Description
This low air flow sail switch is designed for Atwood Hydroflame small series furnaces manufactured before serial number 72498929. It ensures your furnace operates safely by detecting proper air movement before ignition, making it a critical safety component in your RV heating system.
Compatible with the following Atwood / Dometic furnaces (pre-72498929 serial numbers):
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AFMD Series: 16111, 16121, 16131, 16141, 16151, 20111, 20121, 20131, 20141, 20151
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AFSAD Series: 12111, 12121, 12131, 12141
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AFSD Series: 12111, 12121, 12131, 12141, 16111, 16121, 16131, 16141, 20121, 20131, 20141
Key Features:
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Direct replacement for original sail switch units
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Designed for precise fit and reliable function
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Made in the USA for long-lasting performance
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Easy installation with no modifications needed
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Helps protect your furnace from improper startup
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Limited 1-Year Warranty
This is the correct version for small series furnaces built before the transition to the bent blade sail switch design. If your furnace was manufactured after the cutoff serial number, please verify with the product image or consult part number 33129 or 31904, depending on your switch style.
Fast shipping available Canada-wide and to the U.S.