Cleaner air room: a household wildfire-smoke plan
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If it is safe to remain home, choose a room that fits your household, close doors and windows without blocking escape, keep it cool and use a suitable air cleaner. Avoid producing smoke or particles indoors. Filtration does not make a home safe during a fire, dangerous heat or a chemical release.
Trusted references.
Published references provide deeper context. The practical steps are below; outside references need a connection.
Use this page to build and practice a household plan before disruption. Match decisions to your actual people, equipment and location; this page is not a live alert.
On this page
Build your plan.
- 01
Pick a workable room
Use a room everyone can occupy comfortably. Keep exits usable and plan access to a bathroom.
- 02
Limit smoke entry
Close exterior openings. If the air conditioner has an outside-air option, use recirculation as its instructions allow.
- 03
Use appropriate filtration
Choose a CARB-certified portable cleaner with a tobacco-smoke CADR at least two-thirds of the room area in square feet. Follow its instructions and operate continuously during smoke.
- 04
Reduce indoor pollution
Avoid smoking, candles, sprays and high-heat cooking. Clean settled dust with a damp cloth.
An equipment plan before shopping
Editorial checklist: measure the room, check available outlets, record the cleaner model and filter type, find replacement filters and choose where people will sit and sleep. Photograph the filter label for later shopping. Avoid relying on a device nobody has learned to operate.
Prepare for a power interruption
Write down a checked alternate location where cleaner air and a tolerable temperature may be available. Determine the transport and care needs before smoke arrives. A closed room without working cooling may become unsuitable; review both heat and smoke rather than treating one as the only risk.
PLAN AROUND WHAT YOU HAVE
If help is unavailable.
When filtration or cooling is unavailable, avoid adding indoor particles and check whether a safer alternate location can be reached. Do not remain in dangerous heat simply to keep windows closed.
People & practical needs.
Plan around people with heart or lung conditions, children, older adults and pregnant people. Keep their usual care instructions and medicines accessible. Ask their clinician about a personal smoke plan before the season.
Keep essentials within reach
Air-cleaner instructions, suitable replacement filter, drinking water, contacts and the alternate-location plan.
Next steps.
Practice setting up the room and replacing the filter. Reassess when outside conditions improve; the linked EPA guidance explains when to air out the room.
The room becomes too hot?
Use the safer temperature and relocation plan.
A fire threatens the building?
Use the evacuation plan rather than relying on filtration.
Common questions.
Is a cleaner air room a shelter for every hazard?
No. This plan addresses wildfire smoke while staying home is otherwise safe. Fire, excessive heat and chemical releases require different decisions.
Watch for.
Do not seal anyone inside or block emergency escape. Ordinary particle filtration does not remove every harmful gas. Follow evacuation instructions for nearby fire.
Sources & context.
Civilian guidance using the linked U.S. reference. Local conditions and services differ. Household planning examples are Osprey Zero editorial suggestions; this is not a live alert or specialist certification.
Osprey Zero combines source-based protective guidance with practical household planning. References provide context, not a promise of assistance. Some standards are U.S.-based; local risks, laws and services differ.
Content updated 2026-10-03. Sources checked 2026-10-03. Next editorial review due 2027-04-03. Editorially reviewed against linked references; not independently certified by a subject-matter expert. Verify changing conditions through sources safe for you to contact.