Dometic Atwood Furnace Sail Switch | 4 Part Numbers

No airflow, no gas. A furnace sail switch is the paddle in the blower stream that proves the fan is moving air (about 75% of motor speed) before the board opens the gas valve — a stuck or broken one is the most common cause of a furnace that spins up and never lights.

Options

• 36165 (4471008700) — sail switch with bracket upgrade; AFMD25111–35151 (serial after 72489156), AFLD35/40 (after 72991127), AFLA series; replaces 33082 and legacy 31094
• 36160 (4471008699) — 0.1 A @ 30 VDC, 2" x 1/2" paddle; AFSD/AFSAD 12-20 (serial after 72498929), AFMD16/20, DFSD series
• 31377 — Hydro Flame low-air-flow switch; Everest 85xx-II/III/IV & LD, 89xx-I/II/III & LD, 1522/2334/2540 2-stage; replaces AT35050, AT35052, AT35137, AT37716
• 37022 — high-temperature sail/limit switch for Atwood 8500-III series

Key Features

• Air-proving safety switch
• Genuine Dometic / Atwood
• Direct fit

Specifications

• Brand: Dometic
• Type: Furnace Sail Switch
• Options: 36165; 33082; 36160; 31377; 37022