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A Typically 15–20 years with proper maintenance; consider replacement if repairs mount, efficiency drops, or safety issues arise.
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A Yes—heat pumps often run longer at lower speeds to maintain setpoint efficiently; cold‑climate models maintain capacity better at low outdoor temperatures.
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A Possible reasons: overheated unit tripping the limit, dirty filter restricting airflow, an extinguished pilot/ignition issue, or thermostat fan set to ON. If persistent, call a pro.
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A At least annually—schedule service before heating (and cooling for heat pumps) seasons to check safety, airflow, and efficiency.
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A Use AUTO for most cases to avoid re‑evaporating moisture; ON can help circulation but may reduce dehumidification and raise energy use.
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A Usually a clogged condensate drain, frozen evaporator coil, or a cracked drain pan. Turn off the unit and have the drain/coil inspected.
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A About 10–20 years depending on usage, climate, installation quality, and maintenance. Efficiency and reliability often decline in later years.
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A Likely low refrigerant (leak), dirty coils, or compressor problems. If icing occurs, shut off the system and call a professional.
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A Common causes include a clogged filter, dirty coils, blocked/leaky ducts, low refrigerant from a leak, or compressor/control faults. Start with filter/thermostat checks, then schedule diagnostics.
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A Central AC condensers can be lightly covered (breathable) to keep debris out, but ensure airflow is not restricted; do not cover a heat pump that runs in winter. Maintain clearances.
