13 °C or 16 °C: what a cellar is actually holding

The number on the dial is not the number in the bottle

A wine at 13 °C in the glass has usually spent years at a different temperature. Ageing chemistry slows roughly twofold for every 10 °C drop, so a cellar held at 16 °C is not 'slightly warmer' than one at 13 °C — it is ageing meaningfully faster, and the difference compounds over a decade.

Three temperatures people confuse

Serving temperature is what you want in the glass, typically 16–18 °C for red and 8–11 °C for white. Ageing temperature is what the bottle needs for years, normally 12–14 °C and stable. Room temperature is what the compressor actually fights. A dual-zone cabinet separates serving from ageing; a single-zone cabinet forces you to pick one and compromise the other.

Why the band matters more than the setpoint

A cellar that swings ±2 °C around 13 °C is worse than one that holds ±0.5 °C around 14 °C. Thermal cycling moves liquid past the cork, and every movement is a small oxidation event. Ask for the recorded band over 72 hours, not the manufacturer's setpoint.

The practical specification

For a mixed collection: a 12–14 °C ageing zone with a ±1 °C band, plus a separate 16–18 °C service zone. For whites served cold, chill in the glass or a small service fridge rather than dropping the whole cellar. This one decision avoids most of the 'my cellar is too cold for reds' conversations we have after handover.