At Davis Modern Heating & Cooling, we rate customer satisfaction as a top priority. We’re looking to build relationships with the homeowners of Norristown, PA and the surrounding areas. With over 165 years in the business, we’re committed to bringing top brands and the latest technology to our neighborhood customers. We specialize in the installation, repair and maintenance of heating and cooling systems, as well as geothermal options. You name it, we do it! Company founded in 1850. Over 165 years in business. America’s oldest family owned mechanical contractor. 24/7 Emergency Service Available. Servicing all brands. Office Hours M-F 8am – 5pm, Sat & Sun by appointment. Financing options available.