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

Posted on 12/23/22 at 11:52 am
Posted by 850SaintsGator
Pensacola
Member since Sep 2021
2354 posts
Posted on 12/23/22 at 11:52 am
I fully expect a good amount of roasting for this but…why is AC 73 comfortable but having the heater on 73 too hot??


Posted by rexorotten
Missouri
Member since Oct 2013
4572 posts
Posted on 12/23/22 at 11:53 am to
AC on 73 is miserably hot.
Posted by MrWalkingMan
31st Parallel North
Member since Aug 2010
7091 posts
Posted on 12/23/22 at 11:54 am to
Posted by Roll Tide Ravens
Birmingham, AL
Member since Nov 2015
48542 posts
Posted on 12/23/22 at 11:54 am to
Yeah, it is weird how something like 64 feels cold inside of a house but is comfortable outside. I guess it's being in the sun and all of that, but it's still weird.
This post was edited on 12/23/22 at 11:56 am
Posted by FreddieMac
Baton Rouge
Member since Jun 2010
24530 posts
Posted on 12/23/22 at 11:55 am to
Depends on what you get acclimated too. 73 AC feels cold right after the winter when we first start using it, but comfortable after 9 months at the temp.

Posted by Mahootney
Lovin' My German Footprint
Member since Sep 2008
12019 posts
Posted on 12/23/22 at 11:55 am to
Sunlight and radiant energy vs a heat sink.
Posted by armsdealer
Member since Feb 2016
11932 posts
Posted on 12/23/22 at 11:55 am to
64 is a great indoor temp. I'd kill for that year round if it didn't cost a fortune.
Posted by deeprig9
Unincorporated Ozora
Member since Sep 2012
70105 posts
Posted on 12/23/22 at 11:55 am to
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.

Posted by 850SaintsGator
Pensacola
Member since Sep 2021
2354 posts
Posted on 12/23/22 at 11:58 am to
quote:

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.


This! Wow…

Dude…thanks, this makes total sense
Posted by LNCHBOX
70448
Member since Jun 2009
86735 posts
Posted on 12/23/22 at 12:01 pm to
73 is 50 degrees hotter than the outside temp, where as in summer it's 20ish difference. No clue if that's the answer
Posted by Stevo
Baton Rouge
Member since Sep 2004
12052 posts
Posted on 12/23/22 at 12:02 pm to
quote:

AC 73 comfortable


That's not comfortable. too hot.
Posted by djangochained
Gardere
Member since Jul 2013
19054 posts
Posted on 12/23/22 at 12:09 pm to
68 cool

65 heat
Posted by LSUBoo
Knoxville, TN
Member since Mar 2006
102488 posts
Posted on 12/23/22 at 12:13 pm to
Both too hot in my opinion... but 73 is tolerable when it's 90+ out and just a waste of money when it's below freezing.
Posted by LegendInMyMind
Member since Apr 2019
65700 posts
Posted on 12/23/22 at 12:15 pm to
The air in Winter is drier.
Posted by grizzlylongcut
Member since Sep 2021
12381 posts
Posted on 12/23/22 at 12:16 pm to
quote:

AC on 73 is miserably hot.


No it isn’t. You’re probably just fat.
Posted by CrawDude
Baton Rouge
Member since Apr 2019
5594 posts
Posted on 12/23/22 at 12:16 pm to
quote:

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.

Good answer, and humidity of the air also plays a role - warmer air from the furnace or heat pump will always be drier (low relative humidity) whereas cooler conditioned air from the AC will have a much higher moisture content (higher relative humidity).
This post was edited on 12/23/22 at 1:44 pm
Posted by Bestbank Tiger
Premium Member
Member since Jan 2005
75246 posts
Posted on 12/23/22 at 12:19 pm to
20 degrees cooler than outside

40 degrees hotter than outside
Posted by htran90
BC
Member since Dec 2012
31354 posts
Posted on 12/23/22 at 12:21 pm to
90 degree heat dries up the air, becomes uncomfortable
Posted by tigeraddict
Baton Rouge
Member since Mar 2007
13212 posts
Posted on 12/23/22 at 12:25 pm to
Heat is dryer than A/C

Posted by Jim Rockford
Member since May 2011
102133 posts
Posted on 12/23/22 at 12:26 pm to
quote:

Heat 73 is too hot


Assumes facts not in evidence.
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