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

50 Years in Business

Plumbing, Heating & Air Conditioning in Martinez, CA

Over the years, Stewart Heating, Plumbing & Air Conditioning has developed an outstanding reputation for our residential service with heating, air conditioning & plumbing in Martinez, CA. Our services also include home energy audits, blower door testing, thermographic inspection & blown insulation.

A large part of our business is from referrals. This enables us to focus on quality, and installing heating and cooling systems that work the first time, every time while meeting your unique design requirements. We want to be the company you tell your friends about.

Air Conditioning Service in Martinez

Stewart Heating, Plumbing & Air Conditioning is your trusted partner for comprehensive air conditioning services in Martinez. Our dedicated team is committed to providing the highest quality solutions to keep your indoor environment comfortable year-round. Whether it’s a comprehensive air conditioning installation or a minor repair job, no task is too big or small for us to handle.

Dependable Air Conditioning Repair

Experiencing trouble with your air conditioner? Look no further! Stewart Heating, Plumbing & Air Conditioning specializes in air conditioning repair in Martinez, CA. Our proficient technicians are well-equipped to diagnose and rectify any AC issues promptly. Whether it’s a minor hiccup or a significant breakdown, count on us to reinstate your comfort.

Benefit from our extensive experience and current training, ensuring we can tackle diverse makes and models of air conditioning units. Transparency is key—we’ll offer a comprehensive evaluation of the issue before commencing repairs, ensuring you’re fully informed every step of the way.

Professional AC Installation Services

When it’s time for a new air conditioning system, trust Stewart Heating, Plumbing & Air Conditioning for seamless installation. Our certified technicians will work closely with you to select the best AC unit that suits your needs and budget.

We understand that a proper installation is crucial for optimal performance and energy efficiency. That’s why we pay attention to every detail, ensuring your new system is installed correctly the first time. With our expertise, you can enjoy a cool and comfortable indoor environment for years to come.

Contact us for air conditioning installation in Martinez. With Stewart Heating, Plumbing & Air Conditioning, you’re in capable hands.

Heating Service in Martinez

Experience quality heating services in Martinez, CA with us. Our expert technicians are dedicated to keeping your home warm and comfortable throughout the colder months. From efficient installations to swift repairs, we’ve got you covered. Trust us to ensure your heating system operates at its best. Stay cozy with our reliable Martinez heating services.

Furnace Repair

At Stewart Heating, Plumbing & Air Conditioning, we hold NATE certification, ensuring proficiency in repairing any brand or model of furnace. With extensive experience in furnace repair in Martinez, CA, there’s no heating system we can’t handle. Our skilled technicians come equipped with well-stocked trucks, enabling them to swiftly diagnose and repair HVAC issues. We’re committed to client satisfaction and have earned a sterling reputation in Contra Costa County. Trust us for expert furnace repair services.

Furnace Installation

When it comes to furnace installation in Martinez, understanding heating systems can be complex. At Stewart Heating, Plumbing & Air Conditioning, we simplify the process. We specialize in installing Bryant central heating and cooling systems, as well as ductless units, controls, and thermostats. Additionally, we offer home energy audits to tailor a solution that suits both your comfort needs and budget.

As a Bryant Factory Authorized Dealer, we uphold the highest standards of excellence, ensuring 100% satisfaction guaranteed.  Our Factory Authorized Dealers undergo specialized training year-round to deliver solutions, installations, and services that meet your needs as a homeowner. They also hold North American Technician Excellence (NATE) Certification, the industry’s leading certification program for HVAC technicians.

For a reliable estimate on furnace installation in Martinez, CA, contact Stewart Heating, Plumbing & Air Conditioning. We’re committed to surpassing your expectations.

Home Energy Audit in Martinez, CA

A home energy audit, also known as a home energy assessment, is the first step to assess how much energy your home consumes and to evaluate what measures you can take to make your home more energy efficient. An assessment will show you problems that may, when corrected, save you significant amounts of money over time. Stewart Heating, Plumbing & Air Conditioning will let you know about the California Energy Rebates available to you.

Some of the things we test:

  • Blower Door Test
  • Infrared Inspection
  • Insulation
  • Indoor Air Quality
  • Carbon Monoxide Testing
  • Heating & Air Conditioning


If you’re ready have a more efficient home, call Stewart Heating, Plumbing & Air Conditioning to do a home energy assessment! We will use innovative technology to outline the areas of improvement your home requires to be more energy efficient. We back our recommendations with industry best services to implement them.

Plumbing Repair & Installation

If you need fast, reliable plumbing services Martinez, CA, call Stewart Heating, Plumbing & Air Conditioning . We can take care of any plumbing repair, installation or replacement service you may require. Whether in need of drain and sewer cleaning, sewer repair or water leak detection, we can do it all, and we do it right the first time!

Some of the home plumbing and drain cleaning services we offer:

  • Sinks, Drains, and Faucets
  • Drain Pipes
  • Bathtubs and Showers
  • Toilets
  • Septic Tanks and Sewer Lines
  • Pipe Repair
  • Water Heaters
  • Preventative Maintenance Inspection
  • Trenchless Pipe Repair
  • Garbage Disposal
  • Tree Root Removal
  • Backflow Prevention
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