Duff Co. | Phila. Plumbing & Heating Supply | Pumps | Water Conditioning – 201 E. Lafayette Avenue, Norristown PA 19401

Supplying Plumbing, Heating, Pumps, Water Treatment Equipment, and more to the Philadelphia Region.

Discover the duff difference

PROUDLY SERVING THE NORTHEAST FOR OVER 75 YEARS

Duff Company was founded in 1947 by Richard “Dick” Duffine. Today, Duff Co. is run by Dick’s son Geoff, and grandson Alex, along with Geoff’s son-in-law, Michael Genkin. Together, The Duff Co. family is dedicated to growing its services while maintaining the superior level of quality that has become its hallmark.

We offer the widest product selection around – from plumbing, heating and industrial supplies to pumps, steam specialties, multi-family housing supplies, water treatment equipment, and more. With a staff of more than fifty and an average tenure of more than 20 years, we are truly a family company, and we look forward to many more years serving Norristown and beyond.

Our customers include:

Hot Products:

Healthcare & Hospitals
Schools & Universities
Municipalities & Government Facilities
Correctional Facilities
Commercial Office Buildings, Hotels & Casinos
Apartments & Dormitories

Well Drillers & Pump Service Companies
Water Treatment Dealers
OEMs
Resellers
Maintenance Teams & Facilities Departments
Nursing Facilities & Retirement Communities

Acid washed carbon is the gold standard for chlorine and chloramine removal.

Acid Washed Carbon

Small particle reduction with high flow rates and low pressure drops.

Pentek
FloPlus

Meet Stenner’s Fixed and Adjustable Chemical Output Pumps.

Stenner Metering Pumps

Grundfos’ CME
Horizontal Multi-Stage
Pump.

Grundfos
CME

Duff Co. Named Pennsylvania Apartment Association Member of The Year

Duff Co. Multi-Family Solutions is a proud recipient of the Supplier Member of the Year award by the Pennsylvania Apartment Association. We are pleased to offer maintenance and renovation solutions to apartment owners and managers throughout the Philadelphia region and beyond.

Proud to Serve as Exclusive Master Distributor for the complete line of Pentek filtration products and Autotrol valves

For more than a generation, we have been on the cutting edge of water treatment solutions, and since 2018, we have served as the exclusive Master Distributor for the complete line of Pentek filtration products and Autotrol valves and components. Whether you manage water filtration for oil and gas or power industries, or for chemical plants, paints and coatings, pharmaceutical, or the food and beverage industry, we have everything you need – all made in the USA.