Czech and Slovak experts advise on cooling homes during summer heat
Guidelines for refrigerator use stress setting the compartment at 4‑5 °C and the freezer at –18 °C, placing foods with hot items on the top shelves, storing eggs inside the main compartment, and keeping the fridge about two‑thirds full. The doors should be opened briefly and kept closed, and the appliance should be placed away from direct sunlight, heat sources and with adequate side and rear ventilation.
For air‑conditioners, keeping the unit on at a modestly higher thermostat setting saves energy and controls indoor humidity better than switching it off entirely. Recommended adjustments are 2–5 °C higher for a one‑day absence and 5–10 °C higher for longer periods, while still maintaining a minimum temperature to prevent excess moisture buildup.
When choosing between cooling devices, fans only move air and do not lower room temperature, evaporative coolers provide a cooler breeze but increase humidity, and mobile air‑conditioners physically remove heat from the space but require an exhaust hose. The Whirlpool PACF212HP mobile unit can both cool (12 000 BTU/h) and heat rooms up to 30 m², uses low‑impact R290 refrigerant, and includes humidity‑control and remote‑sensor features.
Simple heat‑blocking measures for windows involve attaching reflective aluminium foil to the exterior side of glass, leaving a small air gap, and using tape to secure it to the frame. This can reflect up to 95 % of solar radiation and immediately lower indoor temperatures without costly renovations.
Additional coping ideas mention free online games that can occupy residents during prolonged heat waves, offering a low‑cost indoor distraction.