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Four-in-one, three-in-one, and two-in-one space heaters from Dyson, Envion, Lasko, and PureHeat to warm you up at the beginning of winter.

> 4-in-1 space heater

Envion FS200 Four Seasons 4 in 1 Air Purifier, Heater, Fan & Humidifier

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The Envion FS200 is one of the machines that you can use to cope with various weather conditions throughout the year. The unit comes with a ceramic heater, which shuts off automatically when tipped over. A built-in true HEPA filter promises to screen out 99.97 percent of the tiny particles in the air.

The device offers three independent settings: a heater alone, a fan humidifier, and a heater humidifier. Some users found a hidden setting, saying that by turning the left knob to humidifier (water drops) and leaving the water tank empty, the humidifier belt will not turn. This gives you a fan-only mode that blows cool air.

> 3-in-1 space heater

1. Dyson Pure Hot+Cool HP04 purifying Heater + Fan: Heater, fan, and purifier

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With Dyson’s “Air Multiplier” technology, HP04 claims to projects over 77 gallons of purified air per second, so it warms up the room much more quickly. The 350-degree oscillation sends warm air in various directions and helps make the room evenly heated. 

HP04 uses a HEPA filtration system to capture 99.97% of microscopic allergens and pollutants as small as 0.3 microns. But HP04 goes an extra mile by combining an activated carbon filter to enhance its purifying function. The model also has a sensor to detect airborne particles automatically and reports air quality in the room through an LCD screen in real-time.

You can control HP04 in multiple ways through a cellphone app, Bluetooth, and Amazon Alexa, in addition to a remote control that can be magnetically attached to the machine.

2. PureHeat 3-in-1: Heater, humidifier, air purifier

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GreenTech Environmental’s PureHeat 3-1 heater uses photocatalytic oxidation to reverse air pollution in the room. Using ultraviolet light and titanium dioxide, photocatalysis is a chemical reaction that breaks down volatile organic compounds (VOCs), formaldehyde included, into harmless byproducts.

In addition to the air purifying function, the device also works as a humidifier and is suitable for dry months.

> 2-in-1 space heater

1. Dyson Hot+Cool AM09 Fan Heater

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Dyson’s AM09 can be used year-round. The machine has two settings: Jet focused mode and diffused mode. Jet mode provides long-range yet focused airflow for personal heating. Diffused mode circulates warm air quickly and without cold spots.

The fan heater also features “Air Multiplier” technology, making the room cool or warm quickly and evenly. With heating elements never exceeding 392 degrees Fahrenheit (200 degrees Celsius), the AM09 does not produce a burning smell when used as a heater. 

2. Lasko FH500 fan heater

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Lasko FH500 is also a fan heater that you can keep in the room for all four seasons. And it comes with an AutoEco automatic electronic thermostat, which allows you to heat the room using less energy. 

Unlike many heaters that offer only high or low settings, FH500 has a medium option. The device provides four speeds: high, medium, low, and super low when used as a fan in the summer heat.