Best HVAC Services near San Marcos, TX (2026)

Find trusted HVAC professionals in San Marcos, TX, for reliable heating, air conditioning, ventilation, and indoor air quality services. Whether you need fast AC repair during a hot Central Texas summer, a new energy-efficient air conditioner, seasonal maintenance, furnace service, or emergency HVAC help, local contractors can help keep your home or business comfortable. Browse HVAC companies serving neighborhoods near Texas State University, Downtown San Marcos, Blanco Gardens, and surrounding Hays County areas. Compare services, customer reviews, hours, and contact details on this local business directory to choose an HVAC provider that fits your needs and budget. From cooling system tune-ups and thermostat upgrades to ductwork repairs and complete HVAC installations, find San Marcos HVAC technicians for residential and commercial projects. Start your search today and connect with local heating and cooling specialists in San Marcos, Texas.