Lasko Pinnacle DST100 Review: Quiet 40-Inch DC Tower Fan
Lasko's flagship DC tower: WhisperForce airflow up to 32 ft/s, a 24 dBA low setting, 12 speeds with AirSense temperature sensing, a night light and a mesh filter.
By Daniel Brooks
Updated October 22, 2026
The Lasko Pinnacle DST100 is Lasko’s flagship DC tower fan. WhisperForce DC technology pushes up to 32 ft/s with a 50 ft air distance, yet Lasko rates it as low as 24 dBA on low speed, the quietest figure in its range. It sits near the top of our list of tower fans for bedrooms and offices, with a 4.1 out of 5 average from 317 ratings.
Our Verdict
The Pinnacle is the Lasko to buy if you want quiet and power in one fan. Twelve speeds give you fine steps between a whisper and a strong breeze, AirSense adjusts the speed to the room temperature in Auto mode, and the 24-hour timer, night light and mesh filter add everyday convenience.
It does not connect to Wi-Fi, so there is no app or voice control, and it costs more than Lasko’s classic towers. Its ratings average is also modest compared with the brand’s long-running models.
Lasko Pinnacle 40-Inch DC Tower Fan (DST100)
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Key Specifications
| Feature | Specification |
|---|---|
| Brand | Lasko |
| Model | DST100 |
| Type | DC motor oscillating tower fan |
| Height | 40.12 inches |
| Footprint | 13 x 13 inches |
| Airflow | Up to 32 ft/s, 450 CFM, 50 ft distance |
| Speeds and Modes | 12 speeds, 4 modes (Custom, Auto, Night, Nature) |
| Noise Level | 24 dBA low speed |
| Oscillation | 90 degrees |
| Timer | 24 hours |
| Power | 36 watts, DC motor |
| Extras | Night light, mesh filter, child lock |
| Controls | Remote, touch panel |
| Safety | Blue Plug fuse |
Airflow and Coverage
Lasko rates the Pinnacle at up to 32 ft/s with a 50 ft air distance, which is strong for a 40-inch tower. The specifications list 450 CFM, and 90 degree oscillation spreads that air across a bedroom, living room or home office.
That reach means it can sit at the edge of a room and still reach the bed or sofa. In a smaller room you will rarely need the top speeds.
Noise and Sleep
The headline figure is 24 dBA on low, low enough for nurseries, conference calls and sleep. Because the DC motor offers 12 steps, you can climb gradually without a sudden jump in noise.
Night mode lowers the airflow for sleep, and the downward-facing night light helps with late-night trips without lighting the whole room. If you prefer total darkness, use the controls to turn the lighting off.
AirSense and Modes
AirSense senses the ambient room temperature and adjusts the fan speed automatically in Auto mode. As the room cools in the evening, the fan slows down, and as it warms up in the afternoon, it speeds up.
Custom mode holds a fixed speed, and Nature mode varies the airflow to feel more like an outdoor breeze. The touch panel and the remote control all four modes, the timer and oscillation.
Cleaning and Safety
A removable mesh filter captures pet hair, dust and lint before they reach the internal components, which keeps the fan quieter over time. Rinse or vacuum it every few weeks.
The child lock prevents little hands from changing settings, the EZGrip handle makes the fan easy to move, and Lasko’s Blue Plug fuse cuts power if it detects an electrical fault. The remote takes a CR2025 battery, which is included.
Energy Use
The specifications list 36 watts, a fraction of a window air conditioner, and the DC motor uses even less on its lower settings. Running it with your air conditioner lets you raise the thermostat and still feel comfortable.
How It Compares
The Pinnacle’s closest rival is the Lasko Ascend OST105, which shares AirSense, a mesh filter and a 12-hour timer in a slimmer 36-inch frame. The Ascend is rated at 29 dBA with 4 speeds, while the Pinnacle goes quieter, stronger and finer with 12 speeds, so it is the better pick for a light sleeper.
Against DREO’s quiet DC towers, the Pinnacle matches the low noise and adds a night light and a filter, but DREO’s smart models offer app and voice control that Lasko does not.
Pros and Cons
| Pros | Cons |
|---|---|
| 24 dBA low setting | No Wi-Fi or app |
| Up to 32 ft/s airflow | Pricier than classic Laskos |
| 12 speeds and AirSense auto mode | Modest ratings average so far |
| Night light and mesh filter | Night light may bother some |
| 24-hour timer | Only 90 degree sweep |
Who Should Buy It
| Who Should Buy It? | Who Should Look Elsewhere? |
|---|---|
| Light sleepers | Smart home users who want voice control |
| Home offices with frequent calls | Shoppers on a tight budget |
| Pet owners | Rooms that need 120 degree coverage |
| Buyers who want Lasko support | People who want an app schedule |
For more options, see our picks for the best quiet tower fans and the best Lasko tower fans.
Final Verdict
The Lasko Pinnacle DST100 combines a 24 dBA low setting with genuinely strong airflow, 12 speeds and smart temperature sensing. It is the best quiet tower in Lasko’s range if you can live without an app. You can check the current price and details for the Lasko Pinnacle 40-Inch DC Tower Fan (DST100).
Frequently Asked Questions
How quiet is the Lasko Pinnacle DST100?
Lasko rates it as low as 24 dBA on low speed.
Does the Pinnacle have Wi-Fi?
No. AirSense uses a built-in temperature sensor, and control comes from the remote and touch panel.
What is the difference between the DST100 and DST105?
They are the same Pinnacle fan in different colors, black for the DST100 and white for the DST105.
How long is the timer?
The timer runs up to 24 hours.
Does it have a filter?
Yes. A removable mesh filter captures pet hair, dust and lint.
Does the Lasko Pinnacle come with remote batteries?
Yes. The remote uses a 3V CR2025 battery, which is included.
About the author
Daniel Brooks is a home cooling editor at WikiCooling, covering window, portable, through-the-wall and mini-split air conditioners, fans, and dehumidifiers. He researches cooling capacity, energy efficiency, noise levels, installation requirements, and buyer feedback to help homeowners choose the right unit for their room size, climate, and budget.