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Where to Place Your Air Purifier (And Where Not To)
Where you put your air purifier matters almost as much as which one you buy. The same purifier can clean a room well or barely make a dent, depending on whether it can pull in air freely. Here’s where to put yours, the spots to avoid, and how to set it up room by room.
The quick answer
Put your air purifier in the room you spend the most time in, close to where you sit or sleep, with open space around it. Keep windows and doors closed while it runs.
| Do | Don’t |
|---|---|
| Put it in the room you use most | Run it in an empty room |
| Leave space on all sides | Push it into a corner or behind furniture |
| Place it near where you sit or sleep | Hide it behind curtains or under a table |
| Keep it near the source of dust, pet hair or smoke | Put it right beside the stove or in the bathroom |
| Close windows and doors while it runs | Run it with the windows wide open |
Why placement matters
An air purifier only cleans the air that passes through it. Its fan pulls room air in, sends it through the filters, and pushes clean air back out. If something blocks the air coming in or going out, it cleans less air, even on its highest setting.
Good placement does three things:
- Lets it breathe: air can flow freely into the intake and out of the outlet.
- Keeps clean air where you are: you breathe the cleaned air first, not the far corner of the room.
- Catches pollution early: it pulls in dust, dander or smoke before they spread around the room.
The best spots
- In the room you use most. For most people, that’s the bedroom at night and the living room by day.
- Close to you, but not right on you. A short distance from your bed or sofa works well.
- With open space all around. Keep it clear of walls, furniture and curtains.
- Somewhere central or along an open wall. Air circulates more evenly than when it’s wedged into a corner.
- Near the source of the problem. Put it near where your pet sleeps, near the main door if dust comes in from outside, or just outside the kitchen if cooking smoke is the issue.
Spots to avoid
- Corners and tight gaps: walls on two sides block airflow, so the purifier pulls in the same air again and again.
- Behind curtains, sofas or under tables: fabric and furniture block the intake and outlet.
- Right next to the stove: heat, steam and grease can damage the filter. Place it just outside the kitchen instead.
- Bathrooms and wet areas: moisture can damage the filter and may lead to a musty smell.
- Directly under an aircon unit: condensation can drip onto it.
- Beside an open window: it ends up cleaning outdoor air that keeps flowing in.
- In direct sunlight or by a heat source: heat can affect the unit over time.
Room by room
Bedroom The bedroom is often the best place for an air purifier, because it’s where you spend the most hours in one stretch. Put it a short distance from the bed, close the door, and switch it on a while before bed so the air is already clean when you get in. Use a quieter setting overnight.
Living room Living rooms are usually bigger and often open-plan, so placement matters more here. Put the purifier near where everyone sits, out in the open, rather than tucked beside the TV console. If your living room opens onto the dining area or kitchen, you may need a purifier sized for the whole space. Browse our Air Purifiers to find one that fits.
Near the kitchen Keep the purifier just outside the kitchen, not beside the stove. It will catch smoke drifting into the rest of the home. Run your kitchen hood while you cook, and let the purifier handle what escapes.
Kids’ rooms and nurseries Place it where it can’t be easily knocked over, with the cord tucked away and out of reach.
Homes with pets Put it near where your pet sleeps or spends the most time. Pet hair clogs the pre-filter faster, so check it more often.
During haze season
- Close windows and doors. Otherwise haze keeps flowing in and the purifier never catches up.
- Focus on one room. If you have one purifier, run it in the bedroom, and keep that door shut.
- Run it before you need it. Switch it on before you go to bed, not when you’re already in bed.
- Check your filter afterwards. Long haze spells wear filters out faster.
One purifier, several rooms?
You can move a purifier from room to room. Run it in the living room in the day, then carry it into the bedroom in the evening, ideally before you go to bed. For homes where several rooms are used at the same time, a purifier for each main room works better than one moving around.
How to tell it’s in the right spot
- Airflow feels strong at the outlet, with nothing blocking it.
- The room feels fresher within a short while of switching it on.
- If your purifier shows an air quality reading, it should improve steadily after you switch it on, rather than staying flat.
- The fan isn’t constantly on high, unless the air outside is bad.
If it’s struggling, try moving it out of a corner, closing the windows, or checking whether the filter is due.
FAQ
Should my air purifier be on the floor or on a table? The floor is fine for most purifiers, as long as there’s open space around it. Keep it stable and out of the way, where it won’t be knocked over.
Can I put it near the aircon? Yes, aircon airflow can help move air around the room. Just don’t place it directly under the unit, where condensation can drip on it.
Should I keep the door closed? Yes. A closed room lets the purifier clean the same air repeatedly, instead of trying to clean the whole home at once.
Can I put it in the bathroom? No. Moisture can damage the filter and may lead to a musty smell.
Where to buy
Find the right air purifier for your space on our Air Purifiers page. Already have one? Keep a spare filter at home, available here.