Schaefer Brush 76220 Boiler Furnace Fiber Brush

Product Description

The SCHAEFER BRUSH 76220 is a fiber boiler and furnace flue brush designed for cleaning heat exchanger flues, firetubes, and combustion passages in boilers and furnaces. The brush head measures 2.125 inches in diameter with a 7-inch bristle length, giving it enough coverage to scrub accumulated soot, scale, and deposits from the interior walls of flue tubes. A single spiral of bristles wraps the core for consistent surface contact. The standard wood handle extends the overall assembled length to 48 inches, reducing the need for additional extension rods on shorter flue runs. Installed by HVAC technicians and boiler service professionals during scheduled maintenance and combustion-efficiency service calls.

This brush is suited for residential and light commercial boilers and furnaces where flue tube or heat exchanger passage cleaning is required during annual service or at burner tune-up. The 2.125-inch head diameter fits common firetube and flue passage sizes of similar dimension. The 48-inch overall length makes it practical for direct-access cleaning without extension handles on shorter tube runs. Technicians performing combustion analysis, burner replacement, or seasonal startup work typically include flue brushing as part of the service sequence.

Key Features

• 2.125-inch brush head diameter sized for common boiler and furnace flue passages
• 7-inch bristle length provides extended scrubbing surface along the tube wall
• Fiber bristle material suitable for removing soot and soft deposits without damaging flue surfaces
• Single spiral bristle configuration for even contact pressure around the passage interior
• Standard wood handle with 48-inch overall assembled length for direct-access tube cleaning

Compatibility

Designed as an OEM-style replacement and general-service flue brush for boilers and furnaces with flue tube or heat exchanger passage openings sized to accept a 2.125-inch diameter brush head.

Installation Notes

Always shut down the boiler or furnace and allow all surfaces to cool completely before beginning flue or heat exchanger cleaning. HVAC technicians and boiler service professionals typically perform this work as part of annual maintenance under applicable local mechanical codes. Insert the brush with steady, even strokes and avoid forcing the head into passages significantly smaller than the brush diameter, as this can deform the bristle spiral. Wear appropriate respiratory protection when cleaning flue passages to avoid inhaling dislodged soot or combustion deposits.