Heating and cooling problems can affect comfort, energy use, and system reliability. This guide explains the most important things Bay Area property owners should know.
Rattling
Rattling may come from a loose panel, fastener, duct section, blower component, or debris. Persistent rattling deserves inspection.
Squealing or Screeching
High-pitched noises can indicate blower motor, bearing, or belt-related problems depending on the equipment design.
Banging or Booming
A loud ignition-related boom can be a safety concern. Turn the system off and arrange professional service rather than repeatedly restarting it.
Humming or Buzzing
Electrical humming may involve a transformer, motor, relay, capacitor, or other energized component.
When to Shut It Down
Stop using the furnace if you smell gas, see smoke, hear a severe ignition boom, or a carbon monoxide alarm activates. Leave the area and seek appropriate emergency help.