re: Riddle me this: why is AC 73 comfortable but Heat 73 is too hot

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No it isn’t. You’re probably just fat.

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There ain't no probably about it.

I used to joke with my stepmother about how she put the thermostat at 68 in the summer and 78 in the winter when I put it at 68 in the winter and 78 in the summer.

I mean, why is 68 okay in the summer but not the winter?

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This! Wow… Dude…thanks, this makes common sense

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FIFY

Humidity: cold = less moisture= dry skin, warm = more moisture= moist skin. At least for me dry skin is AWFUL…

Edit. Craw beat me to it.

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I fully expect a good amount of roasting for this but…why is AC 73 comfortable but having the heater on 73 too hot??

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Humidity. As you heat the air up, relative humidity decreases unless you add more moisture into the air. It's why places where you primarily heat your house often have humidifiers as part of the air conditioning system.

Because the air register is blowing right on you

I’ve noticed this as well. Heat on at 72 is too cold. 73 is too hot. Guess it’s because I’m old.

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Thermostat set to 73 on heat isn't pumping out 73 degree air, it is pumping out 90 degree air until the overall ambient temp at the thermostat is 73. Having 90* air getting pumped out of your vents feels hotter than when it's 55 degree air trying to maintain 73 in cooling mode.

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Actually the air temperature coming out the grilles when the unit is running is 50, 60, or so degrees more than the RA temperature. It could easily be 120 degrees or more on a gas furnace.

A heat pump is much less, around 90 degrees.
A unit with just electric heat? Not sure.