Boulder Winnelson

Boulder Winnelson supplies heating and plumbing equipment to contractors and homeowners across Boulder County from its location at 1950 Industrial Lane in the 80301 ZIP code. The supplier operates under the Winsupply Inc. wholesale network, serving the Boulder area with hydronic heating components, plumbing supplies, and related equipment. With a perfect 5.0-star rating across 14 verified customer reviews, the shop has built a four-decade reputation among local tradespeople. The counter opens at 7 AM Monday through Friday, closing at 4:30 PM, with Saturday and Sunday reserved for will-call orders and emergency contractor requests.

What distinguishes Boulder Winnelson from general supply houses is its specialized focus on hydronic heating systems, the pipes, valves, pumps, and boilers that move hot water through radiant floor systems and baseboard installations. The counter staff includes heating system specialists who can troubleshoot hydronic problems over the phone or help contractors select correct components for complex retrofit projects. Reviewers consistently describe the counter service as extremely fast, with staff treating customers like family rather than transactional buyers. The shop carries product lines suitable for both residential furnace replacements and light commercial boiler installations.

Several reviewers specifically name technicians who provided exceptional service. Jimmy handled a customer care situation that left the homeowner satisfied and their own customer happy. Robert Zirkelbach mentions the shop dog Rayla, adding a neighborhood feel to the commercial environment. Gary Carver's review emphasizes that contractors who bypass Boulder Winnelson for other suppliers are quote, blowing it, unquote, citing the staff's deep product knowledge. Nicky Meatballs describes the operation as the best plumbing supply house available, specifically noting heating expertise alongside fast counter service.