Fridge and Air‑Conditioner Care Guidance for Energy Efficiency

Specialists advise that refrigerators should be set no higher than 4 °C to keep food safe and avoid excessive energy use, while temperatures below about 0.5 °C cause the unit to operate like a freezer and can freeze fresh produce. They also recommend locating the fridge away from heat sources such as ovens, stoves, dishwashers, garages or basements, and warn against over‑cooling the appliance during hot weather because it forces the compressor to work harder.

For air‑conditioners, experts note that a persistent musty or damp smell, reduced cooling performance, weaker airflow, or visible black, green or brown spots on filters indicate mold growth. Mold thrives in the humid, dark interior of the unit, especially when filters and condensate trays are not cleaned regularly. Proper maintenance—regular filter cleaning, draining condensate, and keeping the system dry—prevents mold, preserves indoor air quality, and maintains the unit's energy efficiency.