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A Often yes—longer low‑speed operation improves comfort, humidity control, and noise; savings depend on climate and home envelope.
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A They’re updated 2023 metrics under revised test methods; compare new equipment using these ratings for apples - to - apples efficiency.
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A Frost forms on outdoor coils in cold, humid weather; periodic defrost is normal to restore airflow and capacity.
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A Better to raise setpoint by 7–10°F rather than shutting off completely—especially in humid climates—to maintain moisture control.
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A Have the condensate drain cleaned/treated during maintenance, keep filters fresh, and ensure proper coil cleanliness and slope to the drain.
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A Icing on the evaporator/lines, hissing noises, reduced cooling, and longer runtimes. Leaks must be found and repaired by an EPA 608 - certified technician.
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A Dirty filters, duct leaks, refrigerant leaks, failing components, or incorrect thermostat schedules are common causes; schedule diagnostics if basics don’t resolve it.
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A At least once a year; heat pumps providing both heating and cooling benefit from annual service to check charge, coils, airflow, and controls.
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A Follow manufacturer schedules; many high‑MERV media are 6–12 months, but heavy dust/pets may require more frequent changes.
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A Target ~30–45% in winter but monitor windows/surfaces to avoid condensation; adjust by outdoor temperature and home tightness.
