Lochinvar & A.O. Smith 100217958 Diptube
The Lochinvar & A.O. Smith 100217958 Diptube is a critical PEX differential dip tube engineered for high-efficiency cold water distribution in commercial and residential storage tanks. Built with a 3/4" NPT connection, this 42-inch diffuser dip tube utilizes a specialized "diff" design to prevent high-velocity turbulence at the bottom of the tank. By directing incoming cold water strategically, it maintains thermal stratification, ensuring that the hot water heater tank delivers consistent outlet temperatures without premature mixing. This OEM water heater part (also listed under part ID 747886) is compatible with a wide range of AO Smith water heaters and Lochinvar boilers requiring a 3/4" x 3" x 42" configuration. For pros in the field, this is the standard replacement to resolve "short-cycling" symptoms or poor hot water recovery rates caused by degraded or broken tubes. The durable PEX construction resists corrosive mineral buildup and thermal stress in high-demand HVACR environments.
Key Benefits for Contractors- Optimized Stratification: The 42-inch length and diffuser head ensure cold water stays at the bottom, maximizing the energy efficiency of the heating cycle.
- Precise OEM Fit: Guaranteed compatibility for models requiring 100217958, eliminating the need for field modifications or generic "cut-to-fit" alternatives.
- Industrial-Grade Material: High-temperature PEX construction provides superior resistance to lime scale and sediment compared to standard plastic tubes.
- Turbulence Reduction: The differential design reduces "milky water" issues caused by air entrainment during high-flow demand periods.
Is this dip tube compatible with other brands besides Lochinvar?
Yes, this is a genuine A.O. Smith manufactured part, also used across several State, Reliance, and American Water Heater commercial lineups. Always verify the 100217958 part number against your specific data plate.
Can I trim this 42-inch tube for a shorter tank?
While technically possible, trimming a differential dip tube may bypass the diffuser holes designed for specific flow patterns. It is recommended to use the exact length specified by the manufacturer for your model.
How do I know if my current dip tube has failed?
Common signs include a sudden drop in hot water volume, small plastic "flecks" in faucet aerators, or the water heater reaching temperature too quickly but running out of hot water almost immediately.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $42.73
-65%$42.73
$14.96Lochinvar & A.O. Smith 100217958 Diptube
The Lochinvar & A.O. Smith 100217958 Diptube is a critical PEX differential dip tube engineered for high-efficiency cold water distribution in commercial and residential storage tanks. Built with a 3/4" NPT connection, this 42-inch diffuser dip tube utilizes a specialized "diff" design to prevent high-velocity turbulence at the bottom of the tank. By directing incoming cold water strategically, it maintains thermal stratification, ensuring that the hot water heater tank delivers consistent outlet temperatures without premature mixing. This OEM water heater part (also listed under part ID 747886) is compatible with a wide range of AO Smith water heaters and Lochinvar boilers requiring a 3/4" x 3" x 42" configuration. For pros in the field, this is the standard replacement to resolve "short-cycling" symptoms or poor hot water recovery rates caused by degraded or broken tubes. The durable PEX construction resists corrosive mineral buildup and thermal stress in high-demand HVACR environments.
Key Benefits for Contractors- Optimized Stratification: The 42-inch length and diffuser head ensure cold water stays at the bottom, maximizing the energy efficiency of the heating cycle.
- Precise OEM Fit: Guaranteed compatibility for models requiring 100217958, eliminating the need for field modifications or generic "cut-to-fit" alternatives.
- Industrial-Grade Material: High-temperature PEX construction provides superior resistance to lime scale and sediment compared to standard plastic tubes.
- Turbulence Reduction: The differential design reduces "milky water" issues caused by air entrainment during high-flow demand periods.
Is this dip tube compatible with other brands besides Lochinvar?
Yes, this is a genuine A.O. Smith manufactured part, also used across several State, Reliance, and American Water Heater commercial lineups. Always verify the 100217958 part number against your specific data plate.
Can I trim this 42-inch tube for a shorter tank?
While technically possible, trimming a differential dip tube may bypass the diffuser holes designed for specific flow patterns. It is recommended to use the exact length specified by the manufacturer for your model.
How do I know if my current dip tube has failed?
Common signs include a sudden drop in hot water volume, small plastic "flecks" in faucet aerators, or the water heater reaching temperature too quickly but running out of hot water almost immediately.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Lochinvar & A.O. Smith 100217958 Diptube is a critical PEX differential dip tube engineered for high-efficiency cold water distribution in commercial and residential storage tanks. Built with a 3/4" NPT connection, this 42-inch diffuser dip tube utilizes a specialized "diff" design to prevent high-velocity turbulence at the bottom of the tank. By directing incoming cold water strategically, it maintains thermal stratification, ensuring that the hot water heater tank delivers consistent outlet temperatures without premature mixing. This OEM water heater part (also listed under part ID 747886) is compatible with a wide range of AO Smith water heaters and Lochinvar boilers requiring a 3/4" x 3" x 42" configuration. For pros in the field, this is the standard replacement to resolve "short-cycling" symptoms or poor hot water recovery rates caused by degraded or broken tubes. The durable PEX construction resists corrosive mineral buildup and thermal stress in high-demand HVACR environments.
Key Benefits for Contractors- Optimized Stratification: The 42-inch length and diffuser head ensure cold water stays at the bottom, maximizing the energy efficiency of the heating cycle.
- Precise OEM Fit: Guaranteed compatibility for models requiring 100217958, eliminating the need for field modifications or generic "cut-to-fit" alternatives.
- Industrial-Grade Material: High-temperature PEX construction provides superior resistance to lime scale and sediment compared to standard plastic tubes.
- Turbulence Reduction: The differential design reduces "milky water" issues caused by air entrainment during high-flow demand periods.
Is this dip tube compatible with other brands besides Lochinvar?
Yes, this is a genuine A.O. Smith manufactured part, also used across several State, Reliance, and American Water Heater commercial lineups. Always verify the 100217958 part number against your specific data plate.
Can I trim this 42-inch tube for a shorter tank?
While technically possible, trimming a differential dip tube may bypass the diffuser holes designed for specific flow patterns. It is recommended to use the exact length specified by the manufacturer for your model.
How do I know if my current dip tube has failed?
Common signs include a sudden drop in hot water volume, small plastic "flecks" in faucet aerators, or the water heater reaching temperature too quickly but running out of hot water almost immediately.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
