Company News Best of Howard County 2021 Winner November 8, 2021 We are overwhelmed with gratitude and we can’t thank you enough for voting us BEST OF HOWARD FOR THE 20TH YEAR!!! Continue Reading 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.