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Central PA's Rheem Heating, Cooling and Water Heater Distributor
For over three decades Certified has established a reputation as Central PA’s Leading Window, Siding and Door Distributor. A reputation built on a solid foundation of quality products, product expertise, dependable delivery, competitive pricing, and a dedication to serving our customers. Certified prides itself on being Central PA’s premier source for windows, siding, entry and garage doors.