Pentair ETI Heat Exchanger Coil Cleaning Kit, 461109

Pentair 461109 ETI Heat Exchanger Coil Cleaning Kit

The Pentair 461109 is an ETI Heat Exchanger Coil Cleaning Kit. It includes a dynamic cleaning brush assembly for service and maintenance cleaning on the ETi Heat Exchangers.

The ETi series uses a titanium/ASME condensing heat exchanger, which accumulates scale and debris in the coil passages. The 461109 kit provides:

• Dynamic coil‑cleaning brush assembly

• Correct shaft length for the ETi coil depth

• Non‑abrasive bristles safe for titanium

• Designed to navigate the tight coil geometry unique to ETi heaters

This is the only Pentair‑approved tool for internal coil cleaning. 

Compatibility

Based on the product cards and Pentair’s service documentation, 461109 fits:

• ETi 250

• ETi 400

• ETi ASME commercial variants

It does not fit MasterTemp, Max‑E‑Therm, or UltraTemp systems — those use different exchanger designs.