Welcome to Ozone Heating and A/C Inc. Proudly providing Baltimore, MD, and surrounding areas with HVAC Services When you call Ozone Heating and A/C for your HVAC services, you'll receive the same exceptional service and high quality installation that owner John has provided to his customers for over 30 years. You can expect to benefit from a team of industry experts who are friendly, professional and honest. We carry all brands at affordable prices and are available for prompt HVAC repair and service. Proud to offer Senior and Public Service Discounts Ozone Heating and A/C Inc. is proud to offer a 10% service call discount to senior citizens, military, police, firefighters and EMS as our way of saying thanks to the women and men who serve our great country and keep us protected at home and abroad.