Replacing Carrier Through the wall AC Unit

[stumiller]

I have some old (1988) Carrier ac units that I'd like to replace. I've lubed the fan motors as best I can several times but inevitably they'll freeze up on the hottest day of the year. Chassis is pretty rusted as well. Model number is 51ZMA70601.

Problem is, we have a nice old place and in order to avoid carving up the wall, I'd like to just slide in a new sleeve or new unit rather than cut a bigger hole. Existing sleeve outside dimensions are 15" H x 20 1/8" W x 16 1/2 D but guessing I'll never find a new one to fit the existing sleeve.

Any recommendations?

Thanks.

[Cactus Bob]

SHIPPING AC UNITS IS EXPENSIVE  so go to your local motel owner and ask where he gets his units you will find he uses  a dealer nearby .with sales and service .......why by something over the internet that you cant find service for in your area ..........update : this is what happens when i just skim a post . looking at the size you want you just need a regular sized wall/window unit .... take your measurement to . sears /lowes /best buy ect ...... i does not matter anymore wnat brand you buy ( there all cheeply made )  if you want less trouble dont buy into all the bells a whistles ( no remote controls ,digital controls ect ) KEEP IT SIMPLE ....best if luck BOB

[stumiller]

Thanks Bob. I agree that shipping would be to much. Wasn't really planning to buy online but was curious about the wisdom of trying to find one the same size versus having a bigger hole cut in the wall...

[Cactus Bob]

RECHECK THE ABOVE POST , I UPDATED IT