HARMAN & HEATILATOR PRESSURE IGNITER Fits Harman Models: ~ PC45 (The Harman PC45 had 2 different igniter elements 3-20-00450, which was the shorter version The shorter element is no longer available, this is the proper replacement igniter for all PC45 stove models.) ~ PB105 The PB105 boiler serial #008341123 and higher ~ PF100 (The PF100 furnace has 2 serial # cutoffs for pressure ignition. 004 serial #’s from #004351831 and greater, 008 serial #’s from 008350087 and greater.) ~ PF120 ( ALL MODELS) ~ HydroFlex 60 (HF60) Fits Heatilator Eco-Choice Models: ~ BH60 ~ BH105 ~ BA100 ( serial # 004351831 and higher) *NOTE: If you’re igniter burns out, you will want to inspect the air pump. In over 80% of the cases regarding igniter failure, the reason is because of an air pump failure.