San Francisco : Architect and Engineer, Inc · leaf 153
GRAVITY TYPE GAS FURNACE MAY, 1941 adequate supply of air for furnace operationis assured. Another advantage of forced air units is theutilization of filters to remove dirt, dust and … GAS FLOOR FURNACE pollen which are contained in air and are com-mon causes of nose and throat irritation. The best has been saved for the last—theultimate in gas comfort service—a year-aroundair conditioning unit which makes possible apositive control of temperature and humidity from a cold winter…
Architecture · Building
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