Marvin's Heating & Air Conditioning has served San Marcos & surrounding areas since 1982. Marvin's offers fast, dependable & reliable sales, service, repair & installation on all makes & models. Marvin's Heating & Air Conditioning offers both residential & light commercial. LIC # TCALB 000835E Marvin Nite - Owner; David Harrell. Sales,Service,Repair,Installations,Residential & Light Commercial. 10% discount for Seniors,Military & First Responders