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| Spec | AlorAir Sentinel HD55 (original, R410A) | AprilAire E100W Wi-Fi |
|---|---|---|
| Photo |  |  |
| Our score | Not reviewed yet | SCORE7.2 / 10 |
| Our take | The original R410A HD55, sold as a 113-pint unit, with no 65°F rating on record. Buy the HD55S instead, which has one. | The E100 with Wi-Fi and app control; the Amazon bundle adds a condensate pump and hanging kit. The version we'd buy for a crawl space or attic you rarely visit. |
| Capacity (old 80°F test) | 53 pt/day | 100 pt/day |
| Lowest operating temp | 33.8°Fbest | 50°F |
| Built-in pump | n/a | No |
| Noise (maker figure) | 52 dBAbest | 55 dBA |
| Type | Crawl space | Whole-house |
| Warranty | n/a | 6 yr |
| Watch out for | Three units share the HD55 name: the original HD55 (R410A), the HD55S (R32, ENERGY STAR, gravity drain) and the HD55P (built-in pump). Not in the ENERGY STAR certified data. | ENERGY STAR's 85 pints/day is at the 73°F whole-home test; don't line it up against a portable's 65°F rating. Dehumidifies only above 50°F inlet air and a 40°F dew point; a crawl space that drops below that in winter leaves it idle. The 5,500 sq ft coverage claim is the maker's; size by moisture load, and duct it if you want it to dry more than its own room. The E100W isn't named in ENERGY STAR's E100 record, though its shop page claims Most Efficient. The 6-year warranty is the shop page's wording; the Amazon bundle's warranty field says 5 years and we found no printed E100W warranty. Keep a copy of the shop page with your receipt. The Amazon bundle title claims 4,400 sq ft; AprilAire's shop page says 5,500. |
| More | Model detailsOur full review | Model detailsOur full reviewView on Amazon → |