We all keep cranking the portable AC down to 16°C, when it’s this one panel around the hose that decides whether the room ever cools
You’re cranking the thermostat down to 16°C, but one small detail around your exhaust hose might be sabotaging everything. A poorly sealed window panel can drain up to 78% of your portable AC’s cooling power, leaving your room stubbornly warm no matter how low you set the dial.