It's complete BS. If that was actually a problem, then the system wouldn't let you do that.


When you have a heat pump the thermostat that controls it is a 2 stage thermostat. The first stage controls the heat pump and the second stage controls the heat strips. The heat pump operates off the first stage and if it can not produce enough heat and the indoor temperature falls below the thermostats set point by a certain amount the second stage ...

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