# Crawl Space & Basement Guide > Dehumidifier reviews, comparisons and practical moisture-control guides. ## Posts - [Where to place a dehumidifier in a crawl space](https://dryspaceguide.com/products/crawl-space-dehumidifiers/guides/where-to-place-a-dehumidifier-in-a-crawl-space/): Start at the crawl-space hatch and follow the route the cabinet and its future service work would take. - [Where to place a dehumidifier in a basement](https://dryspaceguide.com/products/crawl-space-dehumidifiers/guides/where-to-place-a-dehumidifier-in-a-basement/): You have a promising spot beside the drain and another near the damp area. - [Pump lift versus drain-hose length: checking the discharge route](https://dryspaceguide.com/products/crawl-space-dehumidifiers/guides/pump-lift-versus-drain-hose-length-checking-the-discharge-route/): A proposed route might rise 6 feet and use 18 feet of hose. - [How to plan a continuous downhill dehumidifier drain route](https://dryspaceguide.com/products/crawl-space-dehumidifiers/guides/how-to-plan-a-continuous-downhill-dehumidifier-drain-route/): Imagine an outlet above a floor drain, with the hose crossing a raised doorway between them. The endpoint is lower, but the route is not continuously downhill. - [Where to place a humidity sensor in a crawl space](https://dryspaceguide.com/products/crawl-space-dehumidifiers/guides/where-to-place-a-humidity-sensor-in-a-crawl-space/): Decide what the humidity reading needs to tell you before choosing a place for the sensor. - [Do you need a dehumidifier in an encapsulated crawl space?](https://dryspaceguide.com/products/crawl-space-dehumidifiers/guides/do-you-need-a-dehumidifier-in-an-encapsulated-crawl-space/): An encapsulated crawl space already has an installation history. Find out what was intended to dry it before deciding that it needs another appliance. - [Dehumidifier pump not discharging: safe checks before service](https://dryspaceguide.com/products/crawl-space-dehumidifiers/guides/dehumidifier-pump-not-discharging-safe-checks-before-service/): A pump that does not discharge needs a drainage check, not an automatic replacement diagnosis. - [Dehumidifier runs but collects no water: a diagnostic sequence](https://dryspaceguide.com/products/crawl-space-dehumidifiers/guides/dehumidifier-runs-but-collects-no-water-a-diagnostic-sequence/): If a dehumidifier appears to run but collects no water, first establish where the water should be going and whether the controls are requesting moisture removal. - [How long should a basement dehumidifier run each day?](https://dryspaceguide.com/products/crawl-space-dehumidifiers/guides/how-long-should-a-basement-dehumidifier-run-each-day/): There is no single daily runtime that demonstrates a basement dehumidifier is working correctly. - [Crawl-space dehumidifier versus portable basement unit: choosing the format](https://dryspaceguide.com/products/crawl-space-dehumidifiers/guides/crawl-space-dehumidifier-versus-portable-basement-unit-choosing-the-format/): Choose between a crawl-space-style cabinet and a portable basement unit by how it will be installed and used. - [Why cold basements reduce dehumidifier water removal](https://dryspaceguide.com/products/crawl-space-dehumidifiers/guides/why-cold-basements-reduce-dehumidifier-water-removal/): A cold basement can reduce a compressor dehumidifier’s water collection without proving that it has failed. - [How to estimate a dehumidifier electricity bill from measured usage](https://dryspaceguide.com/products/crawl-space-dehumidifiers/guides/how-to-estimate-a-dehumidifier-electricity-bill-from-measured-usage/): Use a measured kWh total and an observation period to estimate running cost. - [Building a dehumidifier maintenance schedule from the manual](https://dryspaceguide.com/products/crawl-space-dehumidifiers/guides/building-a-dehumidifier-maintenance-schedule-from-the-manual/): Build the maintenance calendar from the manual supplied for the exact model. - [What humidity setting should you use in a crawl space?](https://dryspaceguide.com/products/crawl-space-dehumidifiers/guides/what-humidity-setting-should-you-use-in-a-crawl-space/): A crawl-space display tells you about a sensor, not every bay under the home. - [What humidity setting should you use in a basement?](https://dryspaceguide.com/products/crawl-space-dehumidifiers/guides/what-humidity-setting-should-you-use-in-a-basement/): For routine basement control, start by evaluating a 50% RH setting and a separate hygrometer reading. - [How to size a basement dehumidifier for your moisture load](https://dryspaceguide.com/products/crawl-space-dehumidifiers/guides/how-to-size-a-basement-dehumidifier-for-your-moisture-load/): Before replacing a basement dehumidifier with a larger one, describe why the current arrangement is failing. - [How to size a crawl-space dehumidifier beyond square footage](https://dryspaceguide.com/products/crawl-space-dehumidifiers/guides/how-to-size-a-crawl-space-dehumidifier-beyond-square-footage/): The useful output of crawl-space sizing is a description of the load and enclosure, not a pint number obtained from floor area alone. - [Crawl-space dehumidifier fit: dimensions, access and clearances](https://dryspaceguide.com/products/crawl-space-dehumidifiers/guides/crawl-space-dehumidifier-fit/): A cabinet can fit through a hatch and still be impossible to use in the chosen position. - [Pump vs gravity drain for a crawl-space dehumidifier](https://dryspaceguide.com/products/crawl-space-dehumidifiers/guides/pump-vs-gravity-drain/): Sketch the hose route before choosing pump or gravity drainage. - [Dehumidifier capacity ratings: saturation, AHAM and DOE explained](https://dryspaceguide.com/products/crawl-space-dehumidifiers/guides/dehumidifier-capacity-ratings/): Before comparing pint ratings, write the test temperature and relative humidity beside each number. ## Pages - [Compare](https://dryspaceguide.com/products/compare/) - [Favorites](https://dryspaceguide.com/favorites/) - [Favorites](https://dryspaceguide.com/favorites/) - [Contact the editorial desk](https://dryspaceguide.com/contact/): Have a correction, a source we should review, or a question about an article? 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