Plumbing Contractor Philadelphia PA | Call N&N Supply Company
5911 Ditman St, Philadelphia, PA 19135
Company Overview
Founded in 1924 as a small neighborhood plumbing store by Samual A. Mayberry, N&N Supply Company has been a cornerstone of Philadelphia's trades for a century. Incorporated in 1960 and now operating from a 49,280-square-foot facility in Northeast Philadelphia, we've grown into a trusted wholesale supplier for plumbing, heating, and air conditioning. Our team of seventeen professionals brings over 264 combined years of experience to every job, serving both residential and commercial clients across the Delaware Valley. From our roots on Tacawanna Street to our modern warehouse, we provide the products and expertise that Philadelphia contractors and homeowners have relied on for generations.
Frequently Asked Questions
Do you provide HVAC installation services for older Philadelphia homes?
Yes, our team has extensive experience with the unique HVAC needs of Philadelphia's historic and varied housing stock. Whether you need a full system replacement for a row home or a ductless mini-split for a hard-to-reach space, we can recommend and install the right equipment. Our 49,280-square-foot facility stocks a wide range of systems, including boilers and mini-splits suitable for local architecture.
What does a plumbing inspection involve, and why is it important?
A professional plumbing inspection from N&N involves a thorough check of your pipes, fixtures, water pressure, and drainage systems to identify potential issues like minor leaks, corrosion, or outdated components. For Philadelphia residents, this is especially valuable to prevent problems common in our area, such as broken shutoff valves or dishwasher line failures, which can lead to significant water damage. Our inspectors draw on decades of local experience to provide clear, actionable advice.
I have a leaking dishwasher or a broken shutoff valve. Can N&N Supply help?
Absolutely. These are common issues we see in Philadelphia homes. For a leaking dishwasher, we can inspect the supply lines, connections, and drain to pinpoint the source. For faulty shutoff valves—a frequent problem in older plumbing—we provide the correct replacement parts and expert installation to ensure a reliable seal. Addressing these quickly with our local expertise helps prevent more extensive water damage to your home.
Main Services
- HVAC installation or replacement
- Plumbing inspection
Business Location & Hours
| Mon: | 7:30 AM - 4:00 PM |
| Tue: | 7:30 AM - 4:00 PM |
| Wed: | 7:30 AM - 4:00 PM |
| Thu: | 7:30 AM - 4:00 PM |
| Fri: | 7:30 AM - 4:00 PM |
| Sat: | Closed |
| Sun: | Closed |




