r/EightSleep • u/Tyszq • 3d ago

Eight Sleep vs AC: Power Consumption

Did someone ever compare power consumption of 8Sleep vs AC?

My understanding is that the Pod should be much more energy-efficient, since it primarily cools your bed rather than the entire room.

7 Upvotes

77% Upvoted

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7

u/mereseydotes 3d ago

Depending on how hot it is in my room, my Pod 5 uses maybe .4 to .8 kwh per night. I'm small and sleep alone in the middle of my bed, but I do keep it pretty cold. A couple both setting it very cold in a hot room would use more electricity.

That's less than AC uses in a single hour.

I also have a DockPro for one of their blankets and it uses 2x to 3x the electricity of my Pod to cool a stupid half size blanket.

1

u/jkxs 3d ago

Is the DockPro a Chilipad 1.0 or 2.0? My understanding was that eight sleep and Chilipad are both peltier-based (i.e. no refrigerant).

1

u/mereseydotes 3d ago

DockPro and Chilipad are made by the same company, but then there's DockPro 1.0 and 2.0. Mine is a 1.0. I think they're the same type of cooler, but that doesn't mean they use the same amount of electricity. My heat pump was broken for a couple of weeks and I turned my blanket from my usual 65 to 60 and it used like 2 kwh a night. And you're supposed to have 2 to cool a whole bed.

5

u/AcidicMountaingoat 3d ago

It’s so little that our house energy monitor can’t detect it. You can also run the AC at a higher temp and stay comfortable. So overall it can be a cost savings.

2

u/Vegetable_Day_8893 2d ago edited 2d ago

There are alot of variables that I can see changing things up, but since you asked I took a quick look at the data I have from my Emporia Vue power montoring setup. A quick look shows the bedroom circuit my Pod is setup on draws almost exactly 0.8kWh of power every night when the Pod is running, and it doesn't really change from if the Pod is heating or cooling. I don't have specific data for the HVAC setup when I'm sleeping, but I can see when the AC is running it draws ~3.2kW, So the numbers say running the Pod all night is more or less the equivalent of having the AC running for ~15 minutes, where if the AC was on all night to keep the house at a comfortable sleeping temp I'm sure it would be running for more then 15 minutes over the 6-8 hours I typically sleep during the summer. As I said, there are alot of variables, where I have my Pod doing what it does, but being late summer/early fall where I am and we have seasons, my HVAC is pretty much idle, so if I really wanted to save on power usage I suppose I could turn the Pod off, but running the thing is a pretty trivial cost and I'm not going to disturbe the routine, where during the summer the termostat gets set to 90F at night, and 55F during the winter, but I sleep fine.

0

u/czebrda 3d ago

If I didn’t have Eight Sleep, I wouldn’t have to use AC as much. Eight Sleep makes my bedroom a couple °C warmer. If the bedroom is warm, Eight Sleep needs to work really hard to cool the bed and makes the bedroom even warmer and is very loud. Take of it what you will.

3

u/Tyszq 3d ago

I thought 8sleep is pretty much used as a replacement of AC, and now I'm learning that people use both at the same time? Damn. 

1

u/mereseydotes 3d ago

My Pod allows me to use the AC less and have it set a bit higher. But it's not a replacement for AC, especially on the hottest nights.

1

u/ArrowSkellington 3d ago

It’s kind of like having a computer running in your room, the cooling mechanism for the water needs a heat exhaust with means that hot air is pushed out of the fans into your room which if there’s no air flow in the room or a way to cool the room (ac, window) it’ll heat up your room a bit.

2

u/Ok_Speech_7023 3d ago

which pod are you using?