Lasko 42" WhisperForce DC Tower Fan (TDC427)
Best for: Buyers who want a DC tower fan from a long-established brand
24 dBA and 12 speeds from the biggest name in American fans — the safe pick if you would rather buy a brand your parents owned.
Lasko has been making fans in the US since 1906, and the WhisperForce line is their answer to the DC-motor wave that brands like DREO led. The trade is the usual one: a DC motor draws far less power and runs quieter at low speed than the AC motors Lasko built its name on — the company's own figure is 57% less energy than their T42215 — and it gives you 12 speed steps instead of the traditional three. At 24 dBA it sits between DREO's 20 dB 518 and the 28 dB 117S. Airflow tops out at 25 ft/s with 90° oscillation.
Where to buy
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Should you buy it?
What we like
- 24 dBA with 12 speed steps
- DC motor — 57% less energy than Lasko's own AC equivalent
- Established US brand with wide service and parts availability
- 90° oscillation and remote included
What to know before buying
- 25 ft/s is slightly below DREO's 28 ft/s at the same price
- 24 dBA is quiet but not the quietest in this comparison
- No app or voice control
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At a glance
How it scores
How our 8.4/10 breaks down — rated on the dimensions that matter most for bedroom fans, from published specifications and third-party test data, not the marketing.
Compare with alternatives
Quick verdicts for the bedroom fans most often considered alongside the Lasko 42" WhisperForce DC Tower Fan (TDC427).
Lasko 42" WhisperForce DC Tower Fan (TDC427) vs DREO Tower Fan 518
20 dB on its lowest speed with real airflow at the top — the rare fan that is quiet enough to sleep beside and strong enough to matter.
→ Bedrooms where the fan runs all night and must not be heard on low
DREO Tower Fan 518 review →Lasko 42" WhisperForce DC Tower Fan (TDC427) vs Lasko Pinnacle 40" DC Tower Fan (DST100)
32 ft/s and a 50-foot throw at 24 dBA, with a built-in night light — the most airflow here without giving up bedroom quiet.
→ Larger or hotter bedrooms that need real airflow overnight
Lasko Pinnacle 40" DC Tower Fan (DST100) review →Lasko 42" WhisperForce DC Tower Fan (TDC427) vs DREO Tower Fan 117S
892 CFM and 28 dB at the lower Dreo price — the value pick, and the one to buy if the fan is for a small or spare bedroom.
→ Small and spare bedrooms, or a second fan for the kids' room
DREO Tower Fan 117S review →Not sure which one is right for you?
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Frequently asked questions
WhisperForce vs DREO 518 — which is quieter?
On the published numbers the DREO 518 is quieter: 20 dB against Lasko's 24 dBA. Both figures come from the manufacturers rather than an independent lab, and dB and dBA are not strictly interchangeable, so treat the gap as indicative rather than exact. Both are quiet enough for a bedroom.
Is a DC motor worth paying for in a fan?
In a bedroom, yes. DC motors run meaningfully quieter at low speed and use far less power — Lasko cites 57% less than their own AC model. The practical gain is that the lowest speed on a DC fan is usable all night, where the lowest speed on a cheap AC fan is often still audible.
Does it have a timer?
Lasko's DC tower fans in this line include a timer and remote. Check the specific listing before buying, as Lasko sells several 42-inch towers with different control sets and near-identical model numbers.