PDC Spas, founded in 1957 as Plastic Development Company, is a privately held Pennsylvania manufacturer of hot tubs and swim spas. Its Williamsport craftsmen design and produce the spas at the same West Fourth Street location where the company rebuilt after a 1983 facility fire. The company also makes fiberglass products and introduced its patented TruSwim propulsion swim spa series in 2018.
Strong SpasStrong Spas manufactures portable hot tubs at its production facility in Northumberland, Pennsylvania. The company says its spas are custom-built, rather than mass-produced, and are shipped to customers in more than 40 countries. Its manufacturing includes premium acrylic-shell construction and rotational molding for its G-2 and Durasport spas.NORTHUMBERLAND, PA
Cardinal Systems IncFounded in 1976 in a 5,000-square-foot garage, Cardinal Systems Inc. is a family-owned American manufacturer of customizable swimming pool and spa products, with custom fabrication capabilities for other industries. Now operated by the Bradley family’s third generation, the company works from a 350,000-square-foot Schuylkill Haven facility and has grown to more than 340 employees across its divisions. Its manufacturing portfolio includes Cardinal and Fox Pool brands, along with Quaker Plastics and Cardinal Fabrication & Manufacturing.SCHUYLKILL HAVEN, PA
Endless PoolsFounded in 1988, Endless Pools is a Philadelphia-area aquatic fitness company known for pioneering the swim-in-place current. Its compact pool systems serve home users, commercial facilities, and competitive swim programs in more than 100 countries, and the company is the official swim spa supplier of USA Swimming and the U.S. Swim Team.339920ASTON, PA
Cover and Supply CompanyBuilt by former spa-industry retailers who wanted shorter lead times and more consistent quality, Cover & Supply Company makes custom hot tub covers at its manufacturing shop in Quakertown, Pennsylvania. Its handbuilt covers are measured to each spa and use Tuffshield fabric, Aqualock sealing, and ExactoCut foam shaping for a precise, moisture-resistant fit. The company serves spa dealers across the Northeast and Mid-Atlantic, using its eastern Pennsylvania location to keep freight and turnaround times down.