Lennox 49W23 Drier

The Lennox 49W23 is a high-capacity bi-flow liquid line filter drier designed specifically for R-410A heat pump systems. This 16-cubic-inch unit serves as a critical HVAC contaminant removal component, utilizing a highly effective blend of activated alumina and molecular sieve desiccant to capture moisture and neutralize acid. When dealing with high-pressure refrigerants, the 49W23 provides the necessary structural integrity with its solid steel shell and corrosion-resistant finish. Its bi-flow design features internal check valves that ensure directional refrigerant filtration in both heating and cooling modes, eliminating the need for external bypass piping. For professional contractors, this Lennox OEM replacement part simplifies maintenance cycles by preventing orifice plugging and protecting the compressor from internal debris. Replacing a saturated drier during any system breach is standard best practice to maintain the thermodynamic properties of the charge and prevent HVACTXV failure.

• Bi-Directional Filtration: Optimized for heat pump applications to ensure debris capture in both cycles.
• High Water Capacity: Superior moisture adsorption prevents ice formation at the expansion valve.
• Structural Integrity: Rated for the high operating pressures specific to R-410A systems.
• Lennox OEM Specification: Exact fitment reduces bench time and ensures compatibility with Lennox heat pump footprints.
• Acid Neutralization: Effectively removes harmful system contaminants that lead to motor winding degradation.

Is the Lennox 49W23 compatible with older R-22 systems?
While functionally similar, this model is optimized for the lubricants and pressure requirements of R-410A. Always verify system pressure ratings before installation.

What are the connection sizes for this filter drier?
The 49W23 typically features 3/8-inch ODF solder connections, standard for residential and light commercial split system liquid lines.

Does this unit require a specific orientation?
As a bi-flow drier, it can be installed in either direction on the liquid line, though horizontal mounting is preferred in many Lennox service manuals to optimize flow.

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.