"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... read full review »