THere is an old saying "If it ain't broke, don't fix it"
And when it comes to the A/C.. Only takes most RV tech's a day or two to grab a new one and get to you. and about an hour to slap 'er on.
Coleman's by the way are nice. easier to clean the condenser (which you need to do often) than other makes. .. WHY. Because they SUCK
That means they draw air in through the condenser so the "Crud" is on the outside where you only need to remove the outer cover to clear it off.
Others BLOW do you got to take 'em much more apart and that's not always easy.