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.
Earn up to $1,250 in promotional reward cards when you lease or purchase a new qualifying system
Earn a $1,000 promotional reward card for a qualifying purchase or $1,250 in promotional reward cards for a new lease with same-day enrollment in automatic payments, subject to eligibility requirements and other terms and conditions.* Promotional reward cards are issued by Perfect Gift, an independent third-party provider, and are subject to the card issuer’s terms and conditions.
Offer valid 3/16/26–5/16/26 on qualifying, new invoices only. Residential customers only. Promotional reward cards are not gift cards, are not redeemable for cash, and have no cash value except as required by law. Eligibility requirements apply, including that you must spend at least $10,000 on a single invoice date for new equipment services or installations. For purchases, your payment for that transaction must be processed and cleared within 14 days of the invoice date. For equipment leases, the total installed cost listed on your Service Experts Advantage Program Lease Agreement must be at least $10,000. See full details in Terms and Conditions.
Valid for new and active Maintenance+ members. $0 diagnostic fee applies only when recommended repair is completed and paid at the time of service. Not valid at Service Experts Memphis, Service Experts Tulsa, Strogen’s Service Experts, Fras-Air Service Experts, Pine State Services, RB Travis Plumbing, Stan Gelber & Sons, Inc Heating & Cooling, or United Plumbing locations.
Promotion valid for service visits occurring 3/16/26 – 6/30/26. Cannot be combined with other offers. No cash value. Offer may be modified, suspended, or withdrawn at any time as permitted by law.
Mar 16, 2026
- Jun 30, 2026
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!
"The tech JulieAnn, like all the others, answered all my questions patiently and worked efficiently."
L
"They've consistently gone above and beyond for me, communicating clearly and delivering quality work I can count on."
c
"Annual A/C scheduled maintenance done by technician Nicolas Gerez was excellent!"
R
"Very reliable, professional, and knowledgeable techs."
M
"Professional and reliable. Always willing to go the extra mile to share information about my unit."
B
"Technician Nicolas Gerez was fantastic again on 4/21/2026!"
L
"He’s professional, courteous, and just all around a kind person."
S
"He is always thorough and honest about what our system needs to function properly."
D
"Vontae Josey was the technician and he is very professional and explained things."
R
"Mr. Abdulrahman was our technician today, and he was very helpful."
R
"Routine service call fixed a potentially serious problem."
J
"They were prompt, efficient, polite, and a good value!"
C
"He was thorough in his service and explanation."
t
"Julieann was very pleasant as well as professional."
H
"Our technician explained everything that he was doing and answered all my questions."
D
"Represented ESA very well and once again we are glad they installed our new system last year."
J
"The technician was professional and thorough."
J
"Terence Morgan stands out for his competence maintaining our heat pump system."
K
"Joshua was so friendly and helpful, and did an awesome job explaining what work he was doing and why."
T
"Maintenance contracts are affordable and checkups keep us up and running through summer and winter."
Jo
"Willy was very knowledgeable and thorough."
N
"Juliann always does a thorough maintenance check and has found areas that needed repair."
D
"Nicholas Gerez just completed a checkup of our systems."
D
"They have reasonable prices, and the technicians are friendly, polite, and knowledgeable."
C
"Nick was great today, came over for a maintenance service and ended up diagnosing a broken air conditioner unit, sourcing the part needed and fixing it all in one appointment!"
C
"Technician Benjamin was prepared, knowledgeable, and friendly."
J
"We've been with ESA for more than two decades and have never been disappointed."
M
"He let me know when he was on his way, explained his steps, and shared results with me."
D
"We wouldn't trust our systems to any other company."
W
"Their staff are very knowledgeable and perform an outstanding job."
Answered All My Questions
I’ve used ESA for many years. The tech JulieAnn, like all the others, answered all my questions patiently and worked efficiently.
They've Been Fantastic Every Step
I've worked with Environmental Systems Associates for many years and can honestly say they've been fantastic every step of the way. I have always felt that I have been dealing with true professionals who genuinely care about doing the job right. They've consistently gone above and beyond for me, communicating clearly, showing up when they said they would, and delivering quality work I can count on. I wouldn't hesitate to recommend them.
Annual A/C Maintenance Was Excellent
Annual A/C scheduled maintenance done by technician Nicolas Gerez was excellent! Highly recommend! I'm on the $22/month plan, which totals $264/year.
Service is top notch
We've been ESA customers for years. Service is top notch. Very reliable, professional, and knowledgeable techs. Highly recommend.
Outstanding service and support
Have been with this company for years. Professional and reliable. Always willing to go the extra mile to share information about my unit. Today Douglas Herb serviced my unit and was, as expected, outstanding service and support.
Technician Nicolas Gerez was fantastic
Technician Nicolas Gerez was fantastic again on 4/21/2026! Scheduling through the home office in Columbia, Maryland was great as always! ESA is fabulous!
ACE-Certified Technician Terrence Morgan Is the Best
Been using ESA for over a decade and ACE-certified technician Terrence Morgan is the best. He’s professional, courteous, and just all around a kind person. I always ask for Mr. Morgan for my service appointment and highly recommend ESA.
Prompt and Professional Technician
Our technician, Vontae Josey, was prompt and professional. He is always thorough and honest about what our system needs to function properly. Always happy to know he’s the tech coming to inspect and/or repair it.
Very Professional and Informative
Had my annual service for my HVAC systems. Vontae Josey was the technician and he is very professional and explained things. ESA has serviced our systems for years and I appreciate that they keep their customers informed.
Very helpful technician
Mr. Abdulrahman was our technician today, and he was very helpful not only with assessment and maintenance, but also with a tangential matter and with information. We have been pleased with ESA's services for many years.
Routine service call fixed a serious problem
Routine service call fixed a potentially serious problem. At the end of a hot, exhausting day, Ibrahim, the service tech, diagnosed a failing capacitor and bad landscaping by the community contractor, which buried the base of the unit, possibly causing corrosion or overheating. He had the parts, dug out and raised the unit, and stayed into dinnertime making sure it worked. Not a cheap fix but better than losing the unit. Well done. I have been using ESA for 25 years.
Fabulous job on my sewer backup
Environmental Systems did a fabulous job on my sewer backup. They were prompt, efficient, polite, and a good value!
Mr. Morgan, the technician was excellent.
Mr. Morgan, the technician, was excellent. He was thorough in his service and explanation. I will request Mr. Morgan for my next service in the fall.
Very pleasant and professional
Julieann was very pleasant as well as professional. Very thorough!
Very pleased with the service
We had our regular A/C maintenance today. Our technician explained everything that he was doing and answered all my questions. Very pleased with the service.
Worth the investment
Benjamin G. was our service tech. We were notified before his arrival, and he introduced himself and was ready to go! He was careful to be aware of our cats who might have wanted to help. Once he was done, he gave us the results of the checkup and some advice about when to change the humidity filter and recommended some settings for the winter. He represented ESA very well, and once again we are glad they installed our new system last year. Summer and winter have been good and worth the investment! We had our ducts sealed and noticed a big difference in summer comfort.
The technician was professional
The technician was professional and thorough. He also answered all my questions.
Terence Morgan Stands Out
We recently had a scheduled maintenance service. While we have had mixed experiences with technicians from ESA recently, Terence Morgan stands out for his competence maintaining our heat pump system.
They Were a Joy to Work With
I have used ESA for our HVAC service since my partner and I purchased our home last year, on a recommendation from our home inspector. I decided to get some plumbing work done with them recently, and they were a joy to work with! Joshua was so friendly and helpful, and did an awesome job explaining what work he was doing and why. He even fixed a small kitchen sink issue that’s been bugging me for like a year for free - an absolute king!!!
Always dependable company
Long-time customers of Environmental Systems. They installed our original systems, gas and heat pump, as well as the replacements. Maintenance contracts are affordable and checkups keep us up and running through summer and winter. Always dependable company.
Willy Innocent Is a Fabulous Technician
Willy Innocent is a fabulous technician! Willy was very knowledgeable and thorough. He checked everything on our heat pump system. Thank you, Willy, for your kindness as well!
Thorough Maintenance Check
Juliann always does a thorough maintenance check, and she has found areas that needed repair that she followed up, and the repairs were made. Can’t ask for more.
I like him!
Nicholas Gerez just completed a checkup of our systems. He’s been here before. A nice guy. I like him! We’ve been with ESA for over forty years.
I Can Recommend ESA Wholeheartedly
We've been an Environmental Systems Associates customer since 2004 - 22 years! I found them after I had a bad experience with a company that is now out of business. They have reasonable prices, and the technicians are friendly, polite, and knowledgeable. When our AC stopped being cool about 2 years ago, I called, and they came out pretty fast and diagnosed the problem and fixed it quickly. (Our capacitor had gone out after 20 years!) During that visit, we decided to sign up for the yearly maintenance plan. This plan gives you a discount on parts and gives you priority service if you have a breakdown. Since most breakdowns occur at the hottest or coldest times of the year, we thought it was worth it. Today, we had our second yearly maintenance inspection (no cost today because we have the plan), and they had sent me an email reminding me to make the appointment. No need for us to try to remember. It is reassuring that everything is working properly. The two technicians were nice and wore paper booties to protect our floors. I appreciated that. I can recommend ESA wholeheartedly.
They Have Always Given Us the Best Service!
We've used Environmental Systems Associates since our home was built almost 40 years ago and they have always given us the best service! Nick was great today, came over for a maintenance service and ended up diagnosing a broken air conditioner unit, sourcing the part needed and fixing it all in one appointment!
Scheduling Was Easy
Scheduling was easy, customer service rep was excellent. Technician Benjamin was prepared, knowledgeable, and friendly. Happy to have this company for my HVAC service.
Never Been Disappointed
We always get professional and courteous service from ESA. Julieann was our tech yesterday and she was superb, taking the time to answer our questions and discuss our options (we are at a repair-vs.-replace juncture with our failing 14-year-old HVAC system). We've been with ESA for more than two decades and have never been disappointed.
My Technician Willy Was Wonderful
I had my regularly scheduled maintenance appointment and my technician (Willy) was wonderful! He let me know when he was on his way, explained his steps, and shared results with me. He was super friendly, courteous, and knowledgeable. Highly recommend!
ESA has been our HVAC experts
ESA has been our HVAC experts for 30 years. We wouldn't trust our systems to any other company.
I Highly Recommend ESA
I highly recommend ESA for your A/C and heating systems. Their staff are very knowledgeable and perform an outstanding job. You will not be disappointed if you use this company.
