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Replacing an old mini fridge
(lemmy.world)
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this post was submitted on 05 Oct 2024
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The manufacturer(s) will publish an energy guide label with their estimated kWh/year energy usage for any given model. Using your Kill-a-Watt or whatever energy monitoring device you have, it should be fairly trivial to measure a day's worth of energy consumption from your old fridge and multiply it by 365 to get a yearly figure.
Then just see if A < B.
I'll start with among the cheapest and junkiest available, the Avanti RA31B3S (which has a separate freezer compartment). The manufacturer claims it burns 320 kWh/year.
Yeah that’s kinda what I am doing. If I’m using this energy monitor thing right, the fridge is on Day 9 and has used 20.32 kWhs
If that pattern holds then a modern one should be ~4x more energy efficient...
Also bear in mind that there is only a single evaporator in that thing, so it's not a case of "just the freezer isn't working." The refrigeration system in there has partially failed, wholesale, and you only notice it first in the freezer because that's the coldest compartment and stuff melting is a very obvious tell. That fridge is probably working its compressor constantly in a vain little mechanical attempt to reach its temperature setpoint, which it will never accomplish because it's lost compression or has a slow refrigerant leak or whatever. So it's consuming even more electricity than it otherwise would, and replacing it with just about anything would be a net improvement.
Yeah that’s something another commenter mentioned. Thanks for the math. I think it’s time to say goodbye to this old thing…
Maybe I’ll try this on my big fridge next. It’s getting close to 20 years old itself but functions fine.
If you want a good laugh, or possibly just transform into a pillar of salt, you could stick a temperature logger in your fridge to see if it's actually holding its setpoint (your big one, that is, not the mini fridge).
I did that in our office fridge a few weeks ago just for a lark. The results were... not good.
I know this is random, but I like your writing style. You manage to throw in flourishes of language and colour, even dramatic biblical references, when talking about nothing more than a broken fridge.