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Whole-house (furnace) humidifier water panels & pads
These panels fit bypass and fan-powered humidifiers mounted on the ductwork. They are sized by the humidifier model, not by the furnace brand. Replace at least once per heating season; GeneralAire notes that washing a vapor pad strips its absorbent coating.
AprilAire Water Panel 35
Fits: 300 (AprilAire), 350 (AprilAire), 360 (AprilAire), 560 (AprilAire), 560A (AprilAire), 568 (AprilAire), 600 (AprilAire), 600A (AprilAire)…
Lowest verified: $14.99 at HVACDirect (checked 2026-11-11)
Fits: 300 (AprilAire), 350 (AprilAire), 360 (AprilAire), 560 (AprilAire), 560A (AprilAire), 568 (AprilAire), 600 (AprilAire), 600A (AprilAire)…
Lowest verified: $14.99 at HVACDirect (checked 2026-11-11)
AprilAire Water Panel 10
Fits: 110 (AprilAire), 220 (AprilAire), 500 (AprilAire), 500A (AprilAire), 500M (AprilAire), 550 (AprilAire), 550A (AprilAire), 558 (AprilAire)
Lowest verified: $15.98 at Home Depot (checked 2026-11-11)
Fits: 110 (AprilAire), 220 (AprilAire), 500 (AprilAire), 500A (AprilAire), 500M (AprilAire), 550 (AprilAire), 550A (AprilAire), 558 (AprilAire)
Lowest verified: $15.98 at Home Depot (checked 2026-11-11)
GeneralAire 990-13 Vapor Pad
Fits: 709 (GeneralAire), 990 (GeneralAire), 1040 (GeneralAire), 1042 (GeneralAire), 1137 (GeneralAire), SL16 (GeneralAire)
Lowest verified: $15.00 at eBay (Buy It Now listing) (checked 2026-11-11)
Fits: 709 (GeneralAire), 990 (GeneralAire), 1040 (GeneralAire), 1042 (GeneralAire), 1137 (GeneralAire), SL16 (GeneralAire)
Lowest verified: $15.00 at eBay (Buy It Now listing) (checked 2026-11-11)
GeneralAire GA19 Vapor Pad
Fits: 900 (GeneralAire Elite), 1000 (GeneralAire Elite)
Price not yet verified — see part page
Fits: 900 (GeneralAire Elite), 1000 (GeneralAire Elite)
Price not yet verified — see part page
Honeywell HC26P Whole-House Pad
Fits: HE200 (Honeywell), HE250 (Honeywell), HE260A (Honeywell), HE260B (Honeywell), HE265 (Honeywell), HE280 (Honeywell), HE360 (Honeywell)
Lowest verified: $20.99 at eBay (Buy It Now listing) (checked 2026-11-11)
Fits: HE200 (Honeywell), HE250 (Honeywell), HE260A (Honeywell), HE260B (Honeywell), HE265 (Honeywell), HE280 (Honeywell), HE360 (Honeywell)
Lowest verified: $20.99 at eBay (Buy It Now listing) (checked 2026-11-11)
Honeywell HC22P Whole-House Pad
Fits: HE100 (Honeywell), HE150 (Honeywell), HE220A (Honeywell), HE225 (Honeywell), HE240 (Honeywell)
Lowest verified: $13.99 at eBay (Buy It Now listing) (checked 2026-11-11)
Fits: HE100 (Honeywell), HE150 (Honeywell), HE220A (Honeywell), HE225 (Honeywell), HE240 (Honeywell)
Lowest verified: $13.99 at eBay (Buy It Now listing) (checked 2026-11-11)