I have an older (90's) 22 cuft top freezer fridge and have a question regarding its running efficency. When the temperature in the house is in the low 70's or below the fridge doesnt run as much. But when it hits about 78 or above it seems to run almost continuiously except for when its in the defrost mode. The inside of the fridge and freezer stays cold and I dont have a problem with it getting warm inside. It doesnt seem like its a operation problem for the cooling system but more of a issue from heat gain / cold loss. I was just wondering if this is normal operation for this vintage fridge
older fridge efficency?
Posted 27 March 2013 - 12:03 PM
Why not just ask us the meaning of life ?
This is a really tough one
Fridges do loose just about everything over time
just like everything else it just wears out
Advancements in fridgeoligy reduce the energy needed to run the fridge .
Sometimes these "advancements " make the fridge expensive to buy ,or repair
so you have to ask yourself "how much extra energy is my old fridge using per month " ?
let's guess ....$5.00 ....5x12month = $60.00 per year ...... A new regular fridge is around $700.00
so 60 /700 = 11.6 years , until you break even , if there are no repairs , with the way fridges are made today there's a good chance the replacement fridge will not even be around that long
How much does the running bother you ?
would you like a new fridge ?
do you have the money right now to replace ( please don't use credit , i beg of you !)
should you just wait for a major breakdown and take the repair money's and replace instead
Posted 27 March 2013 - 12:19 PM
Just curious if this is "normal" operation. You know like the telephone joke "Is you fridge running? You better catch it!" I am not looking to replace it until it dies and the extra running doesnt bother me. I would think the only reason its running more is because of the heat gain from the higher ambient temperature, not because the refrigerant system cant keep it cold.
Posted 27 March 2013 - 12:48 PM
... It doesnt seem like its a operation problem for the cooling system
won't know for sure until we see a picture of the frost pattern of the Freezer Evaporator Coils
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Posted 27 March 2013 - 01:17 PM
the problem is most likely a loss of compression in the compressor
this happens after years and years of use
think of it like this
you(I) have a new car , you have a steep mountain that you drive up once a week
you keep the same car 30 + years and drive it 321,234 miles
you (I) now have to keep the gas(diesel) petal to the floor on parts of the mountain just to keep up with traffic
there is nothing a machanic can put his finger on as a reason why the loss of power on steep hills
it runs just great , like it always did
Is there something wrong with the car ?
sure there is
should i fix it ............
PS: the $2,000.00 car needs a $6,000.00 engine !!
should i fix it ?
Edited by Cactus Bob, 27 March 2013 - 01:29 PM.
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Posted 27 March 2013 - 01:44 PM
Understood. Would the frost pattern tell if it was a compressor problem or possibly a low charge problem?
Posted 27 March 2013 - 02:13 PM
frost pattern will tell you if your low on freon
but I do not feel your problem is freon related
Freon tends to expand when temps go higher and reduce volume when it's cold
if you where low on freon the fridge would run a lot or not even cool properly when room temps fell
work better or even correctly when room temps where higher
a low charge may also make the defrost not work properly because of where the defrost thermostat is mounted, and your system would be freezing up
PS: A weak compress will still have a good frost pattern , in most cases
Edited by Cactus Bob, 27 March 2013 - 02:18 PM.
Posted 28 March 2013 - 08:16 AM
Just a thought. Could it be overcharged? I know the system only holds around 6 oz's. I bought the fridge used from a small appliance dealer a few years ago and he had fixed something that required it to be recharged. The compressor looks original and he soldered in a line tap. Not sure what the original problem was.
Posted 28 March 2013 - 11:23 AM
I will see if I can get a picture. Have to unload the freezer to get the panel out. Probably needs cleaned out anyhow.
Posted 28 March 2013 - 11:41 AM
to check for overcharge
make sure compressor has run for at least 10 mins with the door closed and is down to normal temps
look at the larger pipe or line going into the compressor
do you have any ice or frost forming on the exposed line
if you do your overcharged
it's that simple
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Posted 28 March 2013 - 05:16 PM
to fllow cactus bob's maths quiz
i have been throuh this with 15 yo my single freezer
its power hungry
using 3.9kwh per day so 1453kwh per year
still a current model
and a new one is rated using 559 kwh
our electricity is expensive 26.675 c/kwh
so its costing $380 per year instead of $150
a new one cost $1096 so just over 4 year payback and the will have it
for the next 10 years
problem is what happns if it dies andi lose all the food ??
I reallly not need the extra freezer anymore so will be getting rid of it soon
and saving $380 a year on power and since my yearly power is about $1200 thats a big
Posted 29 March 2013 - 11:42 AM
Checked the compressor line and its cool, not cold or frosty. I would say its a little cooler than room temperature.
Posted 29 March 2013 - 12:31 PM
Gregs : sounds good , just what your looking for
not to much , not to little , just right
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