I almost never do commercial. Been asked to clean a motel with grungy vinyl siding and these in-wall A/C units. Softwashing vinyl is easy enough but I’m wondering if anyone with experience cleaning around this type of in-wall A/C can advise whether I should plan on plastic-ing off these grates, or if it’s just not a concern. Covering them up seems prudent but will double my time on site so if somebody knows for sure that they’re not a concern, it would be good to know. Any knowledgable input would be appreciated.
I plan to shoot everything from the ground, high volume/low pressure application and rinsing alike.
Thanks in advance for your input.
My rule of thumb; if it’s already exposed to the elements & not part of the wash, don’t shoot soap directly at it & give it a light mist for the rinse so it thinks it’s drizzling outside. This is why we rinse with soap nozzles.
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No experience in washing these, but, I don’t think plastic-into them off will work if the building is occupied - someone’s going to turn theirs on and starve the unit of fresh air potentially damaging it. I like the above reply with if it’s already exposed let it be, but don’t shoot directly into it.
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Makes sense. Thank you for the input.
Got it. Thank you for your reply.
I did an old age home with these at every room. I washed them with a wide fan (M5) and rinsed with a wide fan while doing the walls. I didn’t want to hand wash them all, that would have been at least 60-80 units. Some I still hit lightly with a soft brush because junk was on the grills and wouldn’t loosen up with the wide fan spray. A little agitation did the trick and another wide fan spray moved the junk off. I wasn’t worried about water coming down the wall, rain does that, I was worried about hitting them dead on.
