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Reduced airflow, hot motor

What is going on

Possible causes and checks for: reduced airflow, hot motor.

Likely causes

  • Dirt on blades
  • Over-oiled bearings
  • Belt tension wrong

Check in this order

  1. Clean blades every
  2. Months
  3. 1–2 drops oil/yr
  4. Belt deflection = belt width
  5. Tight side on bottom

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Source: General HVAC service practice — verify per model. Written in our own words; check the manual for your exact model.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.