HVAC Installer. Stanley W. Cooper, Inc. is a 68-year-old family owned full-service plumbing and HVAC company located in Willow Grove, PA. We are currently looking for an experienced HVAC installer, full time. You will perform installation of residential and commercial HVAC systems. Qualifications. 5 years’ HVAC service and controls experience is preferred. Ability to interact with customers. Strong attention to detail. Ability to work independent...