Dyson launches app-controlled Hot+Cool HF1 for year-round comfort

Dyson has put a £399.99 price on its Hot+Cool HF1 Rapid React, a bladeless heater-fan it says can deliver fast, precise whole-room heating in winter and powerful cooling in warmer months. The company is also billing it as its first heater-fan that can be controlled from a phone, with app and voice control through the MyDyson app.

The pitch is straightforward: replace two seasonal appliances with one premium unit. Dyson’s product pages call the device the Hot+Cool HF1 Rapid React and Remote Link Pre-heat heater and cooling fan, while retail listings add sleep mode for night-time comfort and a pre-heat feature for getting a room ready before anyone walks in.

The harder question is whether the HF1 saves households money as well as space. It almost certainly saves floor space if a bedroom or home office would otherwise hold a separate fan and portable heater. But the power draw tells a less flattering story. Telegraph testing found the unit could draw up to roughly 2,500W during full-power heating bursts, which puts it in the same class as a serious electric heater and limits any claim that the all-in-one format automatically means lower running costs.

Dyson is also leaning on performance claims that frame the HF1 as an upgrade to its older AM09. Electric Shop said Dyson claimed the new model is 20% faster at heating and 25% quieter than the AM09, alongside the app and voice controls. That sounds like an incremental refinement rather than a leap in engineering, which matters at a list price that sits well above many conventional heaters and desk fans sold separately.

Early reviews have leaned positive, though they also underline the price pressure. The Telegraph described the unit as “Fast, quiet and beautifully designed, the Dyson Hot+Cool HF1 delivers powerful heating and cooling at a price that might be hard to stomach.” Mumsnet’s March 26, 2026 review called it “A small but capable fan heater that’s earned its place in my draughty kitchen and home office, with genuinely useful smart features and a few minor quirks.” Best Buy’s product copy says it offers “fast, precise whole-room heating in winter and powerful cooling” and that sleep mode is “quiet as a whisper.”

For households weighing one premium appliance against two cheaper ones, the HF1’s case rests on convenience, not obvious energy savings.