Voted Best of Howard

For 21 Years

Welcome to

Environmental System Associates

Environmental System Associates

Environmental System Associates

Environmental Systems Associates (ESA) has brought superior solutions to residential comfort to Howard County, MD, and surrounding areas for over fifty years. Established in 1973, we’ve perfected our services to answer the challenge of maintaining a comfortable, safe, and healthy home at affordable prices. Our North American Technician Excellence (NATE) certified team provides new installation, system replacement, seasonal maintenance, and skilled repair of heating, cooling, and air quality equipment.

We work on all makes of furnaces, heat pumps, and air conditioners, optimizing performance to ensure reliability and longevity. Take advantage of a maintenance agreement from Environmental Systems Associates, and we’ll remind you when it’s time for essential upkeep, ensure a convenient appointment time, and handle your warranty requirements. For every job, count on our professionals to arrive within the stated timeframe and help safeguard your property against damage.

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What Our Clients Are Saying

“This is the first time that I had Douglas Williams come and do my fall maintenance. I was so impressed with his knowledge and friendliness. Had to leave a review because he was so thorough and always had a smile on his face.”
- Debbie K.

“Our 91-year-old father had a new unit installed at the end of last summer and this company was just great to work with. A part went bad on a Friday and while we were on vacation, our father called to say it was broken. We called and spoke to Lynette who got a repair crew out the same day and it was fixed before the sun went down. We were put at ease that he would be comfortable and safe in his home and Lynette was extremely friendly.

We found out he was charged quite a bit of money, so when we called again today to ask about it, she informed us it was a deposit that was being refunded as we speak. Lynette is amazing and we’re very happy with her customer service and with Environmental Systems’ fast and fair repair service as well. Thank you!”

- Derrick H.

“I had a great experience with ESA. Every one I spoke with on the phone was very helpful as well as the technicians who came out to do the job. I am very happy and plan on using this company again in the future.”

– Emelie B.

'- Emelie B.

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Check Out Our

Maintenance Plan

Proudly Serving Howard County, MD

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Top-Quality

AC and Heating Services

To earn recognition as a Carrier Factory Authorized Dealer, Environmental Systems Associates consistently meets strenuous requirements for customer approval, business practices, and technical proficiency. Our team participates in ongoing training, remaining ahead of industry developments, and is well versed in a wide range of industry-leading products to better match your needs to the ideal solution. We are extremely proud to have been singled out with Carrier’s highest honor for its dealers. The Carrier President’s Award represents outstanding leadership, integrity, and performance, and Environmental Systems Associates is a seven-time winner.

Carrier logo.
Carrier products.
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We Take Pride in Our Work

For all your heating and cooling repairs, service, and installations, call Environmental Systems Associates! Specializing in Carrier products, Environmental Systems Associates is uniquely qualified to recommend and install the most technologically advanced options in home heating, cooling, and air quality on the market. Enjoy unmatched energy efficiency, customized control over your environment, and the features that transform your home into the most welcoming place on earth. Our experts from Environmental Systems Associates answer more than your basic requirements. We exceed expectations with perfectly designed and implemented systems that actively work to maintain peak savings, greater comfort, and a healthy supply of conditioned air. Whether you are looking for installation, regularly scheduled service, or prompt repair across Columbia, MD, trust Environmental Systems Associates to deliver rewarding results.

Environmental Systems Associates service photo.

For all your heating and cooling repairs, service, and installations, call Environmental Systems Associates! Specializing in Carrier products, Environmental Systems Associates is uniquely qualified to recommend and install the most technologically advanced options in home heating, cooling, and air quality on the market. Enjoy unmatched energy efficiency, customized control over your environment, and the features that transform your home into the most welcoming place on earth. Our experts from Environmental Systems Associates answer more than your basic requirements. We exceed expectations with perfectly designed and implemented systems that actively work to maintain peak savings, greater comfort, and a healthy supply of conditioned air. Whether you are looking for installation, regularly scheduled service, or prompt repair across Columbia, MD, trust Environmental Systems Associates to deliver rewarding results.

Environmental Systems Associates service photo.

NATE logo. ACCA logo. Voted best of howard logo. Green logo. Carrier hall of fame dealer logo. 2021 presidents award logo.

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Call Us for Service 410-381-7991