26 Jul '13, 9am

All About Dehumidifiers by @MartinHolladay in his @GBAdvisor blog

The average run time for the dehumidifiers in the study was 8.9 hours per day. Mattison wrote, “Because direct-drain units were not limited by tub size, they operated for longer hours, with average active run time of 11 hours per day for direct-drain units, compared to 8.1 hours per day for manually emptied units.” On average, the dehumidifiers used 459 watts when running. The range was from 375 watts to 964 watts. The average metered electricity consumption was 4.2 kWh per day (5.6 kWh per day for direct-drain units and 3.7 kWh per day for manually emptied units). On average, the homeowners enrolled in the study operated their dehumidifiers for eight months per year (2,160 hours per year). About half of the homeowners left their dehumidifiers on year round. The measured energy factor (EF) ranged from 0.2 to 2.1 liters/kWh, with an average of 0.8 liters/kWh. The measured E...

Full article: http://www.greenbuildingadvisor.com/blogs/dept/musings/al...

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