tune-ups can keep your HVAC system running at its peak while reducing energy costs. At ACS, we offer a range of maintenance programs – from one-time check-ups to regularly scheduled maintenance – to help you get the most out of your HVAC system while staving off big, expensive repairs. Best of all, with regular maintenance, you can not only extend the life of your system but also improve its efficiency and reduce your energy bills! Call us at (925) 676-2103 today to find out more about our maintenance service options.



With tax incentives and rebates available, there is no better time than now to upgrade your home to cleaner, more efficient energy. With a small solar array, you can let the sun help power your home while reducing traditional energy consumption. That means you can save green while you go green. Solar panels can be installed on your rooftop and are guaranteed to provide you with clean, renewable energy for at least the next 25 years. And not only will you be helping to better preserve the environment, you’ll be reducing your own energy bills in the process! Call us at (925) 676-2103 today to find out more about our solar energy options.

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Whether you are replacing a failed old unit or you are just looking to upgrade to a more efficient system, ACS can help you get the most bang for your buck while improving your home comfort. We know that a lot of long-term problems stem from improper installations, that’s why our fully trained technicians take the time to provide one-of-a-kind service and assure that the job is done right the first time.

When replacing an old HVAC system, many lesser companies will simply drop in a new unit that they feel approximates your old system sufficiently. Not so for us. Our technicians perform thorough inspections to determine your home’s specific needs while also determining compatibility requirements. We then sit down with you to review options and recommendations so that you can choose an HVAC system that meets your needs and your budget. On top of that, we also offer financing solutions to help you get the system you need now.


Since 1969, we have been a proud dealer of Carrier® brand HVAC equipment. Carrier® products have set the standard in the HVAC industry with everything from heaters and furnaces to air conditioning and air quality control systems. Having extensive experience with Carrier® products, we can offer expert advice when it comes time to choose your own home comfort system. Not only that, but as a factory authorized dealer, we can also get you the best available factory rebates and incentives. So you get the best products and unbeatable prices! Click below to shop available products or call us to find out more about current incentives and our installation services.

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Recent Blog Posts

  • Why Is My Air Conditioner Making Strange Noises?

    September 25, 2019

    Air conditioning manufacturers are going to great lengths to build ACS air conditioning systems that are quieter than ever, so odd noises coming from your heating and cooling system could mean trouble....

  • Managing the Humidity Levels in Your Home

    July 17, 2019

    High levels of humidity can make already hot summer days feel 10 degrees warmer. This prompts homeowners to set their thermostats even lower, increasing the stress on their air conditioning...

  • Facts About AC Costs in the U.S. (and Tips on Reducing Them)

    June 17, 2019

    In the United States, 12% of the energy expenditures of most households go to air conditioning. In hot, humid climates, the number goes up to 27%. Even in a cold country,...

  • How HVAC Units Become Moldy, and How It Can Be Stopped

    May 15, 2019

    Mold is a notorious health hazard. It's linked to various respiratory illnesses and can trigger allergic attacks. Although this harmful microorganism threatens only individuals sensitive to this particular allergen, mold is also...

  • What Causes Spring Allergies?

    April 10, 2019

    For many people, spring is allergy season, which means they’ll soon have to start dealing with unpleasant allergy symptoms: runny nose, irritated eyes, sneezing and congestion. ACS, one of the...

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