info@duffco.com

201 E. Lafayette Street Norristown, PA 19401

Philadelphia Plumbing & Heating Supply | Pumps | Water Treatment
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Act now to save on overstock water heaters!

  • Act now to save on overstock water heaters!

    October 22, 2020

    Bradford White 100 GallonCommercial Flue DamperElectric Ignition Gas Water Heater (D-Series) D-100T-199-3N Actual Product Not Shown. ONLY FIVE UNITS REMAIN We are clearing inventory to…

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  • Under Counter Water Heater Overstock Sale

    September 4, 2020

    AO Smith® ProLine® Lowboy Top Connect electric water heaters require less room than traditional water heaters. They are ideal for tight spaces such as under…

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  • Duff Co. is Open During the COVID-19 Crisis

    March 13, 2020

    March 13, 2020 We are open! Whether you manage a commercial building with limited operations or a multi-family facility strained by stay-at-home orders, COVID-19 has…

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  • Duff Co. Acquires Wholesale Window Blinds & Flooring Company Fels Supply

    January 1, 2020

    January 1, 2020 Norristown-based Duff Co., wholesaler of plumbing and heating supplies, cabinets and multi-family housing supplies, pumps, and water treatment systems and components, is…

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  • Order Apartment Supplies NOW!

    August 31, 2018

    November 1, 2018 Announcing a breakthrough in how Duff Co. does business. Effective immediately, customers can order Multi-Family Housing supplies ONLINE. We are pleased to…

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  • New specialized multi-family site coming

    May 2, 2018

    May 2, 2017 Exciting things are happening in our Multi-Family Housing department. Stay tuned for some MAJOR updates to our website. Soon you will be…

    Read More

  • Duff Co. Named Exclusive Master Distributor for Pentek & Autotrol

    March 28, 2018

    Customer Service, Expertise & Coverage Area Key in Selecting Duff For Immediate Release Norristown, PA, March 1, 2018—Duff Company, the premier water treatment OEM in…

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  • COSTARS

    September 19, 2017

    September 18, 2017 Duff Co. is a proud member of the Pennsylvania COSTARS program. What is COSTARS? COSTARS is Pennsylvania’s cooperative purchasing program. The COSTARS…

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  • Mascots That Won’t Scare You

    May 19, 2017

    May 18, 2017 Did you know that the county in which Duff has its world headquarters–Montgomery County, PA–is the first county in the United States to…

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  • Rainbows and Unicorns

    April 27, 2016

    April 27, 2016 Yesterday we endured torrential downpours. The weather can bring about dower moods; bring traffic to a halt; and otherwise ruin well laid…

    Read More

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    • Plumbing and Heating
    • Pumps
      • Chemical Feed / Water Treatment
      • Grundfos
      • Industrial Boiler Pumps
      • Irrigation & Agriculture
      • Machining & Manufacturing
      • Plumbing & HVAC Pumps
      • Pressure Boosting
      • Pumps Line Card
      • Sump, Sewage & Effluent
      • Well Pumps
    • Specials & Announcements
    • Water Treatment
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Philadelphia Plumbing & Heating, Pumps, and Water Treatment

201 E. Lafayette Avenue, Norristown PA 19401

Phone: 610-275-4453
Fax: 610-279-6299

Hours:
Monday – Friday – 7:30 am to 4:30 pm
Saturday – closed
Sunday – closed
(We are still open for emergency service during other times.)

© 2026. Duff Company.