Mill-rose 4964 Horsehair Boiler Flue Brush 0.5x12 in

Product Description

The MILL-ROSE 4964 is a horsehair boiler and flue brush designed for cleaning boiler fireboxes, burner assemblies, radiators, flue passages, and vents. The brush head measures 0.5 inches in diameter and the overall length is 12 inches, making it suited for reaching into narrow tubes, ports, and flue sections where soot, scale, and debris accumulate. Horsehair bristles provide firm but controlled scrubbing action without scoring metal surfaces. HVAC technicians and boiler service professionals use this brush as part of routine combustion-side maintenance and annual cleaning procedures.

This brush is used in residential and light commercial heating applications. Typical installations include steam and hot-water boilers, cast-iron radiator systems, natural draft flue passages, and burner tube cleaning. The 0.5-inch diameter profile allows access to small-diameter ports and tubes common in older boiler designs. It is well suited for seasonal boiler tune-ups, heat exchanger cleaning, and flue inspection prep work performed by licensed heating technicians.

Key Features

• 0.5-inch diameter brush head fits narrow boiler tubes, burner ports, and flue passages
• 12-inch overall length provides reach into deep or recessed sections
• Horsehair bristles deliver firm scrubbing without scratching or gouging metal surfaces
• Suitable for boiler, burner, radiator, flue, and vent cleaning applications
• Purpose-built for combustion-side maintenance tasks on heating equipment

Compatibility

Designed for use in boiler, burner, radiator, flue, and vent cleaning applications on residential and light commercial heating systems.

Installation Notes

Always shut down the boiler and allow the system to cool completely before performing any cleaning or inspection work. Verify that burners are off and fuel supply is isolated before inserting tools into combustion chambers or flue passages. This brush is a hand tool requiring no special power tools, but appropriate personal protective equipment including gloves and eye protection should be worn when working in sooty or confined combustion spaces. Follow local codes and equipment manufacturer service guidelines for boiler maintenance intervals and procedures.