Festool SYS-AIR HEPA Air Filter System

The SYS-AIR HEPA delivers 265 CFM of H13-grade filtration in a 22-pound Systainer format, capturing 99.9% of fine dust particles including silica and PM2.5 that standard extractors miss. It trades raw airflow for superior filtration — perfect for finish work where air quality matters more than volume.

Skip it if you’re looking for whole-shop air cleaning. 264.8 cfm technical airflow won’t compete with ceiling-mounted units pushing 800+ CFM. This excels at targeted filtration near the work area, especially in occupied spaces where you can’t tolerate dust settling on finished surfaces.

Filtration That Actually Matters

The H13 HEPA rating isn’t marketing fluff. H13 HEPA Filter (>99.9% filtration efficiency) captures particles down to 0.3 microns — that includes the silica dust that causes silicosis and the PM2.5 particles your lungs can’t filter out. The standard non-HEPA version features higher airflow but lower filtration efficiency. HEPA version uses H13-class filter for >99.9% capture of fine particles (silica, PM2.5), while standard version is for general dust.

The two-stage system protects that expensive HEPA element. Preliminary filter: 1,332 in² (8,600 cm²) catches the big stuff before it clogs the main filter. Main filter: 3,812 in² (24,600 cm²) with the TripleV design maximizes surface area in the compact housing. Pre-filter should be replaced regularly to protect HEPA element.

Specification	HEPA Version	Source
Technical Airflow	264.8 CFM (450 m³/h)	Manufacturer
Marketing Airflow	Up to 400 CFM (680 m³/h)	Manufacturer
Main Filter Area	3,812 sq in	Manufacturer
Pre-Filter Area	1,332 sq in	Manufacturer
Filtration Efficiency	>99.9% (H13 grade)	Manufacturer
Noise Level	55-65 dB	Manufacturer
Power Draw	200W	Manufacturer

The marketing airflow (400 CFM) versus technical airflow (265 CFM) gap shows typical optimism. Trust the technical number for real-world planning.

Jobsite Reality Check

At 21.82 pounds in a Systainer format, this moves where you need it. Integrated T-LOC interface for stacking and mounting means it locks onto your dust extractor or cart — no bungee cords needed. Compatible with SYS-RB cart (204869) and vehicle racking systems for contractors already invested in the Systainer ecosystem.

Room coverage depends on your air change goals. Efficiently cleans rooms up to 613 sq ft, providing three air changes per hour. That’s a 25×25 foot room with 10-foot ceilings — realistic for bedroom renovations or small workshop spaces. Need more coverage? Can be connected in series with up to six units for larger spaces.

The three-direction discharge matters more than it sounds. Three-direction air discharge (left, right, back) to minimize turbulence prevents the unit from creating its own dust storm by stirring up settled particles. Smart design for finish work where every speck shows.

Its strengths include portability, ease of use, and the ability to target dust directly at the source, such as during sanding or cutting tasks. Set it near your miter station during trim work. Roll it into the room you’re sanding. The mobility changes how you think about dust control.

The Trade-Offs

Some users and industry observers note potential weaknesses, such as limited capacity for larger workshops or extensive dust collection needs. They’re right. This won’t replace proper dust collection at the source. Think of it as the second line of defense — catching what your extractor misses.

The 55-65 dB operating noise sits right at normal conversation level. You’ll hear it running, but crews can still communicate without shouting. Adjustable fan speed with Eco and Max modes lets you dial back the noise when full power isn’t needed.

No remote control hurts in ceiling-mount applications. Lack of remote start (noted in user forums) means climbing a ladder to change settings. The optional DH-SYS-AIR ceiling bracket (part 578357) works great until you need to adjust anything.

Bottom Line

Worth the premium for finish carpenters, cabinet installers, and anyone doing dusty work in occupied homes. The H13 filtration captures particles that matter for health — not just cleanliness. Montana’s long indoor season makes air quality crucial when you’re sealed up from October through April.

The real value shows in environments where dust control affects the final product. Paint rooms, stain booths, customer kitchens during cabinet installation — anywhere visible dust costs you money in callbacks or reputation.

Includes wear-and-tear coverage, theft protection, and spare parts availability through Festool’s 3-year Warranty All-Inclusive program. Register through MyFestool to activate full coverage. That theft protection matters for a portable unit that travels between jobsites.

FAQs

What’s the actual difference between the HEPA and standard versions?

The HEPA trades airflow for filtration. HEPA version uses H13-class filter for >99.9% capture of fine particles (silica, PM2.5), while standard version is for general dust. You lose about 150 CFM but gain protection against particles that cause lung disease. Choose based on what you’re cutting — MDF and engineered products demand HEPA.

Can this handle a full woodshop?

No. Efficiently cleans rooms up to 613 sq ft, providing three air changes per hour. That’s a two-car garage at best. Larger shops need ceiling-mounted units or multiple SYS-AIR units chained together. This excels at spot filtration near active work zones.

Does it work with non-Festool gear?

The Systainer format and T-LOC system work best with Festool equipment, but the unit functions independently. Built-in 200 mm (7-7/8 in) port for air-supply hose accepts the optional hose for directed extraction. Power cord plugs into any standard outlet.

How often do filters need replacement?

Festool doesn’t specify intervals in the provided data. Signal light indicator (Green for OK, Red for replacement needed) takes the guesswork out. Pre-filter should be replaced regularly to protect HEPA element. Budget for pre-filters every few months with heavy use, HEPA elements annually.

Is the ceiling mount worth it?

Depends on your shop layout. The optional DH-SYS-AIR ceiling bracket (part 578357) frees up floor space, but you lose easy access to controls. Better for permanent installations than jobsite use. Most contractors keep it mobile for maximum flexibility.