A/1 Heating and Air Conditioning Inc. is locally owned and operated and is committed to providing prompt and friendly customer service matched by none. We are one of the largest Carrier factory authorized dealers in Carroll County. We have proudly provided service for the Westminster and surrounding areas since 1983. We offer Residential and Commercial Sales, Service and Installation. the services that we offer are for Air Conditioning,Heating,Heat Pumps,Furnaces,Humidifiers,Maintenance Contracts,Air duct zoning,Indoor Air Quality,Outdoor wood broilers Ozone Friendly Systems -Free Estimates on Replacements -100% Satisfaction Guaranteed