HVAC's share of annual energy use in an average data center (ENERGY STAR) — a general efficiency benchmark, not an instantaneous electrical-demand or drive-load share
~40%observed
| Value kind | observed — Reported measurements, counts, and specifications keep the precision and scope stated by their source; an exact specification is not treated as a range. |
|---|---|
| Scope | Share of annual site energy in an average (air-cooled) data center. Not a demand fraction, not a VFD share, and not a harmonic-spectrum input: a power-system study takes the project's mechanical equipment list, operating cases and drive data. |
| Caveat | Does not describe a liquid-cooled AI campus, whose mechanical share and drive mix differ by design. |
| As of | 2025 |
| Source | ENERGY STAR |
| Review | checking…review by 2026-12-01 · standard cadence |
| Recorded changes | last 2026-07-14 · 2 revisions tracked |
| Claim id | share-of-site-demand-from-cooling-vfd-driven |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.