When your lennox xc25 is most likely to develop issues, based on community repair data and manufacturer patterns.
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The most common failure types, sorted by when they typically appear.
The AC removes humidity as it cools, producing condensation that drains through a pipe. Algae, mold, and debris clog the drain, causing water to back up into the drain pan and potentially overflow, causing water damage to ceilings, walls, or floors.
When airflow is restricted (dirty filter, blocked vents) or refrigerant is low, the evaporator coil drops below freezing. Ice forms on the coil, further blocking airflow in a vicious cycle. The AC blows warm air or stops working entirely. Often a symptom of another issue.
Inverter-driven AC systems use an electronic inverter board to vary compressor speed for efficiency. When the board fails, the compressor may not start, run only at one speed, or display error codes. Replacement boards are expensive and often brand-specific.
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