Whole-House Humidifier Coverage Claim Comparator
Furnace-mounted whole-house humidifiers all publish a "gallons per day" output and an "up to X square feet" coverage claim. We fetched three brands' own current product pages directly and compared what each one actually states — including two products from the same brand, at the same stated output, under the same named test condition.
A square-footage row that states cubic feet: Honeywell
Honeywell's own HE280 page states, in its marketing copy, "coverage up to 4000 sq. ft." But its own specifications table carries a row labelled "Building Square Footage (Max)" whose stated value is "Up to 18,000 cubic feet" — a volume figure under a square-footage label, on Honeywell's own page. That's not a one-off: Honeywell's own HE360 page (now discontinued, so not shown as a row above) carries the identical mismatch — "Building Square Footage (Max): Up to 19,000 cubic feet" next to marketing copy stating "homes up to 4500 sq. ft." Two products, the same row label, the same wrong unit both times.
What this does not do
- It does not apply AHRI Guideline F's own tight/average/loose construction adjustment — that standard's own text returned an access error on every direct-fetch attempt this session, so no figure from it is used here. A home that isn't "tightly constructed," the basis every brand's own claim above uses, may need more capacity than shown.
- It does not convert between gallons-per-day and square feet — no brand's own page states a formula for that conversion, so none is invented here. GPD is shown for context only.
- It compares one representative current model per brand (two for GeneralAire, to show the same-brand gap directly), not every humidifier each brand sells.