ASHRAE liquid classes by max supply water temp (17/27/32/40/45 °C, plus W+); all share a 2 °C lower limit
W17 / W27 / W32 / W40 / W45 / W+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. |
|---|---|
| As of | 2024 |
| Source | ASHRAE TC 9.9 Thermal Guidelines, 5th ed. (revised reference card, Table 3.1) |
| Review | checking…review by 2027-05-31 · slow cadence |
| Recorded changes | last 2026-10-14 · 2 revisions tracked |
| Claim id | ashrae-liquid-classes-by-max-supply-water-temp |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.