How To Look At A House
McGarry and Madsen's home inspection blog for buyers of
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How do I set a humidistat in Florida?
Sunday, January 27, 2019
The humidistat is essentially a gatekeeper installed ahead of the thermostat, which will only allow the thermostat to work when the humidity exceeds the desired percentage—and the usual setting is around 55%. If the humidity exceeds the humidistat setting, then the thermostat is allowed to turn on the system when the room temperature exceeds its own setting, which is recommended to be about 78º to 80º F. Newer thermostats include a humidistat function, like the one shown here.
The energy savings is provided when the indoor temperature exceeds what you consider to be a comfortable idoor temperature, but the humidity is still low, and the system will not be activated. Turning the dial to far right to “ON” will override the humidistat and allow the thermostat complete control.
Turning the dial to the far left to “OFF” will do the same thing except that, if the thermostat is not battery-powered, it will shut off the thermostat—which you definitely don’t want and, again, that is only for a thermostat without batteries. Also, if you set the thermostat too high (above 80º), the system may not turn on when needed to lower the humidity.
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To learn more about heating and air conditioning systems, see these other blog posts:
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