How to Use a Fan Heater Combo for Year-Round Comfort
By Lasko: #1 Fan & Heater Brand in the USA | Fans, Heaters, Air | Published: 2026-10-20
Category: Buying Guides
Learn how to switch between cooling and heating modes on a Lasko DUO Comfort tower fan heater combo, plus tips to maximize comfort and save energy all year.
Quick answer
Use the Lasko DUO Comfort fan heater combo as a standalone fan in warm months and a ceramic space heater when it's cold—switching modes takes one button press, and the Auto Eco setting helps maintain your preferred temperature efficiently.
Why a fan heater combo works for every season
A fan heater combo like the Lasko DUO Comfort replaces two separate appliances with one slim tower. In summer, you get a 4-speed tower fan that oscillates to circulate air across the room. In winter, the built-in 1500-watt ceramic heater delivers 5,118 BTUs of warmth—enough for large rooms—without taking up extra floor space.
The main trade-off is that you can't run both fan and heater simultaneously. The unit is designed to operate in either cooling or heating mode, so you need to switch modes when the season changes. The Auto Eco thermostat helps by cycling the heater on and off to maintain your set temperature, which saves energy compared to running the heater at full power constantly.
Choosing the right model for your room
All Lasko DUO Comfort models share the same core features: a 1500-watt ceramic heater, multiple fan speeds, oscillation, a remote, and safety features like tip-over switch and overheat protection. The main differences are height, motor type, and price.
The 42-inch model (product ID 2552498) offers the tallest tower and includes Auto Eco, making it a good fit for larger living spaces where you want the heater or fan to reach farther. The 38-inch models (product IDs 2552497 and 2552499) are slightly shorter and lighter, with a carry handle for easy portability between rooms. The DC motor version (2552499) runs more quietly and efficiently, which matters if you plan to use the fan overnight in a bedroom.
How to use your Lasko DUO Comfort fan heater combo year-round
- Switch between fan and heater modes: Press the Mode button on the unit or remote until the display shows the fan icon (for cooling) or the heat icon (for warming). The unit will not blow cold air if the heater mode is on, and vice versa. Common mistake: leaving the heater mode on in summer. The fan will still spin but won't cool—always check the display icon before expecting cool air.
- Set the fan speed or heat level: Use the Speed/Heat button to cycle through 4 fan speeds (low, medium, high, turbo) in fan mode, or 3 heat settings (low, high, auto) in heater mode. Auto Eco in heater mode lets the thermostat decide when to turn the heater on and off to maintain your set temperature. Auto Eco saves energy but may not satisfy a very cold room quickly. For fast warmth, start on high heat, then switch to Auto Eco once the room feels comfortable.
- Adjust oscillation for even air distribution: Press the Oscillation button to enable wide-angle oscillation. This moves the fan or heater output across the room rather than blowing directly at one spot. Oscillation works in both fan and heater modes. Without oscillation, the unit only cools or warms the area directly in front of it. Always enable oscillation in larger rooms for consistent comfort.
- Use the timer for scheduled operation: Press the Timer button to set an auto shut-off from 1 to 8 hours. This is useful for running the fan while you sleep or the heater while you're at work, then having it turn off automatically. A common oversight: setting the timer but not adjusting the temperature. If the timer is short and the room is cold, the heater may turn off before the room warms up. Set the timer for at least 2 hours during initial warm-up.
- Clean the filters seasonally: The unit has easy-clean filters accessible from the back or bottom (varies by model). Remove the filter, rinse it under lukewarm water, let it dry completely, and reinstall. Do this at the start of each season—before using the fan in spring and before using the heater in fall. Dirty filters reduce airflow and make the heater work harder, increasing energy bills. A quick rinse every 3 months keeps performance consistent.
Product facts
- Lasko DUO Comfort 42" Tower Fan and Ceramic Space Heater: Oscillating, 3 Heat Settings, 4 Fan Speeds, Remote, Timer, Tip-Over Switch, White: 42-inch tower with 4 fan speeds, 3 heat settings, and Auto Eco thermostat. The taller tower and Auto Eco make it ideal for living rooms or open-plan spaces where you want consistent temperature without manual adjustments.
Lasko DUO Comfort 42" Tower Fan and Ceramic Space Heater: Oscillating, 3 Heat Settings, 4 Fan Speeds, Remote, Timer, Tip-Over Switch, White - Lasko DUO Comfort 38" Tower Fan and Ceramic Space Heater: Oscillating, 3 Heat Settings, 4 Fan Speeds, Remote, Timer, Tip-Over Switch, White: 38-inch tower with 1500-watt ceramic heater, 4 fan speeds, and 8-hour timer. The compact size and carry handle let you move it from bedroom to home office easily, and the timer helps you avoid running it all night.
Lasko DUO Comfort 38" Tower Fan and Ceramic Space Heater: Oscillating, 3 Heat Settings, 4 Fan Speeds, Remote, Timer, Tip-Over Switch, White - Lasko DUO Comfort 38" DC Tower Fan and Ceramic Space Heater: Oscillating, 3 Heat Settings, 4 Fan Speeds, Remote, Timer, Tip-Over Switch: 38-inch DC motor tower with WhisperForce technology for quieter operation. The DC motor uses less electricity and produces less noise, so it's a better choice for bedrooms or nurseries where silence matters.
