K.E. Seifert, Inc. is a plumbing, heating, and cooling utility contractor based in Langhorne, serving Philadelphia, PA, and the surrounding Tri-State area. Established in 1987, the company offers a wide range of services including HVAC installation, repair, and maintenance for central air conditioners and ductless mini-splits, as well as indoor air quality solutions. They also provide plumbing and underground utility services. With over 35 years of experience, K.E. Seifert, Inc. is available 24/7 for emergency service.

Haddad Plumbing & Heating Inc is a family-owned business based in Newark, NJ, specializing in large-scale plumbing and HVAC design, installation, repair, and maintenance. Serving the New York Metropolitan area, they work closely with contractors and builders to provide customized solutions for new construction projects and existing properties. Their capabilities include comprehensive HVAC services such as air conditioning, furnace, heat pump, and boiler installation and repair. Established in 1999, Haddad Plumbing & Heating brings over two decades of experience to their projects.