Distributing plumbing and heating products with exceptional service – always at the best value. Founded in 1946. Plumb Supply Company is a family owned, Midwest based, Plumbing, HVAC and PVF distributor serving the needs of professional plumbing and heating contractors. With locations across Iowa and Missouri, a large fleet of trucks, and a customer-focused staff, we strive to deliver quality, innovation and value to customers of every size, when you need it.