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Head-to-head · Best Window Fans

Bionaire BW2300-N Twin Window Fan vs Vornado Transom Window Fan

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

Bionaire BW2300-N Twin Window Fan comes out ahead by a clear margin (4.0 vs 3.7). Bionaire BW2300-N Twin Window Fan is best for: people who want a quiet twin window fan with a precise thermostat and a remote for a bedroom or office. Read the strengths below before deciding.

Bionaire BW2300-N Twin Window Fan
Higher ratedRanked #1 in Best Window Fans
Bionaire BW2300-N Twin Window Fan
1 source$60as of Oct 17

The Bionaire twin window fan pairs two 8.5-inch reversible blades with a digital programmable thermostat, three speeds and a remote, and fits windows 24 to 36 inches wide. TechGearLab named it its best overall window fan with a score of 70/100, praising single-degree thermostat control and low noise at full speed, though it measured only middling air movement. The Spruce also made it its best overall pick for its remote and independently reversible fans, while Reviewed called it its best value but found its wind speeds on the lower side of average. It suits bedrooms and home offices where quiet, automatic temperature control matters; anyone who wants strong whole-room circulation should look at a larger fan.

Strengths
  • — Thermostat sets in single-degree steps, with clear, intuitive controls
  • — Quiet at full speed: TechGearLab measured 50.1 dBA, well below most rivals
  • — Each of the twin fans can be set to intake or exhaust independently
Watch-outs
  • — Modest airflow: Reviewed's wind-speed results sat on the lower side of average
  • — Starts on high, beeps at every button press, and limits display dimming
  • — Remote needs a clear line of sight to the fan's sensor
$60 · Check Price on AmazonFull review →
Vornado Transom Window Fan
Ranked #4 in Best Window Fans
Vornado Transom Window Fan
2 sources$99.94as of Oct 16

The Vornado Transom swaps the usual twin blades for one long fan in a low, 8-inch-tall case that fits windows 26 to 40 inches wide. Wirecutter calls it the best window fan it has tested, measuring about 10 to 11 mph of air speed at about half the power draw of other models; TechGearLab found it the quietest fan in its test but measured relatively poor air movement in CFM. Both outlets note it is hard to clean.

Strengths
  • — Quietest fan in TechGearLab's noise test at 48.4 dBA; Wirecutter measured about 49 decibels on high
  • — Low-profile case fits windows up to 40 inches wide, with foam pads to improve the seal, per Wirecutter
  • — Remote control, and the fan closes when off to stop air exchange, per TechGearLab
Watch-outs
  • — TechGearLab's CFM readings showed relatively poor air movement
$99.94 · Check Price on AmazonFull review →

How they stack up

Bionaire BW2300-N Twin Window Fan

TechGearLab measured the same 754.5 CFM airflow from the Bionaire and the Amazon Basics Twin Window Fan (9-inch), but the Bionaire adds a thermostat, a remote and push-button exhaust, where the Amazon Basics must be turned around in the window. The Vornado Transom measured quieter in the same tests but moved far less air (248.3 CFM), and The Spruce notes the Genesis A1WINDOWFAN Twin offers temperature settings without a remote.

Vornado Transom Window Fan

It uses a single long fan instead of the twin blades of the Bionaire BWF0910AR, Genesis A1WINDOWFAN, Comfort Zone CZ319WT and Holmes HAWF2043. Wirecutter measured nearly twice the air speed of the Genesis and Holmes fans it tested, while TechGearLab's CFM readings put its air movement below the other window fans it tested.

Specs side-by-side

SpecBionaire BW2300-N Twin Window FanVornado Transom Window Fan
Dimensions12.8 x 24 x 4 in5.73"D x 26"W x 7.16"H
Window Width24 to 36 in—
BladesTwin 8.5-inch, reversible—
Fan Speeds3—
ControlsDigital panel with display, remote—
ThermostatProgrammable—
PowerStandard 120V outlet—
Width Range—26 to 40 inches
Height—8 inches (TechGearLab)
Fan Design—Single long fan
Remote—Yes
Power Draw—26 W low, 29 W high (Wirecutter measurement)
Noise—48.4 dBA (TechGearLab)
Warranty—5 years (per Wirecutter)
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