Environmental
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Residential Air Conditioning & Heating
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"I learned first-hand why ESA wins "Best in Columbia" year after year! I confidently refer you to friends, co-workers, and neighbors."— D.S., Columbia, MD
Services:
- System Replacement
- Converting to Gas
- Maintenance
- System Repair
- Seasonal Tips
- Choosing a Contractor
- Product Brochures
About ESA:
Advanced Technology for Advanced Comfort.
Choosing an HVAC Contractor
The Air Conditioning Contractors of America
(ACCA) suggests that consumers consider the
following items when choosing a contractor.
Be sure that:
- Your contractor is properly licensed. In
Maryland, this means having a Master's
"HVACR" license, as well as an electrical
and/or a gas fitter's license. Your
contractor's technicians should all carry an
apprentice or journeyman's HVACR license and
be certified to handle refrigerant.
- Your contractor carries adequate business
and workers compensation insurance. In Howard
County, a performance bond is not a
requirement.
- Your contractor has adequate technical
and practical experience. Technicians who are
"NATE Certified" have passed rigorous exams
by the North American Technician Alliance to
certify that they have the necessary
mechanical knowledge and expertise to service
heating and cooling systems.
- Your contractor provides you with a
written contract.
- Your contractor is willing and able to
provide warranty service.
- You examine factors such as references,
reliability and quality of service in
addition to price.





