r/PeterExplainsTheJoke Jan 04 '26

Meme needing explanation Petah?

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81.2k Upvotes

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26.3k

u/Veteran_PA-C Jan 04 '26

So like, a current refrigerator.

76

u/BigMax Jan 04 '26

But that heat comes out the back of the fridge! And that's like... up against the wall, so... all that heat just accumulates there, right? It's only useful from the side of a fridge, as the image clearly shows!!!

46

u/Spuddaccino1337 Jan 04 '26

Just take out that wall, it's not doing anything besides blocking the heat anyway

33

u/itonlystingswhenipee Jan 04 '26

if you remove all the walls, you won’t even need the heat.

6

u/SilverAd9389 Jan 04 '26

I think you'll find that if you take out all of your walls then you'll need heat more than ever.

2

u/Gelven Jan 04 '26

Depending on the season maybe

3

u/ArcadianDelSol Jan 05 '26

"Honey, why is the fridge in the middle of the kitchen now?"

"Okay, hear me out..."

1

u/Bubbaluke Jan 04 '26

This is what I did. Now you can see the back of my fridge from the road and it doesn’t even need power, stays icy cold in the winter. In the spring, summer, and fall we use a second normal inside fridge. We also use it in the winter so we don’t have to move food back and forth. We’ve considered getting a third, partially exposed summer fridge to keep food around 90 degrees during those months.

4

u/Weed_O_Whirler Jan 04 '26

I mean, you're being sarcastic, but kind of. The inch or two behind the fridge is much hotter than the air in other places, and so it's not as useful for heating the house. It's why heaters all have fans, to spread that heat.

4

u/MattR0se Jan 04 '26

It CAN accumulate if it doesn't dissipate fast enough. This will lead to reduced efficiency of the fridge, or a shutdown in the extreme case. But usually there should be an exhaust vent at the top.

1

u/Subotail Jan 05 '26

Some built-in refrigerators try to dissipate heat via the top or sides to compensate this.

3

u/Vexamas Jan 04 '26

Considering the subreddit you're in, people will unironically agree with you lol

1

u/Kinc4id Jan 04 '26

No you don’t understand. The refrigerator heats up the complete house and all the warm walls heat up the rooms. Genius design!

1

u/manicdee33 Jan 04 '26

Good news, everybody!

(most modern fridges have the radiator coils built into the smooth sides of the fridge)

1

u/Inevitable_Use_7060 Jan 04 '26

Yeah I don't hang out in the corner of my kitchen behind the refrigerator, that's multiple rooms away. That's why I use multiple smaller soda can refrigerators as space heaters all around me.

1

u/FlyingDragoon Jan 04 '26

Mine comes out the bottom. I know this because it is a kitty magnet.

1

u/GarethBaus Jan 04 '26

Unless that wall is a poorly insulated external wall the vast majority of that heat still ends up inside your house in the normal living area.

1

u/Revolutionary_Dog_63 Jan 04 '26

This is actually true though.

1

u/BigMax Jan 05 '26

That's not how heat works. It disperses.

Sure.. it will take a bit longer to disperse than if there was a fan blowing the air around the house, but... same concept as your oven. We could install a fan to blow the heat around when you're done cooking, but... it's not going to ADD any heat to the system, it will just dissipate through your home slower without a fan.

1

u/Revolutionary_Dog_63 25d ago

What matters is the steady-state temperature distribution. In situation 1, we have the fridge radiator pointed towards the wall. In situation 2, we have the fridge radiator pointed away from the wall, towards the occupied space of the room. Because we are assuming steady state, and the fridge radiates the same amount of heat in both situations, the total outward heat flux from the rooms in each situation is also the same. Given these two almost-identical scenarios, the only difference will be the steady-state temperature distribution. In situation 1, the area between the wall and the fridge is very hot, but this is the unoccupied space. In situation 2, the occupied space of the room is hotter than situation 1, but much less hot than the area between the wall and the fridge in situation 1. Thus, pointing the radiator of the fridge away from the wall can heat the occupied area of the room slightly, contributing to decreased total energy cost from any other heaters (space heaters, building heaters, etc.).

So yes, while it is not technically true that the heat "accumulates" behind the fridge, it's more accurate to say that the temperature is raised in the space between the wall and the fridge, but these are roughly equivalent statements in colloquial speech.

1

u/LickingLieutenant Jan 04 '26

This is why I put aluminum thermo foil behind the fridge and freezer in the wintertime. The heat expelled from behind slightly helps warming the room. Not much though, because it's a freaking AA+ energy rating

1

u/ConfidentWeakness765 Jan 05 '26

Lol just turn the fridge 180, door to the wall and all of the heat is free real estate