# 09 Accord heat temp changes with mix selection **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** honda, accord\ **Created:** [October 27, 2011, 7:37pm UTC](https://community.cartalk.com/t/09-accord-heat-temp-changes-with-mix-selection/69007 "2011-10-27T19:37:01Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![sarek1](https://avatars.discourse-cdn.com/v4/letter/s/a87d85/32.png) [@sarek1](https://community.cartalk.com/u/sarek1)\ **Post date:** [October 27, 2011, 7:37pm UTC](https://community.cartalk.com/t/09-accord-heat-temp-changes-with-mix-selection/69007/1 "2011-10-27T19:37:01Z")
I have noticed in my 2009 Honda Accord that the temperature of the heated air coming out of the dash vents drops when I select “all dash” as opposed to “mix dash and floor.” It’s significant enough to notice as it blows on my hands. But the dealer says the difference is within 5 degrees, which is within specs, so they won’t do anything. I don’t think I can measure it myself since I can’t fully jam my thermometer in the dash vent, so any reading would be contaminated by ambient temperature. Anyone else experienced this? ---
**Author:** ![chaissos](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/chaissos/32/2347_2.png) [@chaissos](https://community.cartalk.com/u/chaissos)\ **Post date:** [October 27, 2011, 8:19pm UTC](https://community.cartalk.com/t/09-accord-heat-temp-changes-with-mix-selection/69007/2 "2011-10-27T20:19:46Z")
Is it possible that the slower air speed at the dash is allowing the whole air plenum to get warmer, and with a slower air, even the same temperature will feel different at different speeds. That’s the entire theory of having a ceiling fan in your house. Moving air “feels” cooler…the faster it’s moving, the cooler it feels - regardles of the actual temperature. ---
**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\ **Post date:** [October 27, 2011, 9:43pm UTC](https://community.cartalk.com/t/09-accord-heat-temp-changes-with-mix-selection/69007/3 "2011-10-27T21:43:47Z")
If your car is like mine, “all dash” is actually the defroster setting. I can’t set mine on that setting without the AC coming on in the background to remove moisture. Overall I love me car, but that’s a quirk that I’ve always hated. ---
**Author:** ![sarek1](https://avatars.discourse-cdn.com/v4/letter/s/a87d85/32.png) [@sarek1](https://community.cartalk.com/u/sarek1)\ **Post date:** [November 6, 2011, 5:29pm UTC](https://community.cartalk.com/t/09-accord-heat-temp-changes-with-mix-selection/69007/4 "2011-11-06T17:29:57Z")
Chaissos: My phenomenon occurs independent of fan speed. The temp changes with the switch between [face] and [face/feet]. I don’ t believe the change in volume of air coming out the dash vents matters since I don’t notice this temp change at the floor vents. Mtn Bike: By “all dash”, I’m referring to the setting where most of the air comes out of the dash vents (picture with arrow to face).