Air Purifiers for Smoke
For woodburner smoke, winter haze and wildfire drift, a HEPA purifier is one of the most effective things you can do indoors. It captures the fine PM2.5 particles, which is the part that matters most for your health. Smell is a smaller win: carbon helps reduce it, but it won't fully clear it, and smoke soaked into walls and furniture is harder again.
- Captures fine smoke PM2.5
- No ioniser, no ozone
- Christchurch support
- Best value
Woodburner smoke tends to peak on still winter nights and lingers, so running overnight helps. The Sqair sits at 23 dB on low and the SA600 at just 16 dB, so you can run it higher through the worst of the smoke, then drop to a whisper once it eases.
Find your fit in two taps
Most people are protecting the rooms they spend the most time in, the bedroom and the living room, on smoky winter nights. Tell us where it'll run and how big the space is, and we'll point you to the right unit. Heavier smoke benefits from more airflow, so when in doubt, size up. No quiz, no email.
Sizes are matched to keep around three air changes an hour at a comfortable noise level for each setting. Bedrooms stay under 30 dB for sleep; living areas can run louder by day for extra airflow.
Smart Air Sqair
- 315m³/h CADR
- 43 m²room size
- 23 dBfrom, on low
Smart Air SA600
- 508m³/h CADR
- 60 m²room size
- 16 dBfrom, on low
Smart Air SA700
- 720m³/h CADR
- 78 m²room size
- 42 dBsteady
Even bigger, or a large quiet bedroom?
The Blast range carries the same HEPA and high-CADR approach into the largest rooms, the kind of airflow that clears heavy smoke quickly. Smart Air deployed 800+ Blast purifiers in California wildfire response, run continuously to keep community spaces breathable. The Blast Mk II also runs at just 29 dB on low, the quietest big unit we make for a large bedroom.
How HEPA purifiers help with smoke
Smoke is mostly fine PM2.5: particles small enough to get deep into your lungs. A HEPA filter captures these very effectively, close to all of them in a single pass. The real-world limit isn't the filter, it's CADR, how much air the unit can move through that filter. That's why sizing matters more in heavy smoke, and why running a bit higher during the worst of it helps.
It works the same way whether the source is a neighbour's woodburner, winter haze settling over the suburb, or wildfire drift like the Port Hills fire. The particles are the same, and the filter handles them.
Smell is a separate job. Smoke odour is gas, not particles, so a carbon filter is what helps there. It reduces the smell, but it won't fully clear it, and it can't touch smoke that's already soaked into walls, carpet and furniture.
A purifier can help with
- Airborne smoke particles (PM2.5) from woodburners, fires and winter haze
- Reducing how much outdoor smoke you breathe once it leaks inside
- Creating a cleaner-air room to retreat to during a smoke event
- Some of the smoke smell, with a carbon filter
It won't
- Stop smoke getting into your home. Sealing up does that
- Remove smoke smell soaked into walls, carpet, curtains or furniture
- Fully clear the embedded smell in a long-term smoker's house
- Replace airing the house out once the outdoor air is clear again
Where a purifier shines, and where it doesn't
This is one concern where a HEPA purifier genuinely earns its place. For woodburner smoke, winter haze and wildfire particles, it's one of the most effective indoor tools there is, because the health concern is the particles, and HEPA captures them well. It's the same reason air quality agencies reach for them: Smart Air sent more than 800 Blast units into California's wildfire response to keep clean-air spaces running for days at a time.
The honest limit is smell, and cigarette smoke is the clearest example. The airborne particles can be filtered, but cigarette smoke soaks into walls, carpet, curtains and furniture and keeps releasing odour from there. In a home where someone smokes indoors, a purifier will help the air while it runs, but it won't get rid of that embedded smell. Carbon reduces odour, it doesn't eliminate it.
HEPA for the smoke particles, the health-relevant part.
Carbon plus fresh air for the smell, once outdoor air clears.
So our honest take: brilliant for the particles, helpful but not magic for the smell. For the full picture, including how to seal up and create a clean-air room, see our guide to staying safe in smoke.
What Kiwi homes dealing with smoke say
Solved the neighbour's log-burner smoke
The Sqair is a beautiful and really effective addition to my home, and has quickly solved my problem with log-burner smoke from neighbours. One of my favourite things ever for better comfort and sleep.
Julie RSmart Air Sqair
Removing smokiness from an open wood burner
The magnetic doors are simple and clever, and the filters are easy to fit. The intention is to remove smokiness from a room with an open wood burner, and it seems to be working well.
CliveSmart Air SA600
No more stinky smoke smell
Bought two of these little QT models to combat air pollution in bedrooms from wood-burning fires in the neighbourhood. Combined with keeping windows a tiny crack open, they're doing a fantastic job cleaning the incoming air. No more stinky smoke smell. Not too noisy either.
Renee JSmart Air QT3
PM2.5 reads zero on my monitor
I have Smart Air units covering a large open living, dining and kitchen area, plus each bedroom and the home office. They run 24/7, are very quiet, and cover the CADR for our room sizes on the lower speeds. The PM2.5 on my air quality monitor registers 0.
KaranSmart Air Blast Mk II
Smoke and air purifier FAQs
Do air purifiers help with woodburner or wildfire smoke?
Will it get rid of the smoke smell?
Does it help with cigarette smoke?
Can a purifier stop smoke getting into my home?
Should I run it overnight in winter?
How much is delivery and how long does it take?
Learn more about smoke and clean air
We believe in open data and honest science. These sources explain why smoke PM2.5 matters and how HEPA filtration helps reduce it indoors.
Ready to clear the air?
A quiet, ioniser-free HEPA purifier is one of the most effective indoor defences against woodburner and wildfire smoke particles. Honest about the smell, strong on the part that matters.
Shop our purifier range