Performed heating maintenance on a Trane 2 stage 96% efficient propane-fired furnace Pulled and cleaned flame sensor Checked Condensate lines Adjusted burner Manifold pressure also had to increase house regulator pressure to get burner pressure correct 10"wc high fire 6"wc low fire Temperature rise 35⁰ for both fire rates 16x25x1 filter is in OK condition Signed up for silver maintenance plan