Overview
- Late July coverage of rising heat and tropical nights in Spain summarizes practical advice from technicians and energy experts about household cooling.
- A modern DC ceiling fan running eight hours uses about 0.24 kWh, costing only a few euro cents per night, and improves comfort by increasing sweat evaporation rather than lowering air temperature.
- A properly sized inverter air conditioner actively removes heat and can average roughly 600 W overnight for a 14–15 m² room, which translates into moderate nightly consumption and a noticeably lower indoor temperature.
- Experts say the most efficient strategy is to prevent heat entering first with exterior shading such as awnings, pergolas or louvres, then combine night ventilation, fans and an energy‑efficient AC when needed.
- Household impact: in long heat waves, high humidity, or poorly insulated homes fans reach their limits and reliance on AC rises, which could increase electricity demand and push more homeowners to invest in shading and efficient systems.