ORIGINCATALOG
AprilAire 600M Large Bypass Whole-House Humidifier (Manual)
No OriginCatalog stamp — findings only · AprilAire · 6 origin facts documented
AprilAire states whole-house humidifiers are designed and assembled in the USA using US and global components. Humidifiers are built at the Poynette, Wisconsin plant. Component origin is not all US, so there is no OriginCatalog stamp.
Origin findings
Each row is Yes, No, or Not substantiated. Empty cells stay visible. This is not a patriotism score.
| Finding | Status | Source |
|---|---|---|
| Maker’s origin sentence for this model | Yes AprilAire Whole-House Humidifiers are designed and assembled in the USA utilizing US and global components by AprilAire, the leader in Indoor Air Quality solutions for the home since 1954 | manufacturer_statement |
| Factory / mill named for this model | Yes Poynette, WI | factory_page |
| Final assembly or processing in the US (FTC prong 1) | Yes | factory_page |
| All significant processing in the US (FTC prong 2) | Not substantiated | — |
| All or virtually all components made and sourced in the US (FTC prong 3) | No | manufacturer_statement |
| Principal assembly in the US | Not substantiated | — |
| Assembly is substantial (not screwdriver-only) | Not substantiated | — |
| Last substantial transformation in the US | Not substantiated | — |
| Article marking (nameplate / incised COO) | Not substantiated | — |
| Retailer-stated country of origin | Not substantiated | — |
| Certification listing holder (UL / NSF / IAPMO) | Not substantiated | — |
| Named imported content the maker disclosed | Yes Maker discloses US and global components in whole-house humidifiers. | manufacturer_statement |
| US company (entity + US location) — not a product-origin stamp | Yes AprilAire / Research Products Corporation, 1015 East Washington Avenue, Madison, WI 53703. Humidifier plant in Poynette, WI. | factory_page |
Last origin review: 2026-09-13. Next due: 2026-10-13 (30-day cycle).
| Date | Outcome | Stamp |
|---|---|---|
| 2026-09-13 | confirmed | none |
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