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Vornado TRANSOM Window Air Circulator: What to Know
Unlike the other four fans in this guide, the TRANSOM does not use two visible spinning blades. Vornado built it around a single enclosed cross-flow air chamber that reverses electronically between drawing outside air in and exhausting stale indoor air out, controlled with 4 speeds and an included remote. Vornado's own product page describes it as about half the height of a conventional window fan, sized with a Soft-fit System for double-hung, single-hung, and horizontal slider windows between 26 and 40 inches wide, and it needs roughly 10 inches of vertical clearance plus a power outlet within 8 feet.
Noise is where the TRANSOM stands out most, and it's one of the few specs where independent sources actually agree: TechGearLab's lab testing measured it at 48.4 dB, and Bob Vila's separate test put it between 40 dB on its lowest speed and 46 dB on its highest. Both were the quietest or among the quietest results in their respective roundups, and Bob Vila specifically named it their "Best Quiet" window fan.
Airflow is a different story, and it's a real inconsistency worth flagging rather than glossing over. Acme Tools' own listing cites 185 CFM, while a Target listing for the same base model states roughly 1,276 CFM. Independent lab tests split the difference in an unhelpful way: TechGearLab measured 248.3 CFM, while Bob Vila's separate test recorded 1,315 CFM for the same product. No single authoritative number could be found, so the spread is reported here rather than picking one.
On thermostat features, the base TRANSOM model Vornado describes on its own site lists 4 manual speeds and remote control but no stated thermostat mode; a smart, Alexa-enabled "Transom AE" variant adds voice control and automatic temperature control at a higher price. At least one retail listing title for the base model references "Digital Temp Control," which does not match Vornado's own spec sheet for the standard TRANSOM, so buyers who specifically want auto-thermostat behavior should verify which version they're ordering.
Key Listed Features
Electronically reversible single-chamber airflow (intake or exhaust) instead of two independently controlled blades
4-speed remote control
Soft-fit, weather-resistant frame sized for 26 to 40 inch wide double-hung, single-hung, or slider windows
About half the height of a conventional twin-blade window fan, per Vornado's own product description
