Air conditioner on 2015 rpod 172 - Event Date: 19 May 2016

You do not want to reduce the fan speed or the coils will freeze up.

I was looking at the main blower duct (with the white plastic diverter cover inside the coach removed) you can see some alum. ducting tape the thin stuff and also some clear plastic that makes a noisy crackling sound when you touch it.

I had a roll of the thin alum. ducting tape and put it over the nosier plastic tape as the air force coming out of that main duct even on low seems to me it would add to the noise level.

With the white diverter cover that you see inside the coach removed, it is quieter and seems to me less obnoxious sounding.

I have a plan A and Plan B, to try next.

plan A involves using something to add directly under the main squirrel fan duct.

As the Rpod comes un-modified the air blast hits the inside of the plastic diverter and makes a loud (louder than with the diverter removed) obnoxious sound that by just removing the diverter cover, and the Grille inside the Main air duct (what were they thinking) lessens the sound level by a notable difference.

So if some sound proofing where installed into the inside of this cover it may be enough to reduce the Nosie level somewhat.

Maybe a piece of foam, alum. ducting tape, thin piece of wood, something to deaden the sound.

So if plan A doesn't work to what I expect, then off to plan B.

Plan B

So I want to find out, is if they sell the air conditioner diverter white plastic cover separately for this unit and how much they are.

My thought is to cut a hole in the diverter cover the same size as the duct hole.

Then get a small automotive vacuum hose slit it on one side down the length, and put/glue it around the new larger duct hole that I cut out to dress up the plastic edge.

with the cover/diverter off the fan blows mostly straight down, back toward the bathroom wall, which I'm ok with.

this would eliminate the air diversion in any direction, but the Rpod is very small and cooling it quick is not a problem even on low fan setting.

OK plan C

A potentiometer wired between the Fan's "power in" to the fan and the "fan motor" to reduce the speed to a slower or lower than the low fan setting.

There is a good mounting location for the Potentiometer on the white plastic air diverter on the front of the air conditioner there are two round circles that's a good mounting spot easy to mount.

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Is the loud sound of the air cond. Unit the fan or the compressor? if the fan, then maybe a different fan?

Maybe more isolation between the air cond. unit and the Rpod roof?

I May look at this, test with Fan only on to see how loud fan only is, Maybe more isolation of just the fan unit, or a Better ball bearing fan? 

What about a volt reducer, like a potentiometer to further lower the fan speed? Maybe get the fan speed half the speed of what it currently is on Low?

I wish I had a DB meter, hey wait I have a guitar tuner that would work, to give a starting point.

We're in the last third of a month long Pod trip to OR and CA.  We spent the last two nights in Red Bluff, CA, and the temps hovered around 100F both days.  The first day, we had driven in the heat for several hours before stopping, so the inside of the Pod was probably around 100 when we plugged in and turned on the AC.  The condenser didn't stop running for nearly four hours.  I never dreamed it would take that long to cool everything down to 70, but everything inside was still retaining all that heat, and it was almost 100 outside at 8:00 p.m.  So the 13.5k ACs are overkill in most situations but definitely not all!