Yes, it is very bad for your air conditioner to run continuously without ever shutting off, as it leads to excessive wear, skyrocketing utility bills, and potential equipment failure. If your AC runs all day, it is usually caused by severely low refrigerant levels, a dirty clogged air filter choking airflow, an oversized or undersized system, leaky ductwork, or extreme outdoor heatwaves. Continuous operation causes evaporator coils to freeze over into solid blocks of ice, which can ultimately burn out the expensive compressor motor. Verification: Monitor supply vent temperatures and check whether your monthly electricity consumption spikes abnormally.
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