"HGH Mechanical: Affordable HVAC Sales & Service in Harford, Baltimore County and Surrounding Areas HGH Mechanical, Inc. is one of the leading HVAC service providers of heating, ventilation, and air conditioning installation and service in and around the Baltimore metropolitan area. Serving local Bel Air, MD and surrounding residential and light commercial markets (Baltimore/Harford Counties) for over three decades, we specialize in finding cost-effective solutions for our customers – whether they are installing HVAC systems for the first time, expanding their existing systems, or installing gas fireplaces. With over 800 five-star reviews, make us your first call for sales, service, or installation. Our vision is to be recognized as a leader with residential and the light commercial HVAC industry in and around the Baltimore Metropolitan area. We reach this goal by achieving high sales and a reputation for diagnosing and servicing HVAC equipment and systems promptly and correctly. In order to achieve this vision, we sell high-quality, state-of-the-art equipment that is energy efficient and environmentally safe. We are committed to our customers, and accordingly, we concentrate our efforts on servicing the equipment we sell with trained technicians. HVAC Services We service all manufacturer brands of furnaces, air conditioners, and boilers, such as Carrier, American Standard, Bryant, Burnham Water/Steam Boilers, Heil, Luxaire, Payne, Rudd, Trane, Weil McLain Water/Steam Boilers, Williamson Water/Steam Boilers, and York equipment. We pride ourselves in the state-of-the-art equipment and systems we carry and the superior service we deliver. We offer our customers service plans and services that can include: Comfort option and efficiency consulting Indoor air quality services Zoning Duct system Gas fireplace installation Gas line installation Humidification Air cleaners "