Thread Number: 72400  /  Tag: Other Home Products or Autos
Can vintage freezers rival new ones? ( energy efficiency )
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Post# 956778   9/9/2017 at 14:09 by AmyofEscobar (oregon)        

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I'm just curious how vintage chest and upright freezers do against their modern counterparts when it comes to energy savings
I'm especially interested in comparing vintage chest manual defrost to modern ones. Are the compressors just the weak link here? Anyone ever tried installing a modern compressor in an old unit?

Post# 956788 , Reply# 1   9/9/2017 at 15:21 by twintubdexter (Palm Springs)        

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I'm certainly no authority, but I have the feeling there are still a lot of Amana, Deepfreeze and Ben-Hur chest freezers and the like chugging along in garages and basements everywhere keeping more than just a few packages of Birdseye cold. 

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Post# 956799 , Reply# 2   9/9/2017 at 16:15 by amyofescobar (oregon)        

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I'm just thinking, how much energy do old chests use compared to new? I love the idea of never having to repair my freezer, even if it costs a little more to run each month. But if the energy usage is too much to justify repair savings, then bye bye vintage...

Post# 956800 , Reply# 3   9/9/2017 at 16:19 by cfz2882 (Belle Fourche,SD)        
old freezers still on the job

there is a ~1947 GE freezer in my parents basement still going-it has a big cast iron bolted hermetic compressor that runs at 1725 RPM vs more modern ones that run at twice that speed and still last for decades...I thing the insulation and gasket effectiveness make a bigger difference than than the "efficiency"of an undersized compressor that has to run more often :)The current draw of the ~1947 GE was 3.6A while a 1974 westy freezer of similar size pulled 3A

Post# 956807 , Reply# 4   9/9/2017 at 17:03 by norgeway (mocksville n c )        
You have to consider one thing!

If it runs 50 or 60 years with no repairs...Then in the long run you save money, because a new one you will replace once twice or even more times, that has to be added to the cost...I will take vintage, Donalds parents bought a huge Westinghouse chest freezer the summer of 64 before he was born, its never been touched and still stays at a steady 5 below....

Post# 956834 , Reply# 5   9/9/2017 at 21:41 by sudsmaster (East of SF, West of Eden)        

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If it's a GE, you might be able to call GE and get energy consumption data even for a vintage unit.

Or, get a watt meter and check the old one for about a week or so.

My overall impression is that older manual defrost chest freezers are pretty efficient, even if they have old compressors, providing as said that their insulation and gaskets are in good shape.

The biggest energy waste in a freezer is the auto defrost system. Then, upright freezers can never be as efficient as chest freezers. Because every time you open an upright freezer, all the cold air spills out. With a chest freezer it's mostly contained even with the top up. The drawback of course is that it can be harder to find stuff in a chest freezer. A written list of what's in there is probably a good idea. Might do that someday.

Post# 956840 , Reply# 6   9/9/2017 at 22:43 by Maytag85 (25 miles from Idywild, 25 miles from Temecula. )        

People always say "Old appliances use a lot of energy" but that is not so true anymore due to how poorly made today's appliances are. You use less energy in the long run with vintage appliances, because they get the job done right the first time, their performance is superior compared to modern appliances, and that is the truth. The front load Kenmore washer that I have listed in Shoppers Square, pulls 10 amps, while the Maytag A810 from the early 80's pulls 7 amps, and the matching dryer that goes with my Maytag drys faster than the Kenmore dryer that goes with it matching counterpart.

Post# 956843 , Reply# 7   9/9/2017 at 23:06 by amyofescobar (oregon)        

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Yeahhhh... but..... anyone have any data though? Because I'm still not sold that the old freezers are "energy efficient enough".

How would they compare to old fridges? I know many people have claimed that their vintage fridges are costing them $20/mo.

Various posts from:

- "When we bought our house, it came with an old refrigerator in the basement. We used it for a year or two and then decided to get a new one. Our energy bills DID go down quite a bit--I can't remember exactly, but in the neighborhood of $20 or $30 a month."

- "I got rid of a chest freezer in my garage that we bought 20 yrs ago with our wedding cash. I have seen a 20-30 dollar reduction in my electric bills! I figure if and when, we decide that we need one, the savings will have paid for it several times over."

Now let's just say that a modern XL chest freezer will cost $70/year (which really is estimating quite high). That's going to be just under $6 electricity, so you'd be saving $216 a year. Modern freezers easily last 5 years without repair (thats a very short estimate) so yeah, you'd eventually save $1080! I don't see how it's possibly worth it to keep an old freezer...

But, that's just going off of some bits of info I've grabbed here and there. I know not all electric rates are the same. But even if you saved HALF that, you just saved the cost of a new freezer pretty easily. Unless I did the math wrong...

Post# 956844 , Reply# 8   9/9/2017 at 23:08 by cadman (Cedar Falls, IA)        

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I run an original (round) Deep Freeze brand freezer here as the main frozen food store. I put a kill-a-watt on it for a month a couple years ago and was surprised at how little power it used (wish I had the numbers handy, but it was a couple bucks a month, tops). Ice cream stays rock hard, and I've only had to defrost it once in all the years I've had it. I wouldn't trade it for anything made today!

Post# 956852 , Reply# 9   9/9/2017 at 23:57 by polkanut (Wausau, WI )        

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This is what Cadman posted back in March, 2014 about his Deepfreeze freezer.  "After one month's usage, total KWH is 21.83. At our all-electric winter rate of $0.05/KwH, this comes to a grand total of $1.09!" 

Post# 956867 , Reply# 10   9/10/2017 at 02:23 by sudsmaster (East of SF, West of Eden)        

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Again, it's the automatic defrost feature on modern fridges that can be the big energy guzzler.

Example: when I bought this house in 1997, it came with a GE SXS fridge, circa 1978. I checked with GE and it was rated to consume over 1700 KWh/yr. I liked its ice maker (nice cubes) but replaced it with a KA SXS that uses about 640 KWh/yr. At the time, KA and Whirlpool were at the forefront of energy efficient fridges for the consumer market. Better insulation, more efficient lower power compressors, and better implementation of auto defrost. So for the same capacity, my new (in 2000) fridge used about 1/3 the energy of the older one.

Now in the garage I have an even older GE, circa 1948. It's probably about 16 cu ft with one of those tiny freezers that might fit a half gallon of ice cream and an ice cube tray. But as I recall when I checked, it uses about 400 KWh/yr. Again, very thick insulation, and no automatic defrost whatsoever.

Newer fridges appear to be even more energy efficient. One drawback is that they all now use non CFC refrigerants, using flammable hydrocarbons instead. This may be better for the environment but it's also more of a safety hazard for consumers.

My 15 cu ft Kenmore chest freezer uses about 350 KWh/yr. It's manual defrost, but is one of the few that has a flash defrost feature, which is great. You still have to empty it out, but when you pull a little knob in the lid, it reverses the refrigerant flow and sends hot refrigerant through the coils, which melt the accumulated ice relatively quickly. It's a great feature but kind of rare. Alternatively one could use a hair dryer or (carefully) a heat gun to get rid of the ice buildup. I find I only need to do a defrost about once a year. Usually I wait for fall when the temps in the enclosed patio where it resides are lower so that the relocated items don't thaw so quickly.

Post# 956889 , Reply# 11   9/10/2017 at 08:50 by panthera (Rocky Mountains)        
Well, our '67 Frigidaire Custom Deluxe Frostproof

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Did not raise our electric bills $20 or $30 dollars a month. They stayed the same. It did, however, replace our 1948 Crossley and a one of those under the counter GE refrigerators.


As to energy efficiency and freezers - it's reliability in several factors which matter more than efficiency:

1) Ability to hold true '-20ºC' or below, empty or full.

2) Ability to bring warmer foods down to'-20ºC' or below fast enough to minimize damage to texture, spoilage.

3) Ability to keep food frozen during a prolonged power outage.


Everything else is secondary.


It appears that modern freezers have extremely short lifespans with designed in failure points. Why would I put several hundred if not thousand dollars worth of food into a device intentionally designed to fail and ruin my food? We have three new, energy efficient freezers, by the way, one of which is off-line and used only for the occasional defrost of the others or for when (not if) one of the others fails. It's not a situation I'm happy with and should I find a vintage freezer in great condition, one of these made-to-fail-and-ruin-your-food devices will be out the door in a New York Minute.


There is nothing efficient about a device built and designed to fail.

Post# 956891 , Reply# 12   9/10/2017 at 09:14 by polkanut (Wausau, WI )        

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Here's the link to Cadman's original post.  


Post# 956893 , Reply# 13   9/10/2017 at 09:23 by Yogitunes (New Jersey)        

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heres a factor in many newer fridges and freezers that may be placed in an unheated area like a garage....

many people use one as a spare fridge, or beer cooler....or just for space constrictions, the freezer is placed in the garage....

in any case, theres a built in device that it wont allow it operate outside of normal indoor temps....

I have a few that were given to me, with the issue they stopped working....discovered they were used in a garage setting.....once placed inside, they work fine.....

in hence, people who discover this are searching for older fridges...mostly from the 80/90's....for use in a garage...

if it aint broke, don't fix it....or weigh out the benefits of fixing versus buying new.....

the one time I seen a drastic price change in electric bills was as a blind discovery the thermostat of the freezer kept it running 24/7....once changed out, the bill dropped by 25.00....

various ideas can cause a freezer to use more/less energy.....age, condition, seals, insulation.....but in any case, a full unit will operate less than one with only a few items inside....

a lot of people place jugs of water in a freezer to fill empty space, and help keep things cold....

Post# 956894 , Reply# 14   9/10/2017 at 09:34 by sudsmaster (East of SF, West of Eden)        

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As I understand it, chest freezers are OK in an unheated area. However a standard fridge is not. That's because if the temp in the unheated area drops below the set point of the fridge, then it won't run its compressor at all because it thinks everything is fine. This means that the freezer portion (generally on top) will not be chilled and will eventually reach the temperature of the refrigerator/unheated area, with food thawing and potentially spoiled.

Post# 956895 , Reply# 15   9/10/2017 at 09:35 by panthera (Rocky Mountains)        
I am not, in general, opposed to efficiency

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I just think one should consider every important aspect of any particular appliance' value, not just the electric bill.

Our GE Twenty-Eight-Hundred doesn't need to have things pre-rinsed, doesn't need to be loaded with any particular care or attention and gets everything spotlessly clean and thoroughly rinsed in well under an hour.

So what if it uses more water than a more 'efficient' dishwasher which sprinkles two drops on the dishes, runs for four hours and both requires me to pre-scrub the pots and pans before 'washing' and clean them afterwards. But not, before I take apart and clean the filter, the pre-filter, the micro-filter and remove all the gunk and debris from the various spray arms and tubes.....

Ditto, freezers and refrigerators. If a modern device is reliable and efficient and manages not to be so ugly I want to boil my eyeballs in lye to remove the image, well, then - great. I can tolerate it im Keller oder in der Garage.

We use modern microwave ovens, despite their short lifespans because I LIKE having 2000 watts to get cooking done fast. Just, I don't store thousands of dollars of food in one...nor do I expect a microwave oven to keep my milk at +1ºC, which is where I like it.

Post# 956898 , Reply# 16   9/10/2017 at 09:42 by combo52 (Beltsville,Md)        
Freezer Efficiency

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Older crest freezers [ before around 1990 ] easily use twice the power of current new chest freezers, and there is NO evidence that current larger American built CFs will not last 20-50 years most likley without ever requiring a service call.


The difference in energy usage is mainly due to more efficient compressors [ and yes it is possible to substitute a modern compressor, but it takes a lot of expertise and money to do it correctly ] but the rest of the difference is insulation which is about impossible to do anything about.


All that said older CFs are fairly efficient compared to older FF freezers and refs, but freezers really do not have that much style and it is not likley that you would have it in the living space where it would look really cool anyway.


I would go for a NEW CF or upright freezer in a heart beat if you care about your utility bill or maybe just the planet.


John L.

Post# 956914 , Reply# 17   9/10/2017 at 10:29 by drhardee ( Columbia, SC)        

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All this being said, I'm going to reserve judgement on the intelligence of (our) swapping out our 1960-something era 15 CF Kelvinator chest freezer for a 2017 "Energy Star" rated Frigidaire 16 CF FF upright freezer.

Both units were/are in a storage shed in the back yard. The Kelvinator unit worked flawlessly for umpteen years, but rust was beginning to eat a large hole in the top from rain leaking in through the roof in the much older metal shed. We replaced the 30+ year old metal shed with a stout (built on site, not prefab) wooden shed a few weeks ago, and I, after much internal teeth gnashing, went for a highly rated Frigidaire FF upright unit. I had told myself for years that when the shed was replaced, so would the freezer.

There wasn't a thing mechanically wrong with the Kelvinator freezer, it was just going to soon have a larger rust hole in the top. All we did was defrost it once a year, in the summertime. I'd unplug it and throw the lid open for a few hours. All the frozen food was safely ensconced in a neighbor's freezer during that painless process.

Modern day chest freezers look like they're made of tinfoil compared to the beefy steel construction of that Kelvinator, which we inherited from a friend when he moved across the country 20 years ago.

Time will tell if I did a stupid thing.

Post# 956917 , Reply# 18   9/10/2017 at 11:02 by combo52 (Beltsville,Md)        

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Hi Dave, the old Kelvinator chest freezer would have probably out lasted the new FD FF upright freezer, FF freezers have three times as many parts to fail and cause a service call and loss of ability to keep food frozen.

However you are comparing apples to oranges when you compare a manual defrost chest freezer to a no-frost upright.

You are correct that newer freezers have much thinner outer shells, but this in no real way affects function or longevity.

John L.

Post# 956919 , Reply# 19   9/10/2017 at 11:05 by panthera (Rocky Mountains)        
Isn't, in the end, the problem

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One of priorities?

I don't drink, I don't smoke, I stopped eating meat about 30 years when people lecture me on my 'unhealthy' lifestyle of being gay and liking chocolate, butter and coffee - I just look at them and say, yeah, whatever.

As I said - we've got modern freezers but anyone who thinks those inverters LG uses are built to last 20 years, much less 50 is seriously more trusting than I could ever dream of being.

Post# 956922 , Reply# 20   9/10/2017 at 11:08 by combo52 (Beltsville,Md)        

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Again off topic, I have never seen a chest freezer with an inverter.

Post# 956925 , Reply# 21   9/10/2017 at 11:27 by sudsmaster (East of SF, West of Eden)        

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My understanding that newer fridges and freezers post- about 2000, use a more efficient style of insulation (some sort of foam) that allows them to have thinner walls than older units with spun fiberglass insulation, for about the same R-value. Seems to me that the appliance stylists around 1970 started designing refrigeration units with thin walls but less efficient fiberglass insulation, resulting in higher energy use than an older thick wall design would require. The newer insulation materials may have compensated for the form over function issue.

Newer units also use lower power compressors that use less amps but run more often. Apparently this works out to lower overall energy consumption.

Other energy efficient tweaks may include, for automatic self-defrosting units, going from timed defrost cycles (like every 24 hours whether it needs it or not) to sensor driven defrost units that can detect ice build-up (on the coils, I guess) and only run a defrost cycle when it's needed.

Post# 956929 , Reply# 22   9/10/2017 at 12:08 by washman (Butler, PA)        
you forgot a couple of things panthera

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1. Invest in "dishwasher Cleaner" to "clean" the machine that is designed to "clean" your dishes.
2. Cleaner to "clean" the eco-sanctioned washing machine that is supposed to "clean" your laundry.

Not to mention the resources needed to make, market, and distribute the "chemicals" we're all supposed to use to compensate for the fact these so called green machines are basically five star pieces of donkey dung.

If that is going green and making Mother Earth (and algore) happy, then I am more than content to be the curmudgeon that seriously has questioned (and will continue to do so) this eco-nonsense.

Post# 956930 , Reply# 23   9/10/2017 at 12:29 by combo52 (Beltsville,Md)        
Refrigerator and Freezer Insulation

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Refs and Freezers started using more efficient foam insulation in the early 60s, this allowed thinner walls that insulated as well as older fiberglass insulated models. GE was big on foam insulation from 1961 on on their better models, Kelvinator followed suit in the mid 60s and FD went entirely foam in 1971.

In the past couple decades manufactures have gone back to much thicker walls filled with foam.

Compressors still have about the same cooling power or BTUs on similar size FF refs as they ever did, and modern FF refs actually run much less than older less efficient models from the 60s and 70s, the big difference is more efficient motors and less friction designed into the compressors. These newer compressors are far outlasting compressors in 60s and 70s refs as they run so much cooler and run less time as well.

Post# 956936 , Reply# 24   9/10/2017 at 12:52 by panthera (Rocky Mountains)        

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I stand gladly corrected. You're so right.

Post# 957006 , Reply# 25   9/10/2017 at 23:19 by fridgenut (Cape Girardeau, MO)        
I have a 49 GE freezer...

And it works beautifully. Comparing it, a 9 cubic foot chest style with an early 70s coldspot upright manual defrost 15 cubic foot...there is no comparison. I ditched the coldspot, sold it off for what I had in it once I re wired my GE. The verdict on energy usage? A whopping $15 a month for the coldspot and $6 a month for the GE. Of course you have to take the size differences and configuration into account. I have no idea what a modern one uses. I do know that for my chest freezer it is possible to upgrade the insulation. That would make a tremendous difference. It's quiet and rock solid. It will more than likely outlive me. Those connecting rod compressors that GE used at that time were built like tanks. As a bonus it has a little C7 light that comes on only when the temperature is correct. Too hot or too cold and it will go off. That came in handy once when I forgot to turn the thermostat back on! The thermostat got replaced by me when I did the wiring but the relay is still original.
Oh, and the Ben Hur badge is one of the best badges ever.

Post# 957015 , Reply# 26   9/10/2017 at 23:29 by Supersuds (Knoxville, Tenn.)        

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I put a Kill-A-Watt meter on my 2001 Electrolux-built Kenmore manual defrost freezer, and figured it was costing only $2 a month, at 10¢ per kilowatt-hour.

A round Deepfreeze would be way cooler, though.

Post# 957055 , Reply# 27   9/11/2017 at 01:52 by sudsmaster (East of SF, West of Eden)        

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Thanks for the info on freezer/fridge insulation. I has assumed from material I read around 2000 that there had been some sort of change in the type of foam used, but from what you say the improvement in energy efficiency was gained simply by making the walls of the Energy Star appliances thicker.

Still, it seems that energy efficiency suffered in 60's-80's consumer refrigeration units due to insufficient insulation, in order to get more interior volume and perhaps more attractive, stylish units (form over function). Another culprit was auto defrost cycles that went by timer rather than need; more modern efficient units only run the defrost cycle when sensors detect ice buildup on coils.

BTW, the foam insulation on one of my circa 2000 KA fridges leaves something to be desired. Apparently it sometimes would shrink in time, causing the sides (and doors) of the units to bow and buckle. I happen to have one of these defective units; Whirlpool was so uncooperative when I sent them photos of the caved in doors that I gave up trying to get it fixed.

Post# 957060 , Reply# 28   9/11/2017 at 02:36 by rp2813 (The Big Blue Bubble)        

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I should get a Kill-A-Watt thingamajig and see what the 1960 Monkey Wards Tru-Cold in the basement is costing to run.  It's an upright, and has been in continuous operation except for defrostings, intervals for which are measured in years.  About every four or five years would probably be good to shoot for.  Until I defrosted it this past July, it had been eight years, which was way too long.


I could get by with something smaller, but the Tru-Cold is forever stuck in the basement due to some reconfiguration at the top of the stairs some 50 years ago, so switching it out isn't an option.


Eight year old file photos:

  Photos...       <              >      Photo 1 of 3         View Full Size
Post# 957096 , Reply# 29   9/11/2017 at 08:58 by norgeway (mocksville n c )        
I just cant stand

Anything new, call it a phobia, but I wouldn't care if a old fridge or freezer DID cost more to run, its built better, its better looking and almost always keeps food better, and I'm looking for a old fridge for my kitchen now, The 7 year old Hotpoint has NEVER kept frozen food worth a darn, and I'm going back to a real fridge with MANUAL defrost.

Post# 957099 , Reply# 30   9/11/2017 at 09:14 by DaveAMKrayoGuy (Oak Park, MI)        
Although Freezers, Great VINTAGE, OLD:

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I'm not sure how repairable my in-laws' former Gibson '70's Upright Frost-Clear &/or '80's Montgomery Ward no-name cube could have been--both leaked water & the latter's insulation from the weight of the lid became deteriorating foam! (The older former was actually the later bought, after the newer, latter just quit working...)

-- Dave

Post# 957332 , Reply# 31   9/13/2017 at 02:57 by amyofescobar (oregon)        
Can I just say

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I hate fridge/freezer combos. I just kinda hate them. If it were up to me, I'd have an industrial fridge, and an industrial freezer, just like at the grocery store.

1) Everyone should totes get a kill-o-whatever and send in those numbers for your old/new freezers. I wonder how the vintage uprights do. It would not surprise me in the least if the numbers were all over the place. I bet some old brands don't age as well, or the different conditions like fullness or location have a part to play.

2) I don't care if its a new or old freezer, I would want the food in there to be able to stay good for at least 2 days, at least. No matter if your old freezer finally gives up the ghost, or if your new one runs thru it's planned life cycle, I'd want to know I would at least have 2 days.

3) Combo52, tell me more of these modern compressors because everything I'm reading, and I mean everything seems to say that there is the potential for these energy-star darlings to basically work themselves to death. It's the efficiency trade-off I guess. And everything I've been hearing is that these freezers are going to last 15 years tops. Please, please, tell me more!

*And as far as old stuff running better... I mean yeah, I have the vintage hobart KA dishwasher, but... this is a freezer. I mean, a Manual. Defrost. Chest. Freezer. Is there anything inherently simpler? I'm thinkin' no. So maybe new isn't so awful.

Post# 957348 , Reply# 32   9/13/2017 at 04:52 by Yogitunes (New Jersey)        

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surprise! surprise!.....they do make, in fact JohnL and myself have a set of ALL fridges, and ALL Freezers....

they fit side by side if needed, giving the look of a side by side, just wider!

if I am correct, his has the ice maker built inside...and the units are built in to his kitchen layout.....if I had the space, mine would be too....

check the link, Sears still has them.....


Post# 957359 , Reply# 33   9/13/2017 at 07:07 by henene4 (Germany)        
On this side of the pond

We have a Liebherr chest freezer from some time in the early 2000s and a small build in upright IKEA from 2012 I think.

When the build in AEG that came with the kitchen in 1987 broke, I emailed them about the consumption, and the reply stated it uses about 1kWh per day. The new replacement, while being in the lower end of todays efficency ratings (A+ on a scale from A to A+++), uses half that, saveing us about 5€ a month.
And that is on a really small model with only about 3.6ft³.

However, when we were deciding if we should replace our ~10 year old build in fridge after one of the hinges broke, it turns out that we would only save like 1-2€ a month with a A+++ rated fridge.

So, I think with really old cooling appliances, savings can be really big.

On the topic of NoFrost freezers (that's what hey are called here), a sales person here once made a really good point:
For a freezer that is used as a long term storage and thus isn't opend that often, there is verry little air exchange happening that could cause ice buildup. There, automatic defrosting can have negative effects due to temperature fluctuations and the higher energy usage of the defrost cycles.
For freezers opend more frequenly, the slightly reduced holding time of food dosen't matter as much and due to the faster ice buildup from more frequent opening, a NoFrost system has less of an impact on the efficency due to the better efficency of heat exchange without ice buildup.

On inverters: I know that a lot of really high efficency fridges and freezers over here do use inverter controlled compressors. Most give a 10 year warranty on compressor and inverter.
In theory, a well controlled inverter cooling system can keep food fresher for longer with less energy usage.
Instead of cycleing on and off, an inverter system is usually designed to run non-stop, with the lowest power setting being just enough to compensate for heat loss via insulation. That keps the temperature really consistent in theory and saves energy and wear as normal compressors have high start-up currents.
If the door is opend and\or fresh food is added, power is ramped up immediatley and temperature loss is compensated rapidly.
Some systems go as far as to learn the day\night cycle: The first few days after turning on, they run with a slightly higher temperature reserve and check when the doors are opend and when not. Then, they adapt and allow for bigger temperature tollerances during phases of the day when doors are less likely to be opend and thus need lower compressor power during that time.

Post# 957364 , Reply# 34   9/13/2017 at 08:19 by sudsmaster (East of SF, West of Eden)        
Don't poo poo energy efficient refrigeration...

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Here in California electricity use above a subsistence level (@ $0.20/KWh) costs nearly $0.30/KWh. In most households refrigeration is a major, if not the major, consumer of electrical energy. Therefore getting an energy star refrigeration unit definitely can cut one's energy bills, and is nothing to scoff at.

In the past if you wanted separate upright freezers and fridges, you had to get commercial units which were rarely if ever energy efficient. I guess now there are Energy Star versions, although I haven't seen them. I get by with an Energy Star fridge/freezer and an energy efficient chest freezer. By replacing 70's-80's era units with Energy Star units (circa 2000) I cut refrigeration energy consumption by 2/3. Again, nothing to sneeze at. About 3200 KWh/yr down to about 1200 KWh/yr. At $.30/KWh, that's $600/yr saved. Not inconsequential!

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