
Coway Airmega 150
The cheapest to run, with an H13 filter. Good for a bedroom or nursery.

Levoit Core 300S
The cheapest with an app, so you can schedule it and turn the lights off.

Levoit Core 400S
For a big main bedroom, or if you want it on a low, quiet speed while still keeping up on smoky nights.
What matters in a bedroom
- Size it one step up. A bigger unit on low is quieter than a small one on high.
- Sleep mode. Look for a low-noise setting with the display lights off.
- Running cost. It'll run eight hours a night, so filter prices matter. Compare costs.
- Door shut. It cleans the room it's in.
Questions
Is it safe to run all night?
Yes. Leave ioniser or PlasmaWave features off, and give it some space from bedding and curtains.
What about a stuffy bedroom?
A purifier won't fix that. Stuffiness is carbon dioxide, and only fresh air helps. Indoor air guide.