The point is, there are tradeoffs to keeping it on even when the AC is off. That post discusses them. In many cases

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Jul 4, 2024
5:29:16pm

supertux Nice.

(maybe even most cases) it's not beneficial to keep the fan blowing more than 30 seconds after the AC turns off.

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supertux

Previous username: Hot Extrusion
Bio page: supertux
Joined: Nov 29, 2012
Last login: Jul 7, 2024
Total posts: 56,686 (17,674 FO)

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Messages

Author

Time

Don't waste all that cold air in your ducts, switch your fan to constant so that

BYUFBDAD

Jul 4, 4:54pm

I set mine to do that about a month ago hoping it would help balance the temps better across the house. I think it might

Mike Honcho

Jul 4, 5:01pm

in high humidity areas it might introduce more humidity, as the coils aren't

BYUFBDAD

Jul 4, 5:09pm

My ducts are in the attic. Running constantly pulls heat from attic and warms the house. My ecobee learns how long it

supertux

Jul 4, 5:07pm

Seems like modern smart thermostats could keep the fan on for a few minutes after the AC cycles off

Skeptical Optimist

Jul 4, 5:09pm

They do

supertux

Jul 4, 5:09pm

Going through my ecobee settings and I don't see anything about it - does it just do it

Skeptical Optimist

Jul 4, 5:11pm

I don't see it on my Ecobee either.

BYUFBDAD

Jul 4, 5:12pm

It's called "Cool Dissipation Time" and it is defaulted to Auto. But you can change it to a specific time.

supertux

Jul 4, 5:14pm

Actually it looks like the default is 30 seconds. I have mine set to Auto.

supertux

Jul 4, 5:16pm

I'd bet after 30 seconds the air coming out is still blowing cold, but your fan

BYUFBDAD

Jul 4, 5:18pm

When set to Auto the thermostat detects the optimal dissipation time and uses that.

supertux

Jul 4, 5:22pm

Interesting, mine doesn’t have that setting

Skeptical Optimist

Jul 4, 6:04pm

It's possible that newer models didn't let you change it. Or maybe there's another setting you have to enable to see it

supertux

Jul 4, 6:54pm

Figured it out - you have to have configure staging set to manual for it to show up

Skeptical Optimist

Jul 4, 7:42pm

I had seen that somewhere. Seems weird that that is required.

supertux

Jul 5, 9:00am

Mine either

RUNBYU1

Jul 4, 7:01pm

Another cool feature of modern thermostats

NanoFab Coug

Jul 4, 5:41pm

My ecobee doesn't do that. At least not automatically. It does have a setting to tell it to run the fan a minimum number

supertux

Jul 4, 5:46pm

honeywell does

NanoFab Coug

Jul 4, 5:48pm

Yeah I have a couple of sensors for mine. The main benefit is that my thermostat is in a hallway that gets almost

supertux

Jul 4, 5:52pm

Have you tried Airtap AC Infinity?

RUNBYU1

Jul 4, 7:08pm

Looks interesting. Getting power to it seems like it would be tricky.

supertux

Jul 4, 7:15pm

Only if you don’t have an outlet within 10 feet of a vent in that room

RUNBYU1

Jul 4, 7:23pm

Yeah my vents are all in the ceiling. I'd prob have to find a way to run the power up into the attic.

supertux

Jul 5, 8:59am

so just using your lungs instead of the $5 filter. 😉

BYUFBDAD

Jul 4, 5:11pm

That doesn’t make sense with modern AC units

kotacoug

Jul 4, 5:11pm

Well, I think it's worth a try to see if there's a noticeable difference, for me

BYUFBDAD

Jul 4, 5:17pm

It isn't universally recommended. There are pros and cons.

supertux

Jul 4, 5:19pm

that's exactly what I said in my post. And your link compares keeping it on

BYUFBDAD

Jul 4, 5:21pm

The point is, there are tradeoffs to keeping it on even when the AC is off. That post discusses them. In many cases

supertux

Jul 4, 5:29pm

These are the downsides listed on your link

BYUFBDAD

Jul 4, 5:46pm

Correct

supertux

Jul 4, 5:47pm

It sounds like you re very pro "run it in constant mode" and have already made

NanoFab Coug

Jul 4, 5:48pm

I see what you're trying to do here, but it's not similar. Nice try.

BYUFBDAD

Jul 4, 5:50pm

It’s different, sure

NanoFab Coug

Jul 4, 5:51pm

I think what's happening here is those of us who have spent more time than we care to admit looking into these things

supertux

Jul 4, 5:54pm

No, this seems to be personal with NanoFab Coug.

BYUFBDAD

Jul 4, 5:59pm

I don’t know what you’re talking about. That’s pure coincidence.

NanoFab Coug

Jul 4, 6:03pm

Called airwave on nest

Cougar McGregor

Jul 4, 5:55pm

*airwave

supertux

Jul 4, 5:56pm

Thanks

Cougar McGregor

Jul 4, 6:50pm

My AC system:

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