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

50 Years in Business

Plumbing, Heating & Air Conditioning in Oakley, CA

Stewart Heating and Air Conditioning specializes in providing plumbing, heating & air conditioning services in Oakley, CA that provide homeowners with a solution which is both energy-efficient and comfortable. Contact us today for more information about our air conditioning & heating installation, repair and maintenance services in Oakley. When you need HVAC or plumbing service for your home or business, call Stewart Heating and Air Conditioning! There’s nothing we can’t do when it comes to plumbing, heating, and cooling. Our work is guaranteed to save you time & money.

Air Conditioning Service

Stewart Heating, Plumbing & Air Conditioning offers comprehensive air conditioning services in Oakley, CA, catering to both commercial and residential clients. Our skilled technicians provide expert air conditioning repair and maintenance for all brands, ensuring your system operates at peak efficiency. Additionally, we specialize in the installation of Bryant air conditioners, delivering top-notch cooling solutions tailored to your needs. As a trusted air conditioning contractor, we are dedicated to keeping your home or business cool and comfortable year-round with reliable and professional service.

AC Repair in Oakley

Our technicians are skilled at repairing all makes and models of residential air conditioners. Every technician on staff has the experience performing diagnostics and repairs on residential air conditioners in Oakley. We perform comprehensive inspections of your system to determine exactly what’s wrong. With easy access to necessary parts by brand name makers, all of our AC repair in Oakley are designed to last.

Air Conditioning Installation in Oakley

If you need an air conditioning installation in Oakley, our skilled technicians will thoroughly assess your options. We’ll accurately determine the ideal system size to effectively cover your cooling requirements. When a system is improperly sized—be it too large or too small—it can lead to sub-optimal performance, resulting in either premature wear due to excessive cycling or inadequate cooling. Our technicians have extensive experience with various cooling systems and are proficient in installing units and ductwork for any residence. Contact us now for a complimentary estimate on AC replacement in Oakley, CA.

Heating Services

For an exceptional heating service in Oakley, CA, look no further than Stewart Heating and Air Conditioning We’ve been working with residents of Oakley for since 1974, provide the right heating solutions. We are customer driven and have your best interests in mind. You want to be sure you’re getting competitive pricing. We have the experience that comes with the performance of hundreds of furnace installations and repairs. We can fix any brand.

Furnace Installation

A heating system is an investment in your property. It keeps you comfortable on chilly mornings and cold nights. It requires proper installation from a certified technician. We’ve made a name for ourselves by going above and beyond. For a heating contractor in Oakley that truly has your best interest in mind, you want Stewart Heating and Air Conditioning .

Furnace Repair & Maintenance

Stewart Heating and Air Conditioning provides furnace repair and maintenance in Oakley to all brands of heating equipment. Furnace breakdowns can often be avoided with proper and regular maintenance by an HVAC professional. Before you turn on your heater this season, schedule your annual maintenance to make sure your heater or heat pump is ready for winter. Keep your heating system lasting longer and running more efficiently by scheduling service!

Home Energy Audit in Oakley, CA

Stewart Heating & Air Conditioning’s energy audit is to help homeowners maximize energy efficiency and decrease utility costs. We specialize in conducting home energy audits to determine where a structure is losing energy by using blower door testing and thermographic inspections. Schedule your home energy audit.

Plumbing Service in Oakley, CA

Need a plumber in Oakley? With our plumbers on the job, you can expect the highest standard of service. When you need plumbing in Oakley, CA be sure to contact, Stewart’s for the best plumbers. From the smallest leak to the largest remodel, we offer the finest plumbing services available. Our trained plumbers will work efficiently to provide quick and top quality service & installation.

David G.
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Heat pump stopped working. Angelo trouble shot the problem. Replaced fuse but still not working. Then tracked the short to a broken wire in the thermostat. Arrived on time. Methodically solved the problem. Pleasant demeanor. Stewart Heating seems to hire smart and reliable people. Always 5 star service.


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