The Festool SYS-AIR Standard (Non-HEPA) Air Filter with DH-SYS-AIR Ceiling Bracket is a portable air filter system built to clean airborne dust in workshops and construction spaces. This is an air filter designed for capturing fine dust left behind after sanding, drilling, and sawing. If you work indoors and want cleaner air, less dust settling on finished surfaces, and a more professional cleanup at the end of the day, this setup is aimed right at that problem. Model Number: 577790-578357.

What makes this unit matter is that it handles the dust your extractor does not always catch. Festool rates the SYS-AIR at up to 423 cubic feet per minute, or 680 cubic meters per hour, which gives it enough airflow to keep air moving and filtering in rooms up to 57 square meters at three air renewals per hour. In practical terms, that means less fine dust hanging in the room, less dust landing on cabinets, floors, and tools, and less wipe-down work when the job is done.

The filtration system is a big part of the story here. Festool uses a two-stage filter setup to remove fine particles from the air, and the standard version is rated for dust class M applications with a filtration level greater than 99.9 percent. That makes it a strong fit for wood dust and mineral dust where clean air and dust control are a real part of the job, not just a nice extra. This is not a dust extractor replacement. It is the extra layer that helps clean the room air after collection at the tool.

The Systainer format is one of the smartest parts of the design. Instead of a bulky hanging air scrubber that is awkward to move around, the SYS-AIR is built in a compact Systainer³ M437 form. That matters if you work out of a van, need to move room to room, or want air cleaning in a temporary work area without dragging in a separate oversized machine. The carrying handle, compact footprint, and T-LOC compatibility also make it easier to fit into an existing Festool setup.

Festool also built in real-world usability features instead of overcomplicating it. You get two adjustable settings for airflow control, plus a filter status light that shows when performance is still good and when the filter is dirty enough to need attention. That is useful on actual jobs because you are not guessing whether the unit is still doing its job or just making noise. The integrated outlet module adds more flexibility too, letting you connect an extractor, a power tool, or additional air purifiers.

This version includes the DH-SYS-AIR ceiling bracket, which expands where and how you can use the unit. Mounting overhead helps keep the floor clear in tighter workspaces and can improve air circulation where bench space is limited. Festool also notes the system can be integrated into a dust protection wall and that up to six air purifiers can be connected in series for larger spaces. That gives the SYS-AIR a lot more range than a single-room, single-location air cleaner.

Compatibility is another reason this platform makes sense for current Festool users. The unit can connect to Festool Systainers and extractors through the T-LOC system, and the continuous-current outlet makes it easier to build a cleaner, more organized dust-control setup around the tools you already run. If your workflow already involves sanding, cutting, drilling, or cleanup in enclosed areas, adding room-air filtration is one of the more practical upgrades you can make.

Who should buy it? This setup makes the most sense for remodelers, finish carpenters, cabinet installers, woodworkers, and contractors working in occupied homes, finished interiors, or enclosed shop spaces where dust control affects both health and customer impression. If you mostly work outdoors, you may not need it. If you are regularly producing fine airborne dust indoors, the Festool SYS-AIR Standard (Non-HEPA) Air Filter with DH-SYS-AIR Ceiling Bracket solves a very real problem and does it in a format that is easier to live with than most dedicated air scrubbers.

Festool SYS-AIR Standard (Non-HEPA) Air Filter with DH-SYS-AIR Ceiling Bracket is the right call for cleaner indoor work

This is a smart buy for pros who already take dust seriously and want the room air to look as clean as the work they leave behind.

• Who it's for: Remodelers, finish carpenters, cabinet installers, woodworkers, and contractors working indoors where airborne dust and customer impression both matter.
• Why it stands out: You get strong airflow, a true two-stage filter setup, T-LOC system compatibility, and a compact Systainer form that is a lot easier to deploy than a bulky shop air scrubber.
• Worth knowing: This is the standard non-HEPA version, so make sure that matches your dust-control requirements. It is also most valuable when paired with extraction at the tool.

• What does this product do? It filters airborne fine dust in the room that may remain after tool-connected dust extraction, helping improve air quality and reduce cleanup.
• Is this a HEPA air filter? No. This listing is for the Festool SYS-AIR Standard non-HEPA version.
• Can it be mounted overhead? Yes. This package includes the DH-SYS-AIR ceiling bracket for overhead installation.
• Can multiple units be linked together? Yes. Festool states that up to six air purifiers can be connected in series for greater air circulation in larger spaces.