AlorAir Sentinel HD55S Dehumidifier vs AlorAir 180 Pint Crawlspace Dehumidifier

Both are AlorAir crawl space units with built-in pumps, automatic defrost and corrosion-protected coils, so the choice comes down to size. The 180-pint model moves more air, covers a larger area and runs down to 37.4°F, which suits bigger or colder crawl spaces. The 120-pint model is smaller and lighter, easier to fit through a low hatch and to lift into place. Owners of both report easy installs and units that last years; the 120-pint's known weak point is a humidistat that reads a few percent off and occasional freeze-ups.

• Choose the AlorAir 120 PPD if your space is around 1,300 sq. ft. or less and you want a lighter, more compact unit that is easier to carry and fit through a tight crawl space access.
• Choose the AlorAir 180 Pint if you are drying a larger space up to 2,300 sq. ft., need stronger airflow, or the crawl space drops near or below 40°F.