Crawl space ventilator system

Details Crawl space ventilator system Crawl space ventilator system

1989-09-06

1990-09-04

Joyce, Harold

98 4204, F24F 7007

Patent

active

049534505

ABSTRACT:
A method, system and apparatus for venting the foundation of a building having a space provided below the floor of the building. Such space is ventilated by exhausting air from the space and drawing air into the space, only after sundown and before sunrise. In the preferred form, a photocell is utilized to set the system into operation by energizing a timer switch which, after it becomes dark as determined by such photocell, a ventilating fan is actuated for a predetermined time and for a predetermined time interval before sunrise.

REFERENCES:
patent: 4829882 (1989-05-01), Jackson

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