Dyson's Hot+Cool HF1 combines heater, fan, and smart controls

The Hot+Cool HF1 is Dyson’s 2-in-1 smart appliance, providing heating in winter and cooling in summer from a single $499 unit. The device combines Dyson’s bladeless design with quiet operation and smart controls, positioning it as a year-round replacement for a separate space heater and fan.

A three-month test of the unit — provided by Dyson, which will get it back once testing wraps — found its smart features to be the standout, more so than simply consolidating two appliances into one. Users can control the HF1 through onboard controls, the included remote, or the MyDyson smartphone app, which allows turning the unit on or off remotely — even from another room — as well as setting timers, adjusting oscillation, and creating schedules for automatic operation.

The HF1 is designed to be quiet enough for bedrooms and home offices. In Sleep mode, it runs at just 26 decibels and automatically dims its display. An adjustable tilt directs airflow where needed, and the unit can oscillate at 15, 40, or 70 degrees for wider coverage. An intelligent thermostat continuously monitors the room and adjusts heating output to reach and hold a chosen temperature — though the cooling mode functions as a high-powered fan rather than an air conditioner, circulating air instead of lowering the room’s actual temperature.

The bladeless design simplifies maintenance: a quick wipe with a cloth removes dust, without the grille- or blade-cleaning that traditional fans and heaters require. It also removes exposed blades that could pose a hazard around pets and children, though the metal casing near the front can get slightly hot to the touch during heating mode. As an added safety measure, the unit automatically shuts off if it’s tipped over.

At just under six pounds and 23 inches tall, the HF1 is compact and light enough to move between rooms without taking up much space or looking out of place. Despite its premium price relative to a standard space heater or fan, the combination of heating, cooling, smart features, quiet operation, and easy maintenance makes the case for it as a single year-round appliance.

Why it matters

The HF1 shows how appliance makers are using smartphone connectivity and multi-mode hardware to consolidate previously separate home devices, a pattern likely to spread as smart-home features become standard even in single-purpose categories like heating and cooling.