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

Plumbing, Heating & Air Conditioning in Lafayette, CA

Stewarts is your leading Heating & Air Conditioning Contractor, serving Lafayette, CA homeowners and businesses since 1974. 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 Lafayette HVAC contractor for cutting edge, reliable and highly efficient HVAC solutions ranging from scheduled maintenance to complicated air conditioning & furnace repairs to a turnkey system installation.

Air Conditioning in Lafayette, CA

If you don’t have a home right on the beach, an efficient air conditioning system is important for staying comfortable during our summer days. Stewart’s air conditioning services in Lafayette includes maintenance, repair and new system installation using the latest products with high Seasonal Energy Efficiency Ratings (SEER), two-stage motors and R-410A (Puron™) refrigerant.

Heating Services

Modern technology has come a long way, offering homeowners in Lafayette, CA many options for efficient comfort in cooler weather. Now you can obtain a gas furnace is a state of the art system with extremely high Annual Fuel Utilization Ratings (AFUE), and variable speed fan motor for quiet, efficient comfort for your home. 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 & 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.

If your heating and cooling system is having problems, 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.

Home Energy Assessment

Home energy audits, or home energy assessments, can provide significant insight on your home’s total energy efficiency based on proven building science. Using effective techniques, a home energy audit can help determine energy consumption, identify areas for improvement, and provide solutions that will save you money each month on your utility bill.

HVAC Installation

As your local Lafayette HVAC Contractor, we offer industry best installation services for reliable and efficient comfort control. We are a N.A.T.E. 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 Lafayette HVAC contractor you can trust, simply call (925) 427-5522. We will show you what true customer service is really like.


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