Aprilaire 1750A-1770A User Manual
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Humidity
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PLEASE LEAVE THIS MANUAL WITH THE HOMEOWNER
Thank you for your purchase of the Aprilaire
®
Dehumidifier. Your dehumidifier is designed to remove humidity from your home, maintaining the
humidity at a comfortable level and reducing the unwanted effects of high humidity. Use your Aprilaire Dehumidifier to control the humidity that
comes into the home from opening doors and infiltration (i.e. outdoor air entering through the building envelope). You can reduce the amount of
humidity that enters the home by closing windows, doors, and fireplace flues when the outdoor humidity is high and by drying clothes outside.
Whirlpool tubs and saunas will also increase the amount of humidity in the home. Direct exhaust from kitchen vents and bath fans is the best
means of controlling humidity due to cooking and showers/baths. Your Aprilaire Dehumidifier is not designed for pool rooms or to eliminate or
reduce condensation on windows in the winter and works best when the indoor temperature is above 65°F (18°C).
comes into the home from opening doors and infiltration (i.e. outdoor air entering through the building envelope). You can reduce the amount of
humidity that enters the home by closing windows, doors, and fireplace flues when the outdoor humidity is high and by drying clothes outside.
Whirlpool tubs and saunas will also increase the amount of humidity in the home. Direct exhaust from kitchen vents and bath fans is the best
means of controlling humidity due to cooking and showers/baths. Your Aprilaire Dehumidifier is not designed for pool rooms or to eliminate or
reduce condensation on windows in the winter and works best when the indoor temperature is above 65°F (18°C).
WHOLE HOME DEHUMIDIFICATION
The Aprilaire Dehumidifier controls the humidity level in your entire home. A powerful blower inside the dehumidifier draws air into the cabinet,
filters and removes moisture from the air, and then discharges the dry air to the home. Inside the cabinet, a sealed refrigeration system removes
moisture by moving the air through a series of tubes and fins that are kept colder than the dew point of the incoming air. The dew point is
the temperature at which moisture in the air will condense, much like what occurs on the outside of a cold glass on a hot summer day. The
condensed moisture drips into the dehumidifier drain pan to a drain tube routed to the nearest floor drain – no need to empty a tub every day.
After the moisture is removed, the air moves through a second coil where it is reheated before being sent back into the home. It is normal for the
air leaving the dehumidifier to be warmer than the air entering the dehumidifier.
filters and removes moisture from the air, and then discharges the dry air to the home. Inside the cabinet, a sealed refrigeration system removes
moisture by moving the air through a series of tubes and fins that are kept colder than the dew point of the incoming air. The dew point is
the temperature at which moisture in the air will condense, much like what occurs on the outside of a cold glass on a hot summer day. The
condensed moisture drips into the dehumidifier drain pan to a drain tube routed to the nearest floor drain – no need to empty a tub every day.
After the moisture is removed, the air moves through a second coil where it is reheated before being sent back into the home. It is normal for the
air leaving the dehumidifier to be warmer than the air entering the dehumidifier.
Model 1750A/1770A Dehumidifier
Owner’s Manual
Installed by: _________________________________ Installer Phone: _______________________ Date Installed: _______________