Tiffin Motorhomes 2015 Phaeton, Owner'S Manual, Page: 118 / 158

ROUTINE MAINTENANCE
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MOISTURE MANAGEMENT
This section outlines important recommendations to manage moisture in your motorhome to avoid
moisture-related damage, such as mold. The materials and methods used to construct your motor-
home were selected in part to minimize air leakage and to create a weather tight exterior shell. How-
ever, in order to protect your investment and reduce the risk of moisture-related damage and costly
repairs, attention and care has to be taken to manage moisture inside your RV.
Note: These are only suggestions intended to minimize moisture-related issues with your motorhome.
If any concerns arise, contact Tiffin Motorhomes’ Service Department at (256) 356-0261.
Interior Care of your RV
Signs of excessive moisture can be obvious, such as water droplets forming on surfaces or wet carpet.
Conversely, signs of excess moisture can be subtle, such as condensation forming on metal surfaces.
When symptoms appear, it is important to immediately determine the cause of the excess moisture
and take appropriate corrective action to prevent moisture related damage.
Control relative humidity
Monitoring and controlling relative humidity within the motorhome is one of the most important
steps to minimize the risk for moisture-related damage. Ideally, relative humidity should be at 60% or
less. Relative humidity can be monitored utilizing a portable hygrometer, which is a small device that
measures temperature and relative humidity.
Use exhaust fans, the air conditioner, and/or a portable dehumidifier to manage moisture inside the
RV to maintain relative humidity at 60% or less. In cold climates, relative humidity may need to be at
35% or less to avoid window condensation issues. If the motorhome is used the majority of the time
in a hot, humid climate, it may be difficult to keep relative humidity below 60%. A dehumidifier will
help, but is important to check the condensation (water) collection bucket regularly or discharge the
condensation (water) directly to a drain.
Avoid drastic thermostat setbacks
To minimize the opportunity for condensation to form on interior surfaces, maintain a comfortable
temperature in your RV, and avoid nighttime setbacks of 10 degrees or more. Drastic setbacks that
reduce the indoor air temperature quickly can increase the chance for airborne moisture to condense
on cool surfaces such as windows. If you are away from your RV for an extended number of days, it is
recommended that you do not set the temperature back without taking other measures to manage
relative humidity, including operating a dehumidifier with a continuous drain.
Manage Window Condensation