Winsupply of Grand Junction is a full service plumbing and heating distributor. Our customers are primarily licensed plumbers, hot water heating contractors and handyman services. Grand Junction Winnelson, now Winsupply of Grand Junction was established in 1965. Rick Thatcher is currently president and has been with the company for 37 years. Our present location is a 17,500 square foot metal building on ground level with a paved fenced in area for easy loading and off-loading.