Landlord Wildfire Smoke Responsibility: Rights & How to Ask
November 12, 2026
Does Your Landlord Have to Do Anything About Wildfire Smoke?
In most states, no. Most habitability laws don’t require landlords to provide air filters or purifiers for smoke. California requires smoke and ash cleanup after a declared disaster, and Oregon limits bans on portable air conditioners.
The most useful thing to get from your landlord is your filter size. With it, you can order MERV 13 today and act when the AQI hits 100.
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When wildfire smoke seeps into a rental, most renters want to know whether the landlord has to act. The honest answer depends on where you live and what your lease says, and a firm legal answer takes longer than the smoke lasts. Filterbuy makes air filters, so we wrote this guide for that gap.
TL;DR
As of November 2026, Filterbuy's review of state and federal rules found that most habitability laws don't require landlords to provide air filters or purifiers for wildfire smoke. California does require smoke and ash cleanup after a declared disaster, and Oregon protects a renter's right to a portable air conditioner. Send a dated written request for your filter size. At AQI 100 or higher, use a MERV 13 filter, set the fan to On, and run a HEPA air cleaner in each occupied room.
Key Takeaways
Filterbuy found no federal rule requiring landlords to supply filters or purifiers for smoke.
California Civil Code Section 1941.8 makes landlords clean up smoke and ash after a declared disaster.
Oregon SB 1536 limits landlord bans on portable air conditioners.
The filter size is the most useful thing to get from your landlord.
Filterbuy's action line is AQI 100, and only the filter swap may need landlord approval.
Is Your Landlord Legally Required to Do Anything About Wildfire Smoke?
In most states, no. Landlords must keep a rental livable under the implied warranty of habitability, but those laws focus on repairs and basic services and rarely mention smoke. The Environmental Law Institute's 2024 review of state smoke policies reached a similar conclusion. Two states come closest.
California: Landlords Must Clean Up Smoke After a Declared Disaster
California SB 610, signed in October 2025, added Civil Code Section 1941.8. When a disaster damages a rental and a state of emergency has been declared, the landlord must mitigate smoke, smoke residue, smoke odor, and ash. According to a fact sheet on SB 610 from the Legal Aid Foundation of Los Angeles, landlords must also follow government cleaning protocols. The law doesn't mention air filters. Track conditions on the California air quality map.
Oregon: Renters Can Install Portable Cooling Devices
Oregon SB 1536, limits when landlords can stop tenants from using portable air conditioners. Under Oregon Health Authority guidance on tenant cooling rights, a landlord can restrict a device only for listed reasons, such as code violations. Cooling lets you keep windows shut through hot, smoky days.
This guide is general information, not legal advice.
Who Is Responsible for the Air Filter in a Rental?
Your lease decides who changes the HVAC air filter. Some leases put routine changes on the tenant, and others leave HVAC work to the landlord. If yours doesn't say, ask in writing.
For a filter manufacturer like Filterbuy, the filter size is the number that matters most. The printed size is nominal, and the filter itself is a little smaller. A Filterbuy 20x25x1 comes off our line at 19.50 x 24.50 x 0.75 inches, undercut on purpose so it slides in without binding. Order by the printed size, or choose custom air filters for odd-sized slots.
Switching to MERV 13 takes the usual fit check: match the size and confirm it in the system manual.
What Can You Do Tonight While You Wait?
Start with official guidance. Check AirNow's AQI basics and follow your local air agency, especially if officials tell you to stay indoors or leave.
EPA's guide to creating a cleaner air room at home recommends an HVAC filter rated MERV 13 or higher, plus a portable air cleaner with a smoke CADR of at least two-thirds of the room's square footage that produces little or no ozone.
Filterbuy sets its own action line at AQI 100. At 100 or higher, take these four steps in order:
Put a MERV 13 filter in the HVAC system, the one step that may need your landlord's OK.
Set the thermostat fan to On, since Auto filters only while the system heats or cools.
Run a HEPA air cleaner in each occupied room, bedrooms first.
Close up the home. Shut windows, doors, and any outdoor-air intake, or set it to recirculate during smoke, and skip candles, frying, smoking, and non-HEPA vacuuming.
MERV 13 treats the whole home, and a portable HEPA cleaner treats one room harder than the central system can. HEPA belongs in portable units, never in a furnace slot. A pleated filter captures smoke particles, not the gases behind smoke odor.
Check the HVAC filter during a smoke event and replace it when it looks dirty, which can be well before its normal interval. Keep a spare on hand, and watch the live air quality index map for changes.
Wildfire Smoke Action Table For Renters
AQI 100 is Filterbuy's action line. EPA's Unhealthy for Sensitive Groups category starts at 101.
No Central Air or Ductwork? Start With a Portable Air Purifier
Without ductwork, portable HEPA air cleaners in each occupied room are your primary defense. If you can afford only one, put it in the bedroom, where you spend the most hours, and set up a clean room for wildfire smoke.
Under EPA's two-thirds rule, a 12 by 15 foot bedroom (180 square feet) needs a smoke CADR of at least 120.
A DIY box fan cleaner built with a MERV 13 filter is a reasonable stopgap, not a replacement for a certified air cleaner. Use a box fan made since 2012 with a UL or ETL mark, and never leave it running unattended.
EPA advises against air cleaners that produce ozone, so skip ionizers and ozone generators.
How to Ask Your Landlord: A Letter You Can Send Today
Put your request in writing, date it, and include that day's AQI reading. Specific asks are easier to approve and to document than a general complaint. Keep a copy, plus photos of gaps letting smoke in.
Subject: Wildfire Smoke Request for [Address, Unit]
Dear [Landlord or Property Manager],
On [date], the AQI in [city or ZIP] reached [number], and smoke is entering my unit. I am requesting:
- The HVAC filter size, and your OK to use a MERV 13 filter during smoke events.
- Repair of gaps letting smoke in, such as [broken window seals].
- Less outdoor air from building ventilation during smoke events.
- Confirmation that I may use a portable air purifier or window air conditioner.
[Optional: I request a reasonable accommodation for a household member with a disability: (describe).]
Please reply in writing by [date]. Thank you.
[Your name] | [Phone or email] | [Date]
HUD's reasonable accommodation FAQ explains how disability requests work.
What if Your Landlord Says No or Doesn't Reply?
Get local advice before withholding rent, since skipping your state's procedure can risk your tenancy. Start here:
Call local code enforcement about broken windows or seals.
Contact a local legal aid office or tenant union.
In California, cite Civil Code Section 1941.8 if smoke residue, odor, or ash remains after a declared disaster.
A Word From Our Air Quality Writer
When smoke hits, the most useful thing a renter can get from a landlord is the filter size. With that one number, you can order the right MERV 13 filter that day and set up a clean room the same night.
Michelle Wan, Brand Manager and Air Quality Writer, Filterbuy
California Wildfire Smoke and Renting by the Numbers
44% of California households rent, compared with 35% elsewhere in the U.S. Source: California's Renters, Public Policy Institute of California
The January 2025 Eaton and Palisades fires destroyed 16,251 structures in Los Angeles County, months before SB 610 became law. Source: Key Facts About the Eaton and Palisades Fires
Californians logged about 2.7 billion person-days of wildfire smoke exposure in both 2020 and 2021, up from 168 million to 800 million a year in 2010 to 2014. Source: Indicators of Climate Change in California: Wildfire Smoke and Human Health
Frequently Asked Questions
Is My Landlord Required to Provide Air Filters?
Usually not. Most state laws don't require landlords to supply filters or purifiers for smoke. Your lease decides who buys the HVAC filter, so ask in writing for the size and your OK to use MERV 13.
Is Wildfire Smoke a Habitability Issue?
In California, it can be after a declared disaster leaves smoke residue, odor, or ash, under Civil Code Section 1941.8. Elsewhere, laws rarely mention smoke, but broken seals are repair issues.
Can I Withhold Rent Because of Wildfire Smoke?
Not without legal advice. Withholding rules vary by state, and a misstep can lead to eviction.
Can My Landlord Stop Me From Using an Air Purifier or Window AC?
A plug-in purifier doesn't alter the unit the way a window AC does, but check your lease for appliance rules. In Oregon, SB 1536 limits window unit bans.
How Do I File a Tenant Smoke Complaint?
Send your landlord a dated written request. If smoke keeps entering through damaged seals, contact local code enforcement.
Get the Right Filter Before the Next Smoke Event
Fire season is the time to get the filter in before smoke arrives. Filterbuy stocks more than 600 standard sizes and cuts custom sizes, so once you have your size, order MERV 13 air filters and a spare, with fast and free 2-day delivery to most US states.
Glossary
Air Quality Index (AQI): The U.S. EPA's 0 to 500 air pollution scale.
Clean Air Delivery Rate (CADR): An AHAM (Association of Home Appliance Manufacturers) rating of a portable air cleaner's filtered airflow.
HEPA: High-efficiency particulate air, a filter standard for portable air cleaners.
MERV: Minimum Efficiency Reporting Value, the ASHRAE 52.2 rating scale for HVAC filters. MERV 13 is not equivalent to HEPA.
PM2.5: Fine particles 2.5 micrometers or smaller, the main pollutant in wildfire smoke.