2010 - Volume #34, Issue #4, Page #40
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Furnace Filter Monitor
You won't have to guess when to change furnace filters with this new device that measures the pressure differential across filters, automatically letting you know when the filter needs to be changed. Once a filter is plugged, an audio chirp goes off once per minute and a light comes on. Maximizes filter life and ensures your furnace will never again have to force air through a plugged filter.Contact: FARM SHOW Followup, Ekern Enterprises, Inc., 103 North Wind St., Flandreau, S. Dak. 57028 (ph 605 573-2880)
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