We stock the following replacement parts for Modine HD, PA, PAE, PD, PV, and PDP gas unit heaters. You can also search for the Modine part you need by typing the part information in the search area at the top of the page. If you need an installation manual or wiring diagram for a Modine heater, they are available on Modine's technical support page. Older discontinued models can be found in the Archived Documents section.