Ao Smith 100110699 Drop-in Dip Tube 45 in 3/4 in

Product Description

The AO SMITH 100110699 is a drop-in dip tube measuring 45 inches in length with a 3/4-inch diameter, designed as a direct replacement component for water heater systems. The dip tube directs cold incoming water to the bottom of the tank, keeping it separated from the heated water at the top and maintaining efficient stratification. This part is installed by licensed plumbers and water heater service technicians during routine maintenance or when a failed dip tube causes a noticeable drop in hot water output or delivery of plastic fragments at fixtures.

This dip tube is suited for residential water heater applications where the original factory dip tube has deteriorated, broken, or disintegrated. A failed dip tube allows cold water to mix directly with hot water at the inlet, reducing effective tank capacity and hot water delivery. Replacing it restores proper tank stratification and hot water performance. It is intended for use as an OEM-style replacement part in standard tank-style water heaters.

Key Features

• 45-inch length provides full-depth cold water delivery to the bottom of the tank
• 3/4-inch diameter for standard water heater cold inlet connections
• Drop-in design simplifies installation without special tooling
• Replacement part restores proper hot and cold water stratification in the tank

Compatibility

Designed as an OEM-style replacement dip tube for AO SMITH tank-style water heaters requiring a 45-inch, 3/4-inch drop-in dip tube.

Installation Notes

Installation should be performed by a licensed plumber or qualified water heater service technician. Before servicing, shut off the cold water supply and disconnect power to the unit or turn off the gas supply, depending on the heater type. Allow the tank to depressurize before removing the cold inlet nipple and extracting the old dip tube. Verify the replacement tube seats fully and the inlet fitting is properly sealed before restoring water supply and power.

Technical Specifications

• Length: 45 inches
• Diameter: 3/4 inch
• Application: Replacement Part

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100110699