The Carrier KH43LG077 3/8" ODF Liquid Line Drier is an essential OEM component designed for high-performance moisture and contaminant removal in residential and commercial cooling systems. This liquid line filter drier features a 3/8 inch ODF sweat connection, ensuring a secure, leak-free joint when brazed into the refrigerant circuit. Built with a high-capacity desiccant core, it effectively captures moisture, acid, and solid debris to prevent capillary tube plugging and expansion valve indexing issues. As a Carrier genuine replacement part, it maintains factory-spec internal volume and pressure drop characteristics, which are critical for protecting the compressor from premature wear caused by hydrofluoric or hydrochloric acid formation. Whether you are performing a compressor burnout cleanup or a standard refrigerant circuit repair, installing this HVAC filter drier ensures the system remains dehydration-certified and free of particulates down to 20 microns. Its robust steel shell and corrosion-resistant finish are engineered to withstand the high-side pressures common in R-410A and R-22 applications.

Key Benefits

• Superior Moisture Absorption: High-grade desiccant specifically formulated to neutralize corrosive acids and eliminate internal system moisture.
• OEM Compatibility: Guaranteed fit for specific Carrier, Bryant, and Payne units, eliminating the need for field modifications to the liquid line.
• Optimal Filtration: Protects sensitive TXV (Thermostatic Expansion Valves) and orifices from copper fines and installation debris.
• Durable Construction: Features a shock-resistant steel housing and solid copper fittings for easier brazing and long-term reliability in harsh environments.

Common Questions

Is the Carrier KH43LG077 compatible with R-410A systems?
Yes, this drier is rated for high-pressure Puron (R-410A) systems as well as legacy R-22 and R-134a applications, provided the 3/8" ODF sizing matches the liquid line.

Should I replace this drier every time I open the system?
Yes. Veteran technicians recognize that any time the refrigerant circuit is opened for service or a leak repair, the liquid line drier must be replaced to ensure any atmospheric moisture introduced is captured before it reaches the compressor.

Does this model support bi-directional flow for heat pumps?
The KH43LG077 is a standard liquid line drier. For heat pump applications where the drier is located in a common line that reverses flow, verify the flow arrow or consult the unit’s parts list to ensure a bi-flow model isn't required for that specific circuit location.

Item is Non Cancelable / Non Returnable

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.