As its name suggests, Dyson Pure Hot + Cool Formaldehyde is an air purifier, heater and cooling ... That's not so useful in summer perhaps but in a cold room in winter, it's very nice indeed.

This makes air purifiers more essential than ever — they can filter out harmful particles from the air we breathe around the ...

If you have an air purifier, you've probably noticed a cold breeze coming from the machine. As these products are designed to ...