Schaefer Brush 43285 Flue Brush 2.5 in Dia 8 in Oal

Product Description

The SCHAEFER BRUSH 43285 is an extra heavy filled double stem, single spiral flue brush designed for cleaning flue passages, vent pipes, and combustion tubes in heating systems. Built with tempered steel wire fill, it delivers aggressive scrubbing action against soot, scale, and debris buildup inside metal flue surfaces. The brush measures 2.5 inches in diameter with an 8-inch overall length and a 4.5-inch brush section. The 3/8-inch NPSM male connection allows attachment to standard extension rods for deep-reach cleaning. HVAC technicians and chimney service pros reach for this brush during annual maintenance and combustion system inspections.

This flue brush is suited for residential and light commercial heating applications where regular flue cleaning is required to maintain system efficiency and safe venting. It is commonly used on gas-fired furnaces, boilers, oil-fired appliances, and B-vent systems. The extra heavy fill density and double stem construction make it appropriate for flues that accumulate heavy deposits and require more aggressive mechanical cleaning than standard-weight brushes provide. The 3/8-inch NPSM male fitting threads onto compatible extension rod sets to reach full flue depth without full disassembly.

Key Features

• Tempered steel wire fill for durable, aggressive soot and scale removal
• Extra heavy fill density with double stem construction for increased scrubbing force
• Single spiral configuration maintains consistent contact with flue wall surface
• 2.5-inch diameter brush head fits standard residential flue sizes
• 3/8-inch NPSM male connection threads onto standard extension rods
• 4.5-inch brush length covers adequate surface area per pass

Compatibility

Designed as an OEM-style service brush for use with standard 3/8-inch NPSM extension rod systems commonly used in residential and light commercial flue and vent cleaning applications.

Installation Notes

Installation and use of this brush is typically performed by licensed HVAC technicians or chimney service professionals. Always shut down and allow the appliance to cool completely before inserting any cleaning tool into the flue or vent system. Verify the brush diameter matches the interior flue diameter before use to avoid jamming or damage to flue liner surfaces. Work in accordance with local codes and manufacturer service guidelines when performing combustion system maintenance.