As of 2015, McClain boiler parts are available through e-commerce websites such as Supplyhouse.com. McClain is affiliated with many distributors who can be located using the "Find a Distributor" tool at weil-mclain.com. Many boiler parts may be unavailable for purchase due to the discontinuation of certain products.
Weil-McLain has compiled a resource library that contains a list of discontinued and current parts for their products. For quality assurance purposes, one should consult this document before the purchase of any replacement parts.
Consulting a contractor may be necessary to replace a dysfunctional part. Consumers can locate contractors using the "Locate a Contractor" tool on the Weil-McLain website.