Pro cleaning for BIG window/wall A/C units? (Alamo: apartment, tenants)

[Trivet The Fool]

The breakdown:

2 window/wall A/C units

One is 12,000 BTU, the other 23,500 BTU

Need cleaning, preferably on site & not expensive

SE side

Any recommendations? The larger of the two is six feet off the ground, so cleaning it myself is a no-go as you need either five people or a winch lift to get it out.

[SATX56]

Alamo Service if they're still in operation! It won't be cheap!

BTW......2 people, no lift, for any window unit 6' off the ground! Two dwarf's for the newer ones.

[ged_782]

Some of the window/wall air conditioners, particularly some of the larger ones, have a slide-out chassis. You remove the front fascia from the inside, then slide out the chassis, take it outside and clean or service it.

The units that are mounted through the wall are the most likely to have a slide-out chassis. They can be pretty tough to install that way if they don't.

[Trivet The Fool]

Thanks much for the reco; will be calling them & a few other places today.

Both have the slide-out chasis - much easier all around; I installed the smaller unit in my window myself. I'm just unsure what NOT to spray.

[ShaneSA]

The units are made to be exposed to the elements. I take window units to the car wash. the self wash habd held sprayer car wash. Spray the coils on the front and the back. You can also spray the inside and the back coils from the inside. it will get all the deep dirt off and make the unit more efficient and quieter.
i have apartment units with window/wall units and take them to the car wash after tenants whohave failed to clean the filter move out. it is more dirt than you can get with a garden hose and the spray cleans deep.
The first time I did it(on reccomendation from the service man) i had my heart in my mouth. It works every time and the water does not damage the sealed electric components.