Come along for a view of our expert care team in action. Service Experts - we deliver expert HVAC, and plumbing services nationwide. This video showcases the dedication of our team to provide professional service and local care for your home system needs.
Environmental Systems Associates
Serving Howard County since 1973
Expert home services—locally managed with national brand support. Quick repairs, full upgrades, or anything in between.
With any new HVAC, Indoor Air Quality, Water Heater or Water treatment Service Experts Advantage Program lease agreement, we will make your payments for the first 6 months.
Valid on new Advantage Program lease agreements from 1/7/26 through 2/28/26. Customer owes $0 for the first six months; regular monthly lease payments begin thereafter. Early termination during promotional period will result in charges for elapsed months. See your full Advantage Program Lease Agreement for complete terms and conditions, including total lease cost and payment schedule.
Jan 7, 2026
- Feb 28, 2026
10% Off Any Product or Service for Active Duty, Retired, and Veteran Military Personnel
It’s our way of thanking you for your courage, dedication, and sacrifice to protect our freedom. All work is performed by licensed experts and backed by our Service Experts Guarantee.
Offer not valid on prior purchases and may not be combined with other offers.
Your home deserves reliable solutions for every essential system that keeps your property comfortable and functional. After all, Environmental Systems Associates has been supporting and serving Howard County residents since 1973. We proudly offer professional HVAC, and plumbing services in Columbia. Whether you need routine maintenance, an urgent AC repair, or a plumbing system upgrade, our experienced team is here to ensure your home remains safe and functional.
With expertise covering heating, cooling, and plumbing services, we’re equipped to address various needs. From optimizing performance to solving unexpected problems, we deliver precise and dependable care tailored to your home.
At Environmental Systems Associates, we aim to provide high-quality service on every call. Our ACE-certified technicians combine advanced training with local expertise to offer solutions that are efficient and effective. We stay current with the latest industry standards to guarantee the best results for every project.
Supported by a leading national network, we provide access to reliable equipment, advanced tools, and competitive pricing. Our Service Experts Guarantee ensures that all services are performed by licensed, bonded, and insured professionals who meet strict quality standards.
Whenever your HVAC or plumbing systems need attention, you can rely on Environmental Systems Associates for trusted expertise.
Affordable Membership Plans for Straightforward Maintenance
Avoid the hassle and cost of unexpected breakdowns with our convenient membership plans. Designed to make home care easier, our plans offer consistent upkeep while protecting your budget.
Service Experts Advantage Program™: Upgrade to brand-new equipment without any upfront costs, with full coverage for parts and labor, annual tune-ups, and priority service.
Maintenance+ Membership: Preserve your equipment's performance with regular maintenance, priority scheduling, discounted repairs, and extended equipment life.
These flexible plans help you stay ahead of potential problems, ensuring reduced repair surprises and lasting peace of mind for your home.
Decades of Commitment to the Columbia Community
Serving Howard County since 1973, Environmental Systems Associates has delivered top-tier home services to the Columbia area. Whether addressing summer heat with dependable air conditioning repair or bracing for winter with effective heating solutions, we’re here to keep your home ready for every season.
Learn why so many Columbia homeowners count on Environmental Systems Associates for their HVAC and electrical needs. We’re always ready to provide fast turnaround times and support for your home, from emergency service to preventative care.
Our Experts Make You Feel Right at Home
Creating comfortable, efficient homes with expert service and innovative solutions.
The Service Experts Guarantee
We promise that every piece of equipment we work on and install will be set up with care and precision—exactly as the manufacturer intended.
Fast Response, Anytime You Need Us
From heating to plumbing, we respond quickly to keep small issues from becoming big problems.
Licensed, Bonded & ACE-Certified Experts
Our nationally certified, ACE-certified professionals are licensed, bonded, and insured, delivering top-tier expert service with complete peace of mind.
Schedule Anytime, Day or Night
Book your appointment whenever it's convenient for you. Our scheduling and customer support are available 24 hours a day, 7 days a week.
Environmental Systems Associates is proud to be part of the Service Experts family, blending years of local knowledge with the strength of a nationally recognized brand that has been serving communities across the country since 1996. This partnership allows us to maintain the personal touch and trusted service that local customers expect, while also leveraging the training, expertise, and resources of a large national network. It’s the ideal combination of hometown familiarity and the dependability of a broad-reaching organization, ensuring customers receive tailored solutions backed by industry-leading support.
Our over five-decade-long commitment to serving Florentine Villas, Almo Park, and beyond remains stronger than ever, with an ongoing focus on elevating the services and capabilities we offer. Customers in the area can continue to rely on the same dedication to quality and excellence they’ve come to know and trust, amplified by access to greater resources and expertise. Experience the unmatched balance of personalized local care and the reliability of a national powerhouse with Environmental Systems Associates today!
"I was so impressed with the work Cody and his partner did."
J
"Within hours of my call, Chris was on site and educated us on the workings of our system."
B
"I have been a satisfied customer of ESA for many years and have NEVER had a less than stellar experience."
G
"Chris was excellent and explained all issues in detail."
f
"Dawn was very helpful in scheduling a quick service call even during the height of a wintry storm."
G
"He was quick and professional, and explained to us how we could potentially fix similar issues in the future on our own."
H
"ESA was able to come out the day after the snowstorm and took care of the issue with the furnace."
D
"ESA sent their technician Tarrance out same day and he diagnosed the issue immediately."
E
"The services provided by Tarrence Morgan were exceptional this evening."
D
"I’ve been a contract customer for 10 years and ESA has been awesome to work with."
S
"Our technician Robert was very knowledgeable and friendly."
S
"They have my most enthusiastic endorsement."
H
"Quick working through diagnosis."
P
"Technician Ibrahim was very knowledgeable and friendly."
L
"They are on time, professional, and very knowledgeable."
R
"Robert was courteous, thorough and informative."
R
"On time, very polite and professional, very knowledgeable, terrific service."
C
"He was thorough and even stopped to explain some things and gave us some good ideas and instructions."
J
"Listened to my concerns and was quite helpful."
M
"My technician Vontae was very polite and professional."
V
"Our go-to for 30 years plus."
M
"The technician was professional and efficient."
N
"Willy took the time to explain the ins and outs of my HVAC system and answered all my questions."
M
"Sean was extremely knowledgeable, courteous, and respectful of my concerns."
R
"The ESA technician did a very thorough job, answered all our questions and set our system up for the winter."
E
"This was not just a superficial glance at the equipment and a filter change. Everything was inspected and returned to its best performance."
g
"He was quick, knowledgeable, and thorough."
A
"Chris was very polite and personal and courteous."
D
"Julieann is a fantastic technician! Highly recommend ESA."
A
"Explained what was wrong with our furnace's gas valve and showed us how he proved it was getting the right voltage."
I was so impressed with the work
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++++++
ESA Came Through During Brutal Cold
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!
They Have My Total Trust and Confidence
I have been a satisfied customer of ESA for many years and have NEVER had a less than stellar experience. As a technician, Ibrahim 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.
Chris was excellent
Chris was excellent. Explained all issues in detail and put up with my many questions!
Very helpful in a winter storm
Dawn was very helpful in scheduling a quick service call even during the height of a wintry storm. Tarrence the technician was very knowledgeable and explained the findings well.
Our technician, Ibrahim, was great.
Our technician, Ibrahim, was great. He was careful to not track dirt and snow into the house during his visit, was quick and professional, and explained to us how we could potentially fix similar issues in the future on our own. The issue was quickly resolved, and he shared a couple of funny experiences with us. The only thing preventing me from giving a 5-star review is due to a little chaos in scheduling and confirming the appointment with the after-hours answering service. I would continue using them.
Very Satisfied
ESA was able to come out the day after the snowstorm and took care of the issue with the furnace. Very satisfied.
Great job by Tarrance and ESA
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 the 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!
Services Provided by Tarrence Morgan
The services provided by Tarrence Morgan were exceptional this evening repairing our heating system.
Highly recommend them
My furnace was down and I called Environmental Systems to come out. Cory was awesome in arranging service the same day. Ibrahim came out and was professional and knowledgeable! He diagnosed the issue as a failed control board. Not great news, but the part was covered under Carrier warranty, so all I paid for was labor. He was back 2 days later with the part, and we were up and running. I’ve been a contract customer for 10 years and ESA has been awesome to work with. Highly recommend them!!
Our technician Robert was very knowledgeable
Our technician Robert was very knowledgeable and friendly. And of course, as usual, there was great communication as far as timing and arrival!
ESA Is the Gold Standard HVAC Company
ESA is the gold standard HVAC company. Have used them several times in the past and sent them to my son and daughter-in-law's house as well. They have my most enthusiastic endorsement. Techs are on time, very knowledgeable, and extremely professional. Ibrahim Abdulrahman did a fantastic job.
Quick turnaround
Quick working through diagnosis. Once parts came in, quick turnaround.
Technician Ibrahim was very knowledgeable
Technician Ibrahim was very knowledgeable and friendly. Identified the problem as well as gave us advice on some options. Also, folks in the office were very friendly setting up the appointment.
Always Very Happy With ESA
I have been using ESA for years and have always been very happy with them. They are on time, professional, and very knowledgeable. I highly recommend.
Courteous, thorough and informative
Robert was courteous, thorough and informative. At the end, he explained that my bill included a year's worth of community pads (two, replaced each fall) when I asked about the price on the bill.
Terrific service
On time, very polite and professional, very knowledgeable, terrific service. I have been a customer long term and always satisfied.
Douglas Was Great!
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!
Exceptional and professional HVAC provider
Julieann is an exceptional and professional HVAC provider. Listened to my concerns and was quite helpful.
Awesome service
Awesome service, my technician Vontae was very polite and professional.
Best in the business
Best in the business. Our go-to for 30 years plus.
ESA Always Gives Us Peace of Mind
The technician was professional and efficient. He found an issue that could have become a bigger problem later and took care of it. ESA always gives us peace of mind. Thanks!
Very honest and fairly priced
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.
I strongly recommend this company
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!
Very satisfied with the service
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.
Extremely knowledgeable and thorough
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.
Did a great job
Nicolas Gerez did a great job getting my humidifier operating. He was quick, knowledgeable, and thorough. Thanks!
Chris Was Wonderful
Chris was wonderful. He knew his job and fixed the problem in no time. Chris was very polite and personal and courteous. He was a big help. Thank you for sending him to us.
Julieann Is a Fantastic Technician
Julieann is a fantastic technician! Great service as always. Highly recommend ESA.
Vontae Was Perfect
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!
