Gessler was a resident of Cranford, New Jersey for 58 years. He was active in civic life, founding Cranford's recycling program in 1971. He worked to establish Cranford's Conservation Center, chairing the Environmental Commission for several years. Gessler served as a leader in the Boy Scouts for more than 20 years. He received the Silver Beaver award in 1962. In 1999, the mayor of Cranford recognized Gessler's positive community impact with a resolution of Grateful Appreciation.