Leister TRIAC ST Air Filter, Black 4 in. x 2 in. Replacement Filter

This Leister air filter is the black 4 in. x 2 in. replacement intake filter for the TRIAC ST hot-air hand tool. One filter per piece. Replacing a clogged filter keeps airflow and heating performance consistent during membrane welding.

Key Features:

• Genuine TRIAC ST part: Factory replacement air filter for the Leister TRIAC ST hot-air hand tool.
• Black filter: Black filter element, 4 in. x 2 in., matching the factory specification.
• Restores airflow: A clean filter maintains proper air intake so the tool reaches and holds set temperature.
• Job-site maintenance: Filters clog quickly in dusty roofing environments, so spares keep crews working.
• Sold per piece: One filter per sell unit for easy kit stocking.

Specifications Table:

Fit and Compatibility:

Fits the Leister TRIAC ST hot-air hand tool; not confirmed for other Leister models in the sources.

Frequently Asked Questions (FAQ):

Q: What is included?
A: One black air filter, 4 in. x 2 in.

Q: Which tool does it fit?
A: It is the replacement air filter for the Leister TRIAC ST hot-air hand tool.

Q: How often should I replace the filter?
A: Inspect it regularly and replace when dirty or clogged; dusty job sites clog filters much faster.

Q: What happens if the filter is clogged?
A: Reduced airflow lowers output and can cause the tool to overheat or lose temperature.

Q: Is this sold as a pack?
A: It is sold one filter per piece; order multiples to stock the tool kit.

Expert Verdict Reviewed by the SuperArbor Pro Desk

Dirty intake filters are the most common cause of a TRIAC ST that will not reach temperature on a dusty roof. Check the filter at the start of each shift and blow it out or swap it as needed. Keep several spares per crew since filter changes take seconds and prevent mid-seam shutdowns.

Let the tool cool and disconnect power before removing or replacing the air filter; the nozzle and housing stay hot long after use.

Keep your TRIAC ST running at temperature with a genuine Leister replacement air filter.