Translation guide
A hand dryer is an electric device that blows air to dry hands, commonly found in public restrooms. In Japanese, it is usually referred to by the specific product name or a descriptive phrase.
ハンドドライヤー
hand dryer
The learner wants to refer to the common electric hand dryer found in public restrooms.
The most common and widely understood term for an electric hand dryer. It is a loanword from English.
トイレにハンドドライヤーがありますか？
Is there a hand dryer in the restroom?
ハンドドライヤーが故障しています。
The hand dryer is out of order.
A specific brand name (Mitsubishi Electric) that has become a genericized trademark for high-speed hand dryers. Often used to refer to the type where you insert hands into a slot.
このトイレにはジェットタオルがついています。
This restroom is equipped with a Jet Towel.
A descriptive phrase meaning 'machine that dries hands'. It is understandable but not commonly used as a name; more likely to be used in explanations.
あの手を乾かす機械は音がうるさい。
That hand-drying machine is noisy.
In Japan, specific brand names like ジェットタオル (Jet Towel) are often used generically, similar to 'Kleenex' for tissues. If you are unsure, ハンドドライヤー is safe and universally understood.