Crawl space ventilation system

Details Crawl space ventilation system Crawl space ventilation system

1988-10-14

1989-10-31

Tapolcai, William E.

Automatic temperature and humidity regulation

Humidity control

236493, 98 331, F24F 1312

Patent

active

048771821

ABSTRACT:
An automatically controlled, responsively to minimum temperature and humidity levels, ventilation system for crawl spaces beneath a house or other structure includes at least one intake unit and one exhaust unit. The intake unit includes at least one solenoid-operated ventilator and a temperature sensing device positioned to sense the temperature of outside air. The exhaust unit includes at least one solenoid-operated ventilator, a fan, and a remote humidistat positioned to sense the humidity level at a prescribed area of the crawl space. When the humidity rises above a prescribed level, the humidistat closes an electrical circuit to the thermostat. If the outside air temperature is above a prescribed level (at least above freezing), the thermostat closes the second circuit, energizing the solenoids and the fan. The solenoids cause the ventilators to open and the fan forces air through the crawl space to reduce moisture levels and dissipate any build-up of Radon gases beneath the structure.

REFERENCES:
patent: 2733649 (1956-02-01), Le Barron
patent: 3368756 (1968-02-01), Edwards
patent: 4178841 (1979-12-01), Frank et al.
patent: 4251026 (1981-02-01), Siegelebal
patent: 4290554 (1981-09-01), Hensley
patent: 4407187 (1983-10-01), Horney
patent: 4428529 (1984-01-01), Bentsen
patent: 4715532 (1987-12-01), Sarazen et al.

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