While air cleaners, ventilation and UV treatment systems keep indoor air clean, proper humid-ification is needed to control relative humidity(RH) levels in the home, minizing unhealthy airbonee pollutants.  Too little humidity leaves the body vulnerable to infections, and can cause damage to the homes furnishings.  Inversely, too much humidity creates ideal breeding grounds for mold, mildew and dust mites.

Understanding Humidity

Humidifiers operate by the principle that vapor is created when warm dry air is blown over a water-soaked area(flow-through unit).  As the vapor circulates, the relative humidity rises in the living areas.

Relative Humidity - The among of moisture present at a given temperature versus the maximum amount of humidity the air is capable of holding at that same temperature.  If relative humidity  is 35% at a given temperature, the air is 35% saturated with water.

Dew Point - The temperature at which moisture in the air will condense into water droplets.  To prevent condensation, dew point must     be below the temperature of the coldest surface in the house.  As the temperature of home surfaces (typically windows) drops below dew point, condensation forms.

Mold Prevention - The trick to preventing condensation within a home is not moisture elimination, but moisture control.  The majority of mold growth in homes is not caused by humidified air, but sanding bulk water; usually around a cold surface (i.e. windowl).  According to ASHRAE standards, mold can develop when humidity levels are above 60%.  Honeywell humidity controls are designed         to inhibit relative humidity from exceeding this level, which minimizes the risk of mold growth.

Infiltration - Cold air holds less moisture than warm air.  Without adequate humidification, the natural infiltration of cold, dry, outside air into a home will lower the indoor relative humidity far below the comfort level.  During the winter months, indoor relative humidity can drop below 6% as a result.  Too little humidity can damage wooden assets in the home, including hardwood floors, staircases, furniture and musical instruments.

HE225B Bypass flow-through humifiers provide the most flexible installation options, allowing for mounting on either the supply plenum or return duct. A bypass duct then connects the unit to the duct opposite of the unit installation. When the funace blower moves air into the supply, higher pressure is created than in the return duct. As these two pressures equalize, air is sucked from the supply, trhough the humidifier's soaked clay media pad, and intor the ruturn duct for recirculation through the furnace and out into the living areas.

HE365 Powered flow-through humidifiers work best with variable speed, multistage furnaces, which reduce airflow during extended runtimes when only the first stage of heating is operational. The HE 365 comes with its own internal fan which accts as a booster to the furnace blower during these reduced airflow cycles. Powered flow-through units do not require a bypass duct and can be installed in small, narrow areas of the supply duct.

 

H1008 Automatic Electronic Controls offer "set-it and forget-it' programming. Once properly adjusted, the H1008 automatically adjusts humidity levels based on outdoor temperature or furnace run time. No user interaction is required.

(Included with Units)