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Carrier Factory Authorized Dealer

San Gabriel Valley's Best Value in Heating, Air Conditioning & Plumbing

Serving Glendora, Covina, San Dimas, Azusa, La Verne & the Surrounding Area Since 1985

Locally Owned & Operated, Full-Service HVAC & Plumbing Company

Highly Experienced Family Owned Honest Recommendations Quality Workmanship

San Gabriel Valley's Experts in Heating, Air Conditioning & Plumbing

At R.D. Smith Heating & Air Conditioning, we offer the best value in heating, air conditioning and plumbing in the San Gabriel Valley. We specialize in diagnosing, repairing, selling and installing furnaces, air conditioners, ductwork, heat pumps, and mini-splits as well as repiping, installing and fixing toilets and faucets, drain cleaning, gas line service, water heater installation/replacement and repair, and more. We're trusted by general contractors throughout Glendora, Covina, San Dimas, Azusa, La Verne, and surrounding cities to install new HVAC and plumbing systems from the ground up. As a full-service, highly experienced heating, air conditioning, and plumbing company, we understand how to best meet the indoor comfort needs of homeowners and commercial businesses throughout the San Gabriel Valley. We prioritize honest and fair business practices, fast and reliable service, and cost-effective solutions.

Carrier Air Conditioning & Heating Systems

The Ideal Indoor Climate Solution for San Gabriel Valley Residents & Businesses

As a Carrier Factory Authorized Dealer, we exclusively sell and install Carrier heaters, air conditioners, heat pumps, ductless systems, air purifiers, and related products. Over the last 100 years, Carrier furnaces and air conditioners have consistently proven to be powerful, energy efficient, durable, quiet, and highly reliable, making them an ideal choice for many San Gabriel Valley homes and businesses. When installed by a Carrier Factory Authorized Dealer, their systems are backed by a 100% customer satisfaction guarantee for 12 months and a 10-year manufacturer warranty on parts.

R.D. Smith Heating & Air Conditioning's
Customer Reviews


RAY, is the best! He's honest and does great work. He worked on our AC unit. And we recommended him to our friends. And they love him and his work.Truly a master professional in his profession.

Gloria Fitzsimmons Via Facebook Reviews

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They are the only one that come out on the same day we call. Arrived on time and the work is professional.

David W., Temple City, CA Via Yelp Testimonials

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Truly a professional. would recommend RD Smith any day, excellent service.

Anthony Rodriguez Via Facebook Reviews

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Send Us a Message

For fastest response, please call (626) 334-7847

We Offer Heating & Air Conditioning Repair & Service All Major HVAC Brands

We are fully qualified to handle any heating and air conditioning repair or maintenance request. Our technicians are highly trained, NATE-certified HVAC service experts who stay up to date on the industry's latest technology so that they can consistently deliver exceptional results. With our state-of-the-art diagnostic tools and large inventory of parts, they are equipped to complete most repair jobs on the first visit. We can also set up a one-time tune-up or regularly scheduled maintenance visits to help keep your equipment running at its best.

Book an Appointment Today for High Quality, Affordable Heating, Air Conditioning & Plumbing Service In & Near Glendora, Covina, San Dimas, Azusa, and La Verne, CA

Call us today to schedule any of our heating or air conditioning services in the San Gabriel Valley area. The indoor comfort of our customers is our highest priority, which is why we do our best to accommodate your schedule. Our customers can expect us to provide cost-effective, personalized solutions, and we always stand behind our products and workmanship with a guarantee to do the job right the first time. No matter your heating, air conditioning, and plumbing needs, you can always count on R.D. Smith Heating & Air Conditioning to treat you right.

  • Azusa, CA
  • Bradbury, CA
  • Claremont, CA
  • Covina, CA
  • Duarte, CA
  • Glendora, CA
  • La Verne, CA
  • Monrovia, CA
  • Pasadena, CA
  • Rancho Cucamonga, CA
  • San Dimas, CA
  • Upland, CA
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