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Permanent RV part identity

Suburban 525003 Sail Switch

Suburban Part 525003

Suburban 525003: Airflow-proving sail switch listed by Suburban for SF-20/25/30/35/42Q/FQ furnaces. Review manufacturer model references and current supplier availability on RVPartScan.

Suburban 525003 Sail Switch — supplier product photo 1 — Supplier photo. Compare connectors, dimensions and the part number before ordering.

Suburban 525003 Sail Switch — supplier product photo 2 — Supplier photo. Compare connectors, dimensions and the part number before ordering.

Suburban 525003 Sail Switch — supplier product photo 3 — Supplier photo. Compare connectors, dimensions and the part number before ordering.

Also called: sail switch, airflow switch, blower proving switch

Manufacturer part referenceReplacement part1 recently verified listing2 suppliers with recorded evidenceLast checked Oct 13, 2026

Manufacturer model evidence

Models that reference this part number

Suburban SF-20FQ

Sail Switch · diagram item SAIL-SWITCH

Suburban manual 205624 lists sail switch 525003 for SF-20/25/30/35/42Q/FQ.

Model reference source

Suburban SF-20Q

Sail Switch · diagram item SAIL-SWITCH

Suburban manual 205624 lists sail switch 525003 for SF-20/25/30/35/42Q/FQ.

Model reference source

Suburban SF-25FQ

Sail Switch · diagram item SAIL-SWITCH

Suburban manual 205624 lists sail switch 525003 for SF-20/25/30/35/42Q/FQ.

Model reference source

Suburban SF-25Q

Sail Switch · diagram item SAIL-SWITCH

Suburban manual 205624 lists sail switch 525003 for SF-20/25/30/35/42Q/FQ.

Model reference source

Suburban SF-30FQ

Sail Switch · diagram item SAIL-SWITCH

Suburban manual 205624 lists sail switch 525003 for SF-20/25/30/35/42Q/FQ.

Model reference source

Suburban SF-30Q

Sail Switch · diagram item SAIL-SWITCH

Suburban manual 205624 lists sail switch 525003 for SF-20/25/30/35/42Q/FQ.

Model reference source

Suburban SF-35FQ

Sail Switch · diagram item SAIL-SWITCH

Suburban manual 205624 lists sail switch 525003 for SF-20/25/30/35/42Q/FQ.

Model reference source

Suburban SF-35Q

Sail Switch · diagram item SAIL-SWITCH

Suburban manual 205624 lists sail switch 525003 for SF-20/25/30/35/42Q/FQ.

Model reference source

Suburban SF-42FQ

Sail Switch · diagram item SAIL-SWITCH

Suburban manual 205624 lists sail switch 525003 for SF-20/25/30/35/42Q/FQ.

Model reference source

Suburban SF-42Q

Sail Switch · diagram item SAIL-SWITCH

Suburban manual 205624 lists sail switch 525003 for SF-20/25/30/35/42Q/FQ.

Model reference source

Supplier evidence

Availability observations for 525003

Supplier availability is observational data. It can disappear or become stale without changing this permanent part identity.

Suburban RV PartsRecently verifiedChecked Oct 13, 2026

Suburban Furnace Sail Switch (233382) SF/SFV Series 525003

Condition: Not specified by supplier

$16.89

United RV PartsVerify availabilityChecked Aug 31, 2026

Suburban | RV Furnace Sail Switch | 525003 | SF/SFV Series

Condition: Not specified by supplier

$8.99

Confirm the part number, model and source documents before ordering. Check final price, condition and availability with the supplier.