Heating, Plumbing & Air Conditioning in Contra Costa County Since 1974

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Heating & Air Conditioning in Danville, CA

Stewart’s is your leading heating & air conditioning contractor in Danville, CA, providing homeowners with reliable indoor comfort control since 1974. We are a NATE certified contractor which means you can trust our expertise. Additionally, we believe business is done right by truly serving our customers, and we prove this every day on each customer job. You will be hard pressed to find another company in the area who maintains the high customer satisfaction ratings that we do. You can count on us as your local Danville HVAC contractor for cutting edge, reliable and highly efficient HVAC solutions ranging from scheduled maintenance to complicated repairs to a turnkey system installation.

Ask us about a home energy audit. Energy efficiency improvements can help you save energy and money. A home energy audit will help you identify potential energy savings.

Air Conditioning

Unless your home sits right on the water, an efficient air conditioning system is an important part of staying cool in the summer. Stewart’s air conditioning services in Danville include maintenance, AC repair and new system installation using the latest products.

Air Conditioning Installation in Danville

When it comes to air conditioning installation in Danville, Stewart Heating, Plumbing & Air Conditioning is your trusted partner. We understand the significance of a reliable and efficient cooling system, especially during the scorching summer months. Our team of skilled technicians specializes in professional air conditioning installations, ensuring that your home remains cool and comfortable throughout the season.

With our extensive experience and knowledge of the latest products and technologies, we can guide you through the entire installation process. Whether you’re looking to upgrade your existing system or install a brand-new one, we have the expertise to recommend the best air conditioning solution tailored to your specific needs and budget. Our goal is to maximize the performance and energy efficiency of your system, providing you with optimal comfort while keeping your energy costs in check.

AC Repair

In addition to installation, Stewart Heating, Plumbing & Air Conditioning also offers reliable air conditioning repair services in Danville. We understand that even the most well-maintained systems can encounter issues from time to time. That’s why our team is equipped with the skills and knowledge to diagnose and repair a wide range of air conditioning problems efficiently and effectively.

Whether your AC is not cooling as it should, making strange noises, or experiencing any other performance issues, you can count on our technicians to identify the root cause and provide the necessary repairs. We use the latest diagnostic tools and techniques to ensure accurate assessments and swift solutions, minimizing downtime and restoring your system to optimal functionality.


If you want your Danville home to stay warm and toasty without breaking the bank, you’ve come to the right place. We offer gas furnaces with extremely high Annual Fuel Utilization Ratings (AFUE), and variable speed fan motors for quiet, efficient comfort. For even greater efficiency, a hybrid heating system uses a high efficiency gas furnace and electric heat pump to provide optimal energy usage throughout the heating season. We not only offer new furnaces and heat pumps, but we provide seasonal maintenance and emergency repair work for any make and model of equipment.

Furnace Repair

If you need furnace repair, our experienced technicians will quickly analyze and diagnose the problem. Our in-depth and extensive experience in the HVAC field means we know how to quickly find the real problem with your system. This saves you the extra time and expense associated with lack of experience and poor troubleshooting. Once the problem is determined, we will give you our recommendations on the best action to take for your specific situation.

Furnace Maintenance

Similar to vehicle maintenance, maintaining your HVAC system is very important if you want it to run efficiently, and last as long as it was manufactured to last. A neglected heating and air conditioning system might work for you each season, but it will begin to lose efficiency, and can have premature problems, costing extra money to repair. Stewart’s seasonal maintenance plans are low cost ways to ensure your HVAC system is running at peak performance. We will clean and inspect your equipment for smooth operation.

HVAC Installation in Danville, CA

As your local Danville Heating and Air Conditioning Contractor, we offer industry best installation services for reliable and efficient comfort control. We are a NATE certified contractor, which is a certification only earned by best of breed contractors with proven expertise in the field. Many things go into the proper installation of a new system. Without the proper design and installation, a system cannot run as efficiently as designed, and can even cost hundreds of extra dollars to run each year.

For a Danville HVAC contractor you can trust, simply call (925) 203-9141. We will show you what true customer service is really like.


We offer a variety of residential plumbing services in Danville, CA including leaky drains or broken faucets, bathrooms to kitchens to laundry sinks. We install and repair garbage disposals, complete home re-piping, water heaters, sewer, sump pump & water heaters.

Roger S. - Danville, CA
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Very professional and complete. I would recommend Stewart to anyone. Highest quality of workmanship and clean installation. Roger Severe - Danville, CA.


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