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1974 - 2020
46 Years
of Service
1974 - 2020
46 Years
of Service
(925) 427-5522
Bay Area Heating, Plumbing & Air Conditioning Since 1974

heating & air conditioning in Concord, CA

Stewart Heating and Air Conditioning has been providing plumbing, heating and air conditioning in Concord, CA since 1974. We aren't just the Concord plumbing & HVAC contractor to call when you need your pipe, furnace or AC repair. We also provide home energy audits with a focus on whole home energy efficiency. That means that in addition to normal HVAC solutions, our customers can use us for home energy efficiency upgrades.

Our customers are very important to us. We believe business is done right by truly serving our customers with the best services & products. You can count on us as your local HVAC & plumbing contractor in Concord, CA for reliable and efficient HVAC and plumbing solutions ranging from scheduled maintenance to complicated repairs to a turnkey installation.

Air Conditioning

It's aggravating when your air conditioner won't work on the hottest day of the summer. Stewart Heating and Air Conditioning can provide air conditioning repair in Concord, CA quickly and efficiently. As a full service HVAC contractor since 1974, Stewart Heating and Air Conditioning serves residential and commercial customers in Concord, CA.

At Stewart Heating and Air Conditioning, we believe the dedication to customer service extends throughout the entire life cycle of your heating & cooling equipment. Our commitment to AC service is demonstrated through the ongoing investment we make in training, staff, tools, inventory, and vehicles.

Air conditioners contain a variety of intricate components and moving parts. When a unit breaks down, we send technicians who will quickly identify the problem and replace the worn parts. The most common air conditioning repair issues include burned out motors, low refrigerant, fused contractors, and compressor problems.

Call us today and learn more about the many benefits of installing a new, energy-efficient central air conditioning system. Ask us about our energy audit, that can help you save money!

HVAC Installation & Replacement

Stewart's is your trusted, local Concord heating and air conditioning contractor, and 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 Concord HVAC contractor you can trust, simply call (925) 427-5522. We will show you what true customer service is really like.

Heating Service in Concord, CA

If you want your Concord 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. Our services include furnace sales, installation and replacement. We also provide seasonal maintenance and repair work for any make and model of equipment.

Furnace Repair & Maintenance

When you need furnace repair in Concord, CA call the heating experts at Stewart Heating and Air Conditioning. Our technicians are knowledgeable and can quickly repair your heating system.

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.

If your indoor comfort system is not functioning correctly, our experienced technicians can help. We will quickly arrive and diagnose the problem so you experience as little down time as possible. Our extensive knowledge and 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.


If your home's toilets, pipes, showers, or other plumbing fixtures are in need of service, you need the most reliable residential plumber in Concord, CA, call Stewart Heating and Air Conditioning!

You can rely on Stewart's professional plumbers in Concord, CA with years of experience repairing pumps, pipes, drains, bathrooms & home kitchens. Our highly trained plumbing technicians pride themselves on their professional craftsmanship, punctuality and appearance.

Heating & Air conditioning Specials

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Customer Reviews

HVAC  Concord
NATE Certified Contractors
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BBB Accredited
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