Looking for Local HVAC Experts? COUNT ON OUR HVAC COMPANY IN LA PORTE, IN Is your air conditioner acting up? Do you need a new furnace? You can turn to ASM Mechanical, LLC. Our local HVAC company provides a full range of HVAC services, including repairs, replacements and new installations, for homeowners in La Porte, IN and surrounding areas. You can trust us to handle your air conditioner, furnace or water heater with the utmost care.