Yes, pre-chilling a cooler actually helps.

It’s not a gimmick. If you throw ice into a hot cooler, the cooler’s plastic walls absorb some of the ice’s cold energy just to cool themselves down. That means your ice melts faster than if the cooler was already cold.

Pre-chill by storing the empty cooler in a cool place (basement, garage in winter) or tossing a bag of ice in it for 30 minutes and dumping the melt water. You don’t need to waste a full bag — just enough to drop the internal temp. It’s a simple habit that buys you a few extra hours of ice life on a hot day.

If you’re already keeping the cooler in the shade and minimizing opening it, pre-chilling is the next easy upgrade. It’s not magic, but it’s free and it works.