Air conditioning woes- 25 y/o in wall unit finally replacing!

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Don2222

Minister of Fire
Hearth Supporter
Feb 1, 2010
9,151
Salem NH
Hello
The old unit kept tripping the breaker and finally there was a burning smell it it stopped.
So I got a new LG wall unit Model LT101j6CER and optional sleeve for an easy install and servicing.
First I do want to mention that it is a good 9,800 BTU unit but the instructions a very flawed when they say to install the sleeve flush with the wall and use the foam strips to give the unit some tilt so the water or condensation will not flow into the house! This just does not work and you must install the sleeve at an angle to make the water flow outside! I install the top of the sleeve flush with the Sheetrock and the bottom pulled out about and 1” from the Sheetrock. Also I used wood shims on the sides to keep the sides straight before screwing the sides in with round head screws and washers.
Other than that every thing else is fine and once you get the sleeve or what I call the shell in the wall the rest is easy peasy. This is a good standard size shell 26” x 15.5” and fits many models, so should better going forward!
Anyway this is a 120 unit to be plugged into a 15 Amp AC outlet so since the old one is burned up, I got a new one and a new circuit breaker. In the meantime, I have it on an AC heavy duty extension cord to get through the rest of this Hot as Hati heat wave!
The old unit had to shelf brackets to hold it up on the outside but the sleeve of the new unit is screwed into the wall stud on one side and a 2x4 that is screwed into the wall stud on the other side so no outside support is needed. Also used 1” X 2” Azec Composite PVC trim for No Paint & o Rot! Now I can get a custom winter cover that will slip right on the unit. :)
Will this unit be more efficient?

Pic 1,2 & 3 = old AC Samsung AW1216 - Manual does not state BTUs but control panel states 12,000 BTUs
Pic 4 = burned up AC wall outlet
Pic 5 - 8 = widen hole of old AC unit to fit new one.
Pic 9 - 11 = new LG AC wall unit with optional sleeve.
Pic 12 - new AC came just in time!
93.7 outside
73.2 inside!
 

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Just went through this as well. My new unit wont even warm the plug in end of its cord. Previous unit was getting very warm. Hence the replacement. New unit seems to operate much easier. Seat of the pants says its much more efficient.
You were very fortunate to even have a building left to condition! Close call there.
 
Just went through this as well. My new unit wont even warm the plug in end of its cord. Previous unit was getting very warm. Hence the replacement. New unit seems to operate much easier. Seat of the pants says its much more efficient.
You were very fortunate to even have a building left to condition! Close call there.
Thanks
Do u have any pics? I like to see the results of your struggle too. I saw a YouTube video on doing it, the guy just slid out the old unit and slid in a new unit! If it was that easy it would not have taken me and my helper 1 whole day to do it! My new AC unit was 4 inches wider! That made the job so much harder!!!

 
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Is that a plastic trim ring in Picture #9? I have an LG thru wall unit and I had to trim it myself.

I too had to shim out my opening as I was going from an 18k btu old school GE unit to a 12k LG. Most of my effort was to 2x4 shim the bottom of the opening. I replaced that 12k LG after about 6 years; acted like it was low on fluid. Replacement was a 10k LG, but slid right into the 12k sleeve. I'm not that impressed by the LG because here we are 6 years later and all signs are pointing to low fluid again.

Re the install: my LG instructions specifically said to lay a 24" (or longer) level in the case/sleeve bottom (north/south for you stove owners), so that the near end of the level overhangs into the room and the far end hangs out the back of the opening. This gave about a 1/2 inch drop for the length of the case/sleeve. That also allows the drain well to fill with condensate water so the fan's slinger ring sloshes it onto the fins for increased efficiency. Weird that yours didn't mention any slope.
 
Thanks
Do u have any pics? I like to see the results of your struggle too. I saw a YouTube video on doing it, the guy just slid out the old unit and slid in a new unit! If it was that easy it would not have taken me and my helper 1 whole day to do it! My new AC unit was 4 inches wider! That made the job so much harder!!!



No pics. Actually did two installs recently. One involved a chainsaw_g True story..... Talk about getting your measurements right the first time. It all worked out fine. I'll get some pics if I get a chance.
 

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Is that a plastic trim ring in Picture #9? I have an LG thru wall unit and I had to trim it myself.

I too had to shim out my opening as I was going from an 18k btu old school GE unit to a 12k LG. Most of my effort was to 2x4 shim the bottom of the opening. I replaced that 12k LG after about 6 years; acted like it was low on fluid. Replacement was a 10k LG, but slid right into the 12k sleeve. I'm not that impressed by the LG because here we are 6 years later and all signs are pointing to low fluid again.

Re the install: my LG instructions specifically said to lay a 24" (or longer) level in the case/sleeve bottom (north/south for you stove owners), so that the near end of the level overhangs into the room and the far end hangs out the back of the opening. This gave about a 1/2 inch drop for the length of the case/sleeve. That also allows the drain well to fill with condensate water so the fan's slinger ring sloshes it onto the fins for increased efficiency. Weird that yours didn't mention any slope.

What size is your sleeve, do you think you will be able to slide a new one on next time?
My new sleeve is 25-7/8 by 15-17/32 for the 10K BTU LT1016CER so
Roughly 26 x 15.5
The last pic states universal fit for a 26" sleeve for this 8K BTU LG model and the 10K & 11.5K 230 VAC LG models also fits this sleeve so that is at least 4 LG models that use the same case.
I hope this is a little more common?

Yes, that is a plastic trim ring that comes with the
LG1016CER 110 vac 9,800 BTU air conditioner.
The LG 9,800 BTU 230 VAC unit in my shop also came with a plastic trim ring. These units are not window units they are Thru The Wall bit I still had to purchase the sleeves separately ???
The only mention of slope was the flimsy foam strips that were thicker in the front and that was to make it slope! They compress right down with no slope, so I had to slope the sleeve to make it right.
Good work on yours and I hope they last as long as the old 25 year Samsung I replaced!
 

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Hello
Finally just finished patching and painting the wall and getting all the shelves back up!
 

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Hello
Now to keep them ship shape and eliminate drafts in the winter, we got 3 heavy duty canvas custom fit outside covers with elastic corners from coversandall!
Custom Covers – Patio, TVs, Fire Pits, Firewood, BBQ Grills– Coversandall
we just uploaded a pic and outside dimensions with the order and asked for elastic corners so they just slide on and hold tight.
Now it is cold outside but they are protected from ice and snow and cozy inside!
See air conditioner covers here. :)
Search results for: 'air conditioner covers'
 

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