(410) 252-6300 rob@chasonservice.com

Celebrating Over 75 Years of Service

At Chason Service Engineers, Inc., we’re proud of our years of service to the Timonium area

and look forward to helping you with your air conditioning and heating needs. We are pleased

to serve both residential and commercial customers.

Carrier Factory Authorized Dealer

Chason Service Engineers, Inc. is the oldest Carrier dealer in the area, a Carrier Factory

Authorized Dealer and a recipient of the President’s Award. Our dealer status gives our

customers confidence they are working with true industry experts.

24/7 Emergency Service Available

Residential and commercial customers know they can count on us to provide fast HVAC service,

properly designed systems and expert installations and replacements. We are available for any need,

24 hours a day, seven days a week. Call now!

Our Services

Providing Professional Heating & Cooling Solutions Since 1946

We specialize in the installation, repair, and servicing of a broad spectrum of equipment, including air conditioners, heat pumps, ductless mini-split systems, and heating units. With a focus on your comfort and peace of mind, we provide air conditioning services that include installation, sales, repairs, and seasonal check-ups, as well as heat pump solutions featuring installation, sales, repairs, and maintenance. For heating systems, we provide installation, sales, repairs, and seasonal maintenance, and we also offer contracts for ongoing care. Trust us to keep your indoor environment comfortable and well-maintained.

Heating & Cooling

Installation, sales & service, repairs, seasonal check-ups & more

New Installs

Air conditioning, heat pumps, gas/oil/electric furnaces, boilers

Maintenance & Repairs

Expert repair & maintenance of heating, cooling & air purifying equipment

Need a professional opinion?

Chason Service Engineers, Inc. would be happy to provide a FREE evaluation and estimate for any service.


Providing Professional HVAC Solutions Since 1946

Heating, Cooling & Indoor Air Quality

The technology involved in keeping the interiors of homes and commercial buildings at comfortable temperatures and humidity levels continues to evolve, and Chason Service Engineers, Inc. stays up-to-date on it. We have a long and strong track record of delivering quality air conditioning and heating systems to home and business owners throughout central Maryland – one that has allowed us to grow and become a recognized leader in the industry.

About Us

Chason Service Engineers, Inc. is proudly celebrating over 75 years in business.

On January 1, 1946, Earl and Marie Chason founded Chason Service Engineers, Inc., making an idea become reality. The rest is history. Here we are, four generations and over 75 years later, still family-owned and -operated by Robert and Janice Chason. Through the years, some things may have changed, but customer satisfaction has always remained paramount with us.

  • Residential HVAC services
  • Service agreements
  • FREE same-day estimates
  • Convenient financing options
  • Commercial HVAC services
  • 24/7 emergency repairs
  • A warranty on all services & installations

Our Customer Reviews

Here’s what our customers have to say about our company!

Fast and courteous service. Honest, knowledgable and dependable technicians went above and beyond to get my furnace repaired. I would highly recommend Chason Service Engineers.

– Tammy L

I want to thank Chason for their excellent service. We especially appreciated the technician’s attention to Covid19 protections during our recent AC checkup — social distancing, gloves, mask and quick, efficient service…

– Linda E

You’ll be very happy with their services and installations. They have been keeping their customers comfortable for 74 years!

– Robert C

These guys are top notch. Rescue friendly and helped with permitting, fixing of issues and obtaining final approval for our barn to take care of animals in need as a…

– Gina M

Chasons dispatched a repair technician in a timely manner this morning. Last night I spoke with Adam who was the On call technician to troubleshoot what was causing a fuse…

– Tina T

Good Afternoon Bob, Per our conversation today, I simply could not let the day end without saying two words, “Thank you.” As you know, one of your techs, John, stopped…

– William K


Financing Options Are Available

We understand that HVAC breakdowns rarely happen at a good time. We ensure you can get the equipment and services you need with convenient financing options. Contact Chason Service Engineers, Inc. today to find out more!

Are you looking for Heating and Cooling Services?

Contact Chason Service Engineers, Inc. Today!