The Source â€" Generation after Generation

We're not your typical wholesaler of plumbing and heating supplies. For one thing, we've been in business since 1939. We know our stuff.

For another, we handle only the finest, highest-quality brands – as we've done throughout our long history.

Today we're still central Indiana’s most complete source of plumbing/heating supplies and plumbing/heating expertise. Our customers – primarily plumbing, heating, and mechanical contractors – know us and trust us to provide the pipe, valves and fittings, hydronic equipment, and related supplies they need for virtually any residential or commercial project. They trust us as well for the technical experience and understanding to support what we sell.

Whatever you need in the way of plumbing and heating supplies, technical expertise, and consultation, you’ll find it worth your while to contact Winthrop Supply.

When you need pipe and fittings for the big jobs, the heavy-duty jobs, come to us. We stock a huge inventory of top-quality, top brand products that’ll help you tackle any application.

Looking for more than off-the-shelf pipe and fittings? We can custom-cut your pipe to the exact lengths you specify, package it with the necessary fittings, and ship it to you direct.
Recent News
Architects, interior designers, and plumbing contractors throughout central Indiana have been spreading the word that Winthrop Supply is the Indy go-to source for Elkay water coolers. Of course, that’s not really news. We’ve carried Elkay water coolers for decades. The news is that, with the economy picking up, there’s a lot of new commercial building going on our region – as well as a lot of office, retail space, and school renovation – and, yep, most of those buildings need water coolers.
Plumbing gets old. What doesn’t? Who doesn’t? Winthrop Supply may not be able to rejuvenate you, but we might liven up your spirits with what we have to perk up your plumbing! We’re talking about our huge inventory of the finest plumbing pipes and fittings available in the Indianapolis area. Not only that, but we’re also talking about our plumbing pipe and fitting services, which customers all over Indy and beyond will likely tell you are also the finest of any plumbing supplier around.