HVAC reviews in Columbia, Maryland

Very honest and fairly priced. Recommended to me by the previous homeowner, and I’m very grateful for the recommendation. Willy took the time to explain the ins and outs of my HVAC system and answered all my questions, which was certainly above and beyond what I expected.

We just had our first service call with ESA- Vontae was perfect. Explained what was wrong with our furnace's gas valve, showed us how he proved it was getting the right voltage, and gave us good advice for following up with ESA's parts department so we can get a repair ASAP.

Will definitely be working with these folks again!

Doug came to do our yearly check up and spent time and attention to both our furnace and our outside unit. He was careful and thorough. We appreciate their extra care and are asking for a complimentary furnace evaluation since our unit was last installed in 2005 and has some age on it.

I scheduled an emergency call this morning and had a technician out within the hour. Sean was extremely knowledgeable, courteous, and respectful of my concerns. He diagnosed my problem after a thorough evaluation and minimal expense. I strongly recommend this company for your plumbing needs!

Unexpected issue with our 2 year old Trane system - naturally right before the biggest winter storm of the year! ESA sent their technician Tarrance out same day and he diagnosed the issue immediately. ESA was able to get the needed part within less than a day and Tarrance came back out and got our heat working before the temps dropped into the teens and lower!! Great job by Tarrance and the ESA team!

Absolutely horrible experience. I made an appointment from their website. Received a text confirmation and then an email confirmation of the appointment and was told the tech would be there between 8 am and 5 pm. Dutifully waited until 130 pm and then, having heard nothing, called the office. Reviewed address ect and was told tech would arrive by 3:30 pm. At 3:40 I called the office and was told he "might not get to me that day as he was on another job". When I complained, they said they would have the tech call me. He called me promptly and told me they do not service my zip code! Which someone could have told me at any point during this fiasco. Obviously their schedulers need some training.

Heat pump failure February 1, 2026. Same-day service recharged; however failed again shortly. Benjamin Griswold here on 2/3 to assess issue. Found catastrophic leak in outside unit. Repair scheduled for 2/9 and it was Benjamin Griswold who did the work. Professional and courteous. Answered all my questions. Highly recommend.

Called for a same day appointment with Corry which then I got Ben from the company to look at the problem. Had an ongoing issue with my Aprilaire 700 humidifier that made a clicking noise. He did a full on diagnostic and steps of verifiying all the issues. Very knowledgeable and expert in his field. Highly recommend this company and Ben. Also recommend their x2 a year service plan to take advantage of! Awesome experience with Corry and Ben! Amazed with the professional skills with customers!

The actual work was fine, but communication was poor. Scheduling was not easy, and then I had to repeatedly call them to finally get an estimate for the work. I asked for clarification on the estimate, and I was told I would get a call to discuss it. I was never called.

I was unable to remain on site the entire time while the work was being performed, but I asked the plumber to call me once he finished the work so I could go over what he had done. He never called. I went back over to the house, and he was just gone. The poor communication would prevent me from using them again.

We signed up for the biannual service plan and had our winter appointment today. The ESA technician did a very thorough job, answered all our questions and set our system up for the winter. We are very satisfied with the service.

We have used ESA for over 20 years and have never been disappointed. We have often had the same service technicians, all who have been excellent. Today was our first experience with Nick. Very, very professional and helpful - even when we were the last stop on his shift.

Outstanding service all around, especially for Benjamin G., a top-notch personable and knowledgeable professional. He performed the diagnostic, fully explained the issues, recommended replacement parts, and as luck would have it did the installation a few days later. Two thumbs up!

I was so impressed with the work Cody and his partner did. They showed up early, explained all questions and concerns I had, braved the extreme cold we had. Not one complaint. I have used ESA in the past and have always experienced excellent work. I will be using and referring you in the future. A++++++

Julieann was awesome! Thorough, kind, caring. Service of the highest quality. She pointed out other things I hadn't noticed that needed repair, including a leaking water heater that had already created a large hidden puddle that was heading for the carpet in the basement. I highly recommend ESA. You can't beat them.

I just want to give a shout out to Tarrence Morgan Sr. He is the service technician who was assigned to my residence to fix an HVAC issue. Tarrence was very professional and courteous. He informed me there was an initial installation issue with my unit that is only 9 months old. I believe Tarrence went above and beyond his call of duty to repair my unit in these current overnight freezing temperatures. Thanks much for your hard work and dedication to insure your customers are well taken care of.

As always, ESA came through, especially during this brutal blast of cold temperatures. Our heat went out sometime during the night, and within hours of my call, Chris was on site. Not only did he diagnose the problem, he also educated us on the workings of our system. We appreciate the personalized attention he gave to us, as though we were the only ones without heat. Kudos to ESA for their selection of the most superior technicians!

Douglas was great! He was thorough and even stopped to explain some things and gave us some good ideas and instructions. We subscribe to a yearly service that includes seasonal system checks and now plumbing system checks too. The seasonal system checks are included so we are not charged for the visits. They also send reminders to schedule the seasonal checks!

Today was a follow-on visit after my technician, Ben, detected an incorrect capacitor in his 6-monthly routine check. He replaced the capacitor and did a series of tests to make sure everything was reset properly and was working smoothly. Ben came on time and completed the repair quickly. I found him to be knowledgeable, punctual, and pleasant to interact with. Additionally, the company is excellent in sending me updates about my service appointments. I highly recommend this company and technician.

I had my first HVAC service today. My service person was extremely knowledgeable and thorough. He oiled, cleaned, tightened, and checked the furnace and humidifier components. This was not just a superficial glance at the equipment and a filter change (although the filters were changed). Everything was inspected and returned to its best performance. Any mess was cleaned up and he even wore paper booties to protect the floor. I recommend Environmental Systems if you want a job well done.

I have been a satisfied customer of ESA for many years and have NEVER had a less than stellar experience.As a Technician, Ibraham Abdulraham was an absolute wizard who correctly diagnosed the problem and ordered the parts from Carrier to completely fix the system. He was a puzzle master who completely tore apart the heat exchanger, installed the new parts and had us up and running in record time. I cannot speak highly enough about ESA and Ibrahim. They have my total trust and confidence to get the issue resolved quickly and at a fair price. I consider them both as “blue chip, first round” choices in any league.

This company has been our go-to for that past 11 years for all of our home's furnace and HVAC repairs/inspections. The staff are very polite and helpful when you call to report an issue or request an inspection. Their technicians are very knowledgeable, especially for older (>15 years old) systems. They have never tried to pressure us into buying an upgraded system; rather they have well maintained our current system. Their technicians have taken photos of all work pre and post, so we could see what the condition and issues were. In January 2026, we called to have a routine inspection completed; the technician arrived within 72 hours, evaluated the system, found some areas requiring cleaning/attention, and scheduled the follow-up service.