SupplyHouse.com and MidwestHVACParts.com both sell an assortment of replacement parts for Armstrong oil furnaces, as of 2015. These online suppliers carry many key components, including ignitors and pressure switches, to keep Armstrong furnaces operating properly.
SupplyHouse.com offers free shipping on orders totaling $150 or more, and its extensive selection of parts makes it easy for shoppers to find needed Armstrong furnace replacement components.
MidwestHVACParts.com lists manufacturer's suggested retail prices alongside its asking prices, giving customers a simple indication of their savings. The company provides easy online ordering at all hours and toll-free telephone-based customer assistance during regular weekend business hours.