Right you are. All manual thermostat controls on direct blow A/C units refer strictly to the cooling section of the unit. If you have a heat pump, it would control that also. Your heat strip is either on or off. You will find that they do not provide a lot of heat, but will take the chill out of the air.
I had a couple of roof air units in a motor home for 5 years and found the heat strips to be just north of worthless for heating applications.
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lewster
Solar Tech Energy Systems, Inc.
Victron Solar Components and Inverters, Zamp Solar Panels, LiFeBlue and Battle Born Lithium Batteries, Lifeline AGM Batteries
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