Sign up for our newsletter

Trust the Experts

Founded in 1923, Oswald Supply is family owned and operated through four generations. Thank you to our loyal customers who make us proud to celebrate 90 years of service to the heating and plumbing community.

Read More >

Same Day Shipping

Most items will ship out of our warehouse the same day if ordered before 2PM

Read More >

Visit Our Blog

Product Highlights, Instructional Videos, News and Industry Events

Read More >
Popular Categories

Tankless Coils

Stainless Steel
Trash Chute Doors

Bakers Oven Parts

Cleaver Brooks
Handhole Plates

Boiler Door Clamps

Radiator Push Nipples

Fireside Gasket Kits

Smith Boiler Sections

Manhole Plates