Blast Mini HEPA Filter


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HEPA filters capture particulate pollution like PM2.5 and pollen, and are the key to clean air. This is the replacement HEPA filter for the Blast Mini air purifier.

Blast Mini H13 HEPA Filter

Cleaner air in your home and office

The Blast Mini HEPA filter protects you during Thailand’s haze season

Do you live in one of Thailand’s most polluted cities? Air pollution has become a serious environmental and health issue in Thailand, and the smoke and haze season is particularly dangerous. Not even your homes can escape being filled with these harmful microscopic particles.

The Blast Mini’s HEPA filter effectively traps particles like PM2.5, dust, pet fur, viruses and mold. You won’t have to worry about your allergies or asthma any longer!







Blast Mini HEPA’s massive area captures 99.95% of pollutants

The Blast Mini HEPA filter is huge — 10 times the size of our Original DIY HEPAs.

We tested over 10 different HEPA materials before deciding on using an H13, 99.95% grade HEPA filter. That means it can capture 99.95% of those particles above (and below) 0.3 microns!


HEPA Grade

Are HEPA filters effective against COVID?

A common concern is whether HEPA filters can filter viruses like the COVID-19 coronavirus. HEPA filters removes particles greater than or equal to 0.3 microns, but virus particles are smaller. The coronavirus measures 0.06 to 0.14 microns in diameter. Are air purifiers then powerless against viruses?

Actually, HEPA filters work great at capturing viruses. This is because a HEPA filter works not like a net, but through a process called diffusion. Learn more about how this works here.

How often should I change my Blast Mini HEPA filter?

We tested a HEPA in real Beijing air for 200 days to get a sense of how long HEPAs last in real Beijing air.
Based on that data, Paddy estimated a HEPA lifespan of 3120 hours for the Blast Mini. This is roughly equal to 13 months at 8 hours of use every day. With Thailand’s air quality roughly comparable to Beijing, you can rest assured that these numbers will not vary much in Thailand.

High speed setting Low speed setting

Room size: 85m²

2,900 hours
3,100 hours

Room size: 130m²

4,600 hours
5,280 hours

Can I wash a dirty HEPA filter?

Unfortunately not. We ran experiments to test this and found that washing HEPA filters does not prolong their lifespan. In fact, washing HEPA filters with water actually decreases performance. That’s why we recommend you replace your Blast Mini HEPA filter after the maximum hours of use.

At under ฿3000 for a year of clean air, the Blast Mini HEPA offers you the best prices for clean air.

Time to change the HEPA?

You’ll only need to change it every year or so, but we still tried to keep things simple.

Your Purchase Includes 1x Blast Mini HEPA filter
Type H13 grade (99.95%)
Colour White with black rim
Lifespan 3120 hours, or 13 months at 8 hours a day
Dimensions L x W x H (cm) 57 x 7 x 57


น้ำหนัก 3.8 กก.
ขนาด 60 × 60 × 9 เซนติเมตร



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