Replacement Filters for Blowtherm Spray Booths
Blowtherm builds high-performance downdraft and semi-downdraft booths used in collision, refinish, and industrial finishing. Their tight airflow tolerances are part of what makes them deliver clean results — and exactly why filter condition matters so much. As ceiling media loads, air velocity and uniformity fall and dirt starts showing up in the finish; as exhaust filters clog, extraction drops and booth pressure climbs. Fresh, correctly sized filters keep a Blowtherm booth performing to spec.
We stock replacement filters for Blowtherm booths and ship most orders the same business day. Browse the Blowtherm filter collection or use Find My Filter to match parts to your exact booth.
Which Filters Fit a Blowtherm Booth
A complete Blowtherm filter set generally covers:
- Ceiling (intake) filters — diffusion media supplying clean, even air to the spray zone; the main driver of finish quality.
- Exhaust / floor filters — paint-arrestor media that captures overspray before air leaves the booth.
- Prep-station and intake filters — depending on your Blowtherm configuration.
Sizes vary by model and install year, so confirm your frame openings before ordering. See confirmed-fit options in the Blowtherm collection, or send us your dimensions and we'll match them.
When to Change Blowtherm Filters
Intervals depend on volume and coatings, but as a general guide:
- Ceiling filters: Blowtherm publishes no fixed hours; its booth controls count run hours and read pressure. Booth makers that publish a figure put ceiling filters at about 1,000 to 1,200 operating hours. Your booth's pressure gauge is the real signal: change the blanket when it reaches the booth's limit.
- Exhaust filters: change on differential pressure — when the manometer hits the manufacturer's limit, typically about every 50 to 100 spray hours.
Monitor pressure drop instead of the calendar. Rising static pressure means the filters are loaded. Stocking spares means you never spray through a clogged set.
Custom-Cut Ceiling Filters for Blowtherm
If your Blowtherm plenum needs a non-standard size, our Custom-Cut Ceiling Filter Blanket is made to your exact dimensions — an exact fit with no gaps for overspray bypass. It's the cleanest way to fit older or modified booths, and it ships fast.
Why Buy Your Blowtherm Filters From Us
- Same-day shipping on most in-stock filters.
- Custom-cut sizing for any plenum or frame.
- Technician-backed — we service spray booths in the field and know what fits and lasts.
Ready to reorder? Shop the Blowtherm filter collection, match parts with Find My Filter, or call 800-381-0149 (Mon–Fri, 8am–4pm MST) and we'll confirm the exact filters for your Blowtherm.
