Encompassing three essential functions – heating, ventilation, and air conditioning – your HVAC system controls both the temperature and quality of the air within your home or business. Because your HVAC unit has a direct impact on the air you, your family, your employees, and your customers breathe, it’s important to purchase a reliable system from a trustworthy company. With locations in Sterling and Alexandria, Cardinal Plumbing Heating & Air Inc. installs state-of-the-art HVAC systems for Northern Virginia homes and businesses. As a locally owned company, we are committed to the community we serve and are proud to provide heating, cooling, and ventilation solutions to area home and business owners.