Customer Testimonials

Click Here to Read Our Reviews on Google.


Gas Furnace Installation in Ellicott City, MD 21042

“The team that installed our new furnace/AC did a great job. They were professional, wearing masks, and were efficient. At the end, the team leader explained every. I am very impressed with every aspect of the job.” – Robert F.

Air Conditioner Replacement in Ellicott City, MD 21042

“ESA installed our air conditioner and gas heat units 22 years ago. When our AC unit stopped working, ESA came right out, assessed the situation, and explained our options. In the few days that we were without working AC, ESA lent us a portable room air conditioner unit, which cooled our main living area nicely. Our new AC is wonderful!! The ESA technicians are fantastic and take care of every detail. Upon completion, the system was explained to me in detail. I highly recommend ESA for all heating and cooling needs.”

– Jane J.

Air Conditioner Repair in Elkridge, MD 21075

“JJ came out today when the system said it was malfunctioning and to call ESA. JJ was here within the hour from when I placed the call. He was professional, friendly, efficient, and very knowledgeable. He answered all of my questions and ensured that I had an adequate understanding of everything going on. JJ truly embodies the characteristics of a phenomenal provider of service in this industry.”

– Cheri T.

Air Conditioner Maintenance in Ellicott City, MD 21042

“I have been using Environmental Systems Associates for over 10 years and it has always been with excellent results. Recently, I added a Gas Furnace to my house and went through ESA to handle all the aspects. Top notch professions that really know the systems. I also have relied on them for yearly maintenance and repairs. Always on time, always knowledgeable and professional. I believe they always go above and beyond by providing advice, tips on getting the best out of your HVAC systems. They are the absolute best!”

– Mary Ann E.

Gas Furnace Installation in Columbia, MD 21044

“Love our new gas heater and air conditioning system. The installation crew was professional, efficient, and went beyond requirements to complete an excellent job. We are extremely pleased.”

– Barbara D.

Maintenance in Columbia, MD 21046

“Great work, very knowledgeable. I would prefer Ivan on all my service calls and also prefer first AM appointment.”

– Robert T.

Gas Furnace Maintenance in Ellicott City, MD 21042

“They came on time, provide maintenance for the gas furnace and air conditioner. They did a great job.”

– John L.

Gas Furnace Repair in Columbia, MD 21044

“I have been a customer of Environmental Systems since 1976. I would like to recognize Maureen(office contact) and Scott (our tech) for an outstanding job recently done for us – last week before the snow began we had no heat-Scott had someone troubleshoot our Carrier model and came to our home twice to make sure the proper repair was done before the storm. As a seasoned (older) realtor I have provided Environmental's name to many clients thru the years they provide outstanding service in a very professional manner.”

– Elaine K.

Air Conditioner Installation in Elkridge, MD 21075

“I can highly recommend ESA. Installation of a new AC and Furnace was scheduled within one week after placing the order. The space for the furnace was very, very tight but Ryan L. and his team fit in the new one just fine. (The original furnace was put in when the house was built before they put up the walls…). They showed up on time, cleaned up after they left, they handle the warranty registration, permit, inspection, rebate submission etc. Very Happy with their service.”

– Ferdinand M.

Gas Furnace Maintenance in Columbia, MD 21044

“Steve of Environmental Systems Associates provided our semi-annual AC/H checkup. He showed up exactly on time (and brought in my newspaper with him). He was extremely friendly and helpful, taking the time to fully explain a number of setting options on our automated thermostat relating to humidity settings in the heating mode vs the cooling mode. His inspection and maintenance of our systems left me confident that they are in good shape and will get us through the winter. He also gave me his card and offered to personally answer any additional questions that come up. I award Steve "5 Stars" for friendliness, helpfulness and thoroughness. He is recommended without reservation. Thanks again Steve and hope to see you next inspection.”

– Jeffrey O.

Derek B
Derek B
16:40 23 Sep 22
100% agree with the outrageous prices. Had a technician come out for a system check-up. We have two units. It costs $129 for each unit. This DOES NOT include filter replacement. We found that out after the fact. The technician replaced 2 filters and a humidifier panel ($20 on Amazon that they charged me nearly $50.)Total Bill? $458 just to tell me everything is working fine and to change 2 filters. NEVER AGAIN.Response to Owner reply:We were aware if the $129 per unit charge as was told to us when we scheduled the visit. We were NOT made aware that the filters were not included. If the filters we had weren't included in the scheduled service that should have been disclosed.Your prices are still incredibly expensive. It's a niche service and you are free to charge what you want, but I feel as a customer I should let other future customers know what they are getting into when they seek your services.
Diane Thomas
Diane Thomas
15:40 20 Sep 22
Salesman Richard was prompt in answering my questions and very clear in describing his product. I had a new gas line installed from the street to my house by BGE. ESA kept me informed as the project progressed. HVAC system was done according to stated schedule. Installer Ryan fully explained the install, and he and his crew were very efficient and left site in good order. I have no hesitation in recommending this company.
Michael McGovern
Michael McGovern
02:55 14 Sep 22
From start to finish everything was done well. We had a new AC install and the overall job looks great.
D Nace
D Nace
12:04 05 Aug 22
Matt Bischoff
Matt Bischoff
02:05 03 Aug 22
Tim Facius
Tim Facius
18:45 23 Jul 22
I can't say enough about how pleased I am with Environmental Systems Assoc. (ESA) I was in the market for replacement of two full heating and A/C systems, and requested quotes from several contractors including ESA. I was initially attracted to them by their many years of "Best in Howard County" rating as well as the ESA website. By far, ESA was the most responsive and prompt in reviewing my systems and providing a quick quotation. The quotation was the most professional and complete, with a high level of transparency on what was being quoted and a competitive price. They patiently answered all my questions, they were willing to work with me on specific requests I had, were able to schedule the work in a reasonable timeframe, and were able to install both systems on the same day with minimal disruption.The installation crew was also excellent. They knew what they were doing, were professional and polite, they laid tarps down wherever they needed to be, and left the house and premises in a clean state. They also did a great job of educating me on the operation of the new system and thermostat programming, providing all the equipment manuals and warranty information, etc.It is very clear that ESA has a strong customer focus, an excellent product portfolio, excellent support information, excellent service and installation capability.
Shirley Ann Acquah-Asare
Shirley Ann Acquah-Asare
15:55 22 Jul 22
Team replaced my HVAC system. Very professional, quick and neat installation. Had a little issue with my second unit and they gladly took a look at it and resolved. Thank you team.
Christopher Parks
Christopher Parks
02:46 21 Jul 22
Knowledgeable sales team and knowledgeable installation crew. Willing to answer all of my questions and explain things every step of the way. 100 percent satisfied with the installation and with the condition in which my property was left.
Kevin Shields Sr
Kevin Shields Sr
02:43 21 Jul 22
Mehul Bhadiyadra
Mehul Bhadiyadra
15:09 18 Jul 22
Ludwin B.
Ludwin B.
19:03 08 Jul 22
Dennis and Cody did an excellent job with removing the old system and installing the new system. Very professional.
Joan LeRoy
Joan LeRoy
09:49 14 Jun 22
We had the entire HVAC system, including a new hot water heater installed recently. It was a big job and the crew who got the job done in a timely, professional and clean manner. I was instructed on how to use the new system. Thank you.
Bill Hawkins
Bill Hawkins
04:13 14 Jun 22
This ESA team removed our old heating and a/c system and installed a new one. They came on a Saturday morning and were done in two hours, working as a well trained team. They were efficient, courteous, and informative and left the work areas spotless. Thanks for leaving us prepared for a hot summer. Highly recommend Environmental Systems Associates.
S
S
01:51 09 Jun 22
There is a good reason why ESA is in demand. Letting just anyone mess with your HVAC can be a disaster, an expensive one- and an expensive lesson I learned.These guys are good at their work, and not out to rip you off. It can feel daunting as the most of us are not HVAC experts. I felt like I was getting professional advice with sensible and relatively affordable options.Highly reccomend, they have a lifetime customer now.
Kapil Bhanot
Kapil Bhanot
12:59 08 Jun 22
Mr. Hendricks was amazing - he was able to quickly get back to us after our AC died and found a heat pump system for us in stock at a reduced price. The installation team (Dennis, Seth, Skyler, and John) was friendly, professional, and did a great job. We have a 2 month old and our AC broke - we were afraid we were going to have to wait a long time to find an AC in stock. Thank you so much.

Need HVAC Service?

Call the experts at Environmental Systems Associates.

Call us at 410-381-7991


Environmental Systems Associates proudly provides HVAC service to Howard County. Visit our service area page for more coverage details, call us at 410-381-7991, or request service online today.