Maintain reliable cooling from your Lennox CX34-43C-6F-1 evaporator coil with genuine OEM replacement parts from Repair Clinic. The CX34-43C-6F-1 is a cased upflow evaporator coil from Lennox’s CX34 series, rated for three-and-a-half-ton to four-ton split-system installations. The drain pan and condensate drain fittings are the most frequently serviced external components on the CX34-43C-6F-1. Repair Clinic stocks genuine Lennox OEM parts for the CX34-43C-6F-1. Browse the Lennox central air conditioner parts catalog filtered by CX34-43C-6F-1 for the complete parts inventory.
Lennox CX34-43C-6F-1: Cased Upflow Evaporator Coil Service
The Lennox CX34-43C-6F-1 is a cased upflow evaporator coil that mounts above or below the air handler or furnace and connects to the outdoor condensing unit via refrigerant lines. Annual condensate drain line flushing prevents the overflow that causes most CX34-43C-6F-1 water leak complaints. TXV valve replacement on this coil requires an EPA 608 certified technician to recover and recharge the refrigerant circuit.
Most Replaced Parts on the Lennox CX34-43C-6F-1
Drain Pan for the Lennox CX34-43C-6F-1
The condensate drain pan collects moisture from the evaporator coil during cooling operation. A drain pan that overflows continuously has a clogged condensate drain outlet. Clear the drain line completely before replacing the pan.
TXV Valve for the CX34-43C-6F-1
The thermostatic expansion valve meters refrigerant flow into the evaporator coil. TXV replacement requires an EPA 608 certified technician.
Access Panel and Cabinet Components
The cased cabinet protects the coil assembly and allows service access through removable panels. A cracked or bent access panel allows unconditioned air to bypass the coil, reducing system efficiency.
Condensate Drain Fittings
The drain fitting connects the drain pan outlet to the condensate drain line. A cracked fitting causes water to drip directly onto the furnace or air handler below the coil cabinet.
Why Choose Repair Clinic for Lennox CX34-43C-6F-1 Parts
- Genuine Lennox CX34 OEM Components: Drain pans and TXV valves confirmed for the CX34-43C-6F-1 cased upflow evaporator coil Lennox central air conditioner parts.
- Annual Drain Line Maintenance Guidance: Condensate drain line flushing is documented as the most cost-effective preventive step to prevent the leading water leak complaint on this coil.
- TXV Replacement Service Context: TXV valve replacement on the CX34-43C-6F-1 requires an EPA 608 certified technician to recover and recharge the refrigerant circuit.
- 365-Day Returns: Return any uninstalled Lennox part within a full year of purchase with no restocking fees.
Lennox CX34-43C-6F-1 Evaporator Coil Parts FAQ
What is the Lennox CX34-43C-6F-1 and what capacity is it?
The Lennox CX34-43C-6F-1 is a cased upflow evaporator coil from Lennox’s CX34 series, rated for three-and-a-half-ton to four-ton split-system installations. The CX34 designation identifies Lennox’s cased upflow evaporator coil product line.
What does the Lennox CX34-43C-6F-1 evaporator coil do?
The evaporator coil absorbs heat from indoor air as refrigerant evaporates inside it. Cooled air then flows from the coil into the ductwork for distribution through the home. A dirty or iced evaporator coil reduces cooling capacity.
Why is water leaking from my Lennox CX34-43C-6F-1?
Water leaking from the CX34-43C-6F-1 is most commonly caused by a clogged condensate drain line that causes the drain pan to overflow. Clear the drain line before replacing the drain pan to confirm the pan itself is cracked rather than simply overflowing.
Is the Lennox CX34-43C-6F-1 compatible with R-410A systems?
Confirm the refrigerant type and system matchup from the unit data plate and documentation. The CX34 series was produced across multiple refrigerant generations. Always verify system compatibility based on BTU capacity and refrigerant type before pairing with an outdoor unit.
