40 pints for 1,500 sq ft crawl — Wet
Modeled from DOE/ENERGY STAR guidance; see methodology.
Recommendation: 40 pints/day (50–70‑pint class)
- Space type: Crawl
- Size: 1,500 sq ft
- Moisture condition: Wet
When to size up
If the space often stays below ~68°F, connects to other damp rooms, or you see frequent condensation, consider sizing up from 50–70‑pint class to the next class.
Portable dehumidifiers are rated at 65°F under DOE 2019/2020. Cooler air reduces capacity; basements and crawls often benefit from moving up one class.
What 40 pints/day means for this crawl
- Old-label equivalent: about 55 pints on a pre-2019 (80°F AHAM) box. Ratings shrank when DOE moved testing to 65°F, so ignore old charts that list bigger numbers (why).
- Water removed at rated output: about 5.0 gallons a day. Most bucket units need emptying at least daily at that rate, so a drain hose or condensate pump is worth it here.
- Capacity density: 26.7 pints per 1,000 sq ft, versus 26 pints/day for a above-grade room and 35 pints/day for a basement of the same size and dampness.
- If the space is larger: 2,000 sq ft at the same dampness needs 45 pints/day (50–70‑pint class).
Compare nearby sizes
- Same crawl, other sizes: 500 sq ft (22 pints/day) · 1,000 sq ft (32 pints/day) · 2,000 sq ft (45 pints/day)
- Same size, other dampness: Slightly–Moderately damp (22 pints/day) · Very damp (28 pints/day)
- Same size and dampness, other spaces: Above-grade Room (26 pints/day) · Basement (35 pints/day)
- Pick interactively: pint capacity picker
FAQ
What size dehumidifier for a 1,500 sq ft crawl that is wet?
About 40 pints/day under current DOE (65°F) ratings, which puts you in the 50–70-pint class. On older pre-2019 labels that is roughly 55 pints.
How much water will it pull out each day?
At rated output about 5.0 gallons (40 pints) per day; real output is lower once humidity drops toward your setpoint.