Burnham boiler replacement parts can be found online at SupplyHouse.com and Parts4Heating, as of 2015. Each of these websites has a broad selection of replacement parts.
SupplyHouse.com allows searching for parts by product or SKU number. Parts can be added to the customer's cart until ready to check out. The site offers free shipping on orders over $150. A toll-free number is available for customer assistance.
Parts4Heating supplies OEM parts from several manufacturers and offers a parts number search and a toll-free number for customer questions. Orders can be tracked, and customers can check the status of an order by logging in to their accounts.