Most people question if it is all right to leave their air purifiers on 24/7. In short, yes. It is perfectly safe to leave your air purifier working non-stop.
Air purifiers are designed to be safe for continuous operation. Equipped with certain safety measures such as timers and automatic shut-off functionalities, they can work without any safety or effectiveness issues for a long duration.
However, having the air purifier working day in and day out may not always be necessary. The need for constant operation depends on the conditions of the air in your home, the advice of the manufacturer and your own comfort level.
If you suffer from allergies or asthma, it could be advantageous to keep the air purifier on all the time. This will make sure your home's air stays clean and allergen-free all the time.
If your home’s air is predominantly clean, it may not be necessary to have the air purifier running 24/7. Running it for a few hours each day could be sufficient.
Keeping your air purifier on 24/7 also has cost implications. While the operation cost of most air purifiers is quite small, keeping them on continuously will still add to your electricity more info bill.
To sum up, it is indeed safe to run your air purifier all day and night, whether you should do so depends on your personal circumstances and needs. Consult the manufacturer's guidelines and consider your indoor air quality and personal comfort when making your decision.