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Topic: Any tips for getting fridge to run more efficiently on AC power? (Read 1094 times) previous topic - next topic

Re: Any tips for getting fridge to run more efficiently on AC power?

Reply #25 –
Since this is an AC fridge discussion, thought I'd add my opine on ventilation for residential fridge installs.  I'm no physicist, but every cooling system actually removes heat from whatever it is cooling.  I don't believe that you can get the most efficiency and/or longevity out of your residential fridge if you hermetically seal it into the wall opening.  That heat has to go somewhere.  Unless you have a Sub-Zero or other $10K frig that is.

When I had my residential Samsung installed at MOT, the only complaint I had on the install was that the tech professionally sealed up both the back access panel and roof vent.  When I asked him where the heat was going to go, he looked at me like a deer in headlights.  I persuaded him to hole-saw a few 3" holes in the beautiful, black painted top plywood panel he had installed inside the roof vent opening.  I leave the kitchen window cracked a bit for an air inlet source.  At least I am happy anyway and confident my frig is "breathing" freely.  Woody.
2001 4010 U320 build #5865 "Bluto-d-Bus" since 09/18
2006 Honda Element ESP Toad
Full timing since 2016 in Western MT
Copilot: Sitka
1975 GMC 260 Avion: sold

Re: Any tips for getting fridge to run more efficiently on AC power?

Reply #26 –
Pyolet, I was concerned as you were about ventilation for my Samsung. 

After researching with several professional installers, and looking at the Samsung install instructions attached, I found you do not need to ventilate, as it ventilates itself, out from under the refrigerator, and to the front. 

The Samsung  installation manual gives you the required clearances on the top, sides, and rear.  The requirements on the top and sides is 3/8 inch clearance for ventilation and 1-2 inches on the rear for ventilation and water/electrical connections.  The hot air is expelled out the front from underneath.

The installer blocked off totally the rear and roof vent.  The refrigerator works flawlessly and uses about 1.75 KW of electricity, on the average, per day.  On days we open and close the refrigerator less, we use less kwh, as low as 1.12 and 1.44 kwh as in the screenshot below.  The shared album below will show the interior space of the RF20HFENBSR we have in our FT.

Shared album - John Lewis - Google Photos
97 U295 40, Build #5040, 6C8.3 325 HP
Oregon Continuous Traveler
Samsung Residential #RF20HFENBSR,
Xantrex SW2012, (3)AGM8D Hse, (2)AGM Grp24 Eng, Victron BMV-712, 1800w Solar 4 LG & 2 Sunpower
Extreme Full Body Pt w/hdlmps, new furn/floor, 4 down Lexus 2004 GX470 AWD curb weight 4,740 lbs
Prev: 1990 Barth, 10L 300 2 yrs; 91&92 Monaco Signature, 10 yrs, 10L C 300 &  6C8.3 300; 1997 ForeT 6C8.3 325 since May 2017.  Employed by Guaranty RV 14+ yrs.  Former VW New Car Dlr/Service Dlr, Sales Mgr, Rv Sales, and Service Adviser from 1968-2017
"Don't criticize what you can't understand" Bob Dylan

Re: Any tips for getting fridge to run more efficiently on AC power?

Reply #27 –
Recheck the JC Refrigeration site and look at their ALL electric upgrades,they come in 120 volt or 12 volt,they list the watt draw
at 96,either yours is not all electric or you have other draws to come up with this 400 to 500.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: Any tips for getting fridge to run more efficiently on AC power?

Reply #28 –
I use a built for friges, battery powered fan. Takes 2 d cell batteries. Works to circulate the air better
1996 U295-36, Cummins 300hp, 8.3. Build number 4864. Vin number 1F97D536XTNO54271. Purchased October 31, 2019.
 

Re: Any tips for getting fridge to run more efficiently on AC power?

Reply #29 –
Our 12v fridge fans to move air behind our electric fridge: