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Dyson launched a big upgrade to its air purifier earlier this year with the Dyson Pure Cool.

The Watch Russian Mom (2016) Korean movieUK-based company is now launching a new version called the the Pure Hot+Cool. As you might suspect, it's the same general idea, only this time the purifier can heat the air as well as cool it. It's a costly three in one product, though, with a $649.99 price tag — a full $100 more than the Pure Cool.

The Pure Hot+Cool sticks with an elongated oval design similar to previous fans. The cylindrical base contains the filters. The oval on top of the base pushes the air outward via Dyson's Air Multiplier tech (used on all the company's fans, heaters, and air purifiers). It can oscillate side to side, and can also change to a backward-airflow mode so the air blows from the sides instead of the front.

In heating mode, you can set a desired temperature on the Hot+Cool or via the companion app or the small circular display on the front. Unlike the Dyson Hot fans, when the desired room temperature is achieved, the fan doesn't stop; it still blows to purify the air, but the heating elements are switched off.

Cooling mode is what it sounds like and is exactly how the Pure Cool works now.

Dyson's purification tech uses lasers (as well as other sensors) to measure and identify particles that are floating around. It also monitors the humidity and temperature to know what particles are in the air, including pollen, NO2, formaldehyde, benzene, and other bacteria. A HEPA filter will capture those particles as they're sucked in.

With the Dyson app, you can control and monitor the purifier's performance, and you can check your air quality in real time. You can also look at the air quality historically, going back to when you first switched it on. The app also tells you when to change the filters.