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08-08-2016, 04:18 PM
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#1
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New Member
2016 Interstate Grand Tour Ext
Mobile
, Alabama
Join Date: Aug 2016
Posts: 3
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2016 Interstate EXT Air Conditioner
Has anyone found a way to lessen the noise of the air conditioner? There is hardly any sound difference between the low fan and high fan. We are in the deep south where temps are in the high 90s and low 100s with matching humidity and air conditioning is a necessity. Thank you.
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08-08-2016, 04:34 PM
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#2
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Rivet Master
2011 Interstate Coach
Overland Park
, Kansas
Join Date: Aug 2011
Posts: 2,798
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Welcome to the AirForums.
Besides the fan noise, you have the compressor rigidly mounted to the roof which is like a large speaker diaphragm. Wait 'til you run it w/ the generator on. AFAIK, no one has come up w/ a noise reduction for the roof mounted A/C.
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Glass half full or half empty to an engineer is the glass is twice as big as it needs to be.
2011 Interstate SOLD! Upfitted 2017 Transit 350. SOLD!
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08-08-2016, 04:35 PM
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#3
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Rivet Master
2017 Interstate Lounge Ext
Northern
, California
Join Date: Aug 2016
Posts: 1,299
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Check out this link: Link to external A/C unit install
It's sorta buried in another thread, but hopefully the OP will start a new thread and put this info in there so it's easier to find.
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08-08-2016, 10:13 PM
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#4
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Rivet Master
2016 Interstate Grand Tour Ext
Bellevue
, Washington
Join Date: May 2016
Posts: 689
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A portable unit with some way to vent outside seems to be the ticket. The other poster cut a hole in the chassis. But how about finding a way to vent through a side window?
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08-08-2016, 10:56 PM
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#5
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Rivet Master
2011 Interstate Coach
Overland Park
, Kansas
Join Date: Aug 2011
Posts: 2,798
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Quote:
Originally Posted by amirm
A portable unit with some way to vent outside seems to be the ticket. The other poster cut a hole in the chassis. But how about finding a way to vent through a side window?
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I'll bet a sheet metal guy could fab a hood that would fit over one or two of the crank out windows in back and magnetically attach to the body.
__________________
Glass half full or half empty to an engineer is the glass is twice as big as it needs to be.
2011 Interstate SOLD! Upfitted 2017 Transit 350. SOLD!
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08-09-2016, 09:35 AM
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#6
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Rivet Master
2024 Interstate 19
Fulton
, Maryland
Join Date: May 2010
Posts: 3,883
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Quote:
Originally Posted by 73shark
I'll bet a sheet metal guy could fab a hood that would fit over one or two of the crank out windows in back and magnetically attach to the body.
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Yes - you could make a panel the same size of screen on the rear side windows on each side. The screen pops out easily. But the required 4" air duct might get in the way of the sleeping area.
- - Mike
2013 Interstate Lounge EXT on 2012 Sprinter
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- - Mike
--------------------------
2024 Airstream Interstate 19e AWD
Previous: 2013 Airstream Interstate 3500 Ext Lounge
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08-09-2016, 03:04 PM
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#7
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Rivet Master
2011 Interstate Coach
Overland Park
, Kansas
Join Date: Aug 2011
Posts: 2,798
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I thought it would be on the outside. Shaped like a boot for a floor register in a house. One for cold air in and the other for the return to the outside unit like a system on recirc.
Something like this times two:
Might be lucky enuf to find something that already fits.
__________________
Glass half full or half empty to an engineer is the glass is twice as big as it needs to be.
2011 Interstate SOLD! Upfitted 2017 Transit 350. SOLD!
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08-09-2016, 07:00 PM
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#8
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Figment of My Imagination
2012 Interstate Coach
From All Over
, More Than Anywhere Else
Join Date: Dec 2011
Posts: 10,868
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Quote:
Originally Posted by 73shark
I thought it would be on the outside. Shaped like a boot for a floor register in a house. One for cold air in and the other for the return to the outside unit like a system on recirc.
Something like this times two:
Might be lucky enuf to find something that already fits.
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Might have to modify that type of duct to account for the fact that the windows don't crank open a full 90°. Either that or get ducts big enough to fit over the glass and wrap around the opened windows, then seal to the glass with sticky-backed Velcro…
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I thought getting old would take longer!
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08-09-2016, 08:21 PM
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#9
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4 Rivet Member
2015 28' Flying Cloud
Newtown
, Pennsylvania
Join Date: Jan 2015
Posts: 315
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The OP wants to lessen the noise from his air conditioner, not replace it.
Bruce
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50 amp, Awning package
2015 Ram 2500 6.7 TD, Blue Ox 1000 lb.
400ah LiFePo4, 800 watts solar, 2x eu2000i Propane
PD9160 converter, Prosine 1800 inverter
2x Victron 100/30 Smart Solar, Victron Smart Shunt
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08-09-2016, 08:37 PM
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#10
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Figment of My Imagination
2012 Interstate Coach
From All Over
, More Than Anywhere Else
Join Date: Dec 2011
Posts: 10,868
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Quote:
Originally Posted by AstroBruce
The OP wants to lessen the noise from his air conditioner, not replace it.
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But as long as the rooftop air conditioner is physically attached to the van and is not ducted, there is no practical or cost-effective way to reduce the noise level. Hence the suggestions about earplugs and separate free-standing A/C systems.
__________________
I thought getting old would take longer!
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08-09-2016, 08:47 PM
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#11
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Rivet Master
2011 Interstate Coach
Overland Park
, Kansas
Join Date: Aug 2011
Posts: 2,798
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Quote:
Might have to modify that type of duct to account for the fact that the windows don't crank open a full 90°. Either that or get ducts big enough to fit over the glass and wrap around the opened windows, then seal to the glass with sticky-backed Velcro…
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Like I said it would be something a sheetmetal guy could custom fab. I thought magnets would be a good attachment method if they were covered so they didn't scratch the paint.
__________________
Glass half full or half empty to an engineer is the glass is twice as big as it needs to be.
2011 Interstate SOLD! Upfitted 2017 Transit 350. SOLD!
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08-14-2016, 04:26 PM
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#12
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1 Rivet Member
2014 Interstate Ext. Coach
Sanibel
, Florida
Join Date: Apr 2016
Posts: 17
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The add on A/C unit was a bit complicated but the final project turned out good. It is a standard room window a/c, 6,000btu, that I carry behind the lounge---weighs about 60#--so it is easy to set on the ground upon arrival at my campground. After hooking up the 110V power, I plug in the a/c and turn it on with the remote. The unit had to be modified to have a simple 4" dia room air input and a similar cold air output. I did that by removing the plastic shroud and making two sheet metal manifolds, one for cold air and one for return air. (It helps to have sheet metal fabricating capability.) The remaining problem was to then run two 4" flexible pipes into the back floor of the AI. This was done in the extreme back corners of the coach with tight fitting 4" pvc components. (Perfect fits and extra care in sealing keeps road odors out while driving.) It takes all of 5 minutes to set it up or take it down in the am. The procedure is this: When setting up for the night I
have both a/c units running---the loud one set at 78 degrees and the quiet one set at 74. By the time we crawl in bed the loud one cycles OFF and only the quiet one runs. The extreme back of the coach is the only place where it is 74---but that's OK.
“How about some pictures?”
I started with a standard 110V window A/C unit, 6,000 BTU bought at Home Depot, $175. The unit fits right behind the lounge for travel (Pic 1). The cold air output is on top and the return air duct is below.
Pic 2 shows the A/C Unit on the ground with the flex hoses hooked up to the AC unit. The next step would be to hook up the other end of each flex hose.
Pic 3 shows the location where the cold air hose comes through the floor---right back in the extreme corner of the AI. When the carpet is pulled back (Pic 4) the 4” dia seal is exposed. Remove the seal and (Pic 5) the PVC pipe fitting is exposed. The return air fitting is in the other back corner of the AI.
Cutting the two holes in the floor took some time but worked out just fine. The beauty of the PVC fittings is that they are perfect friction fits. Fittings were located so the seal would be perfectly flush with the floor, no bump in the carpet.
This is a small unit and WILL NOT cool the whole AI coach. But where we sleep it is cool and comfortable and very quiet.
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08-15-2016, 07:18 AM
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#13
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Trying to Retire
Decatur
, Illinois
Join Date: Jul 2013
Posts: 342
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Quote:
Originally Posted by markc12v30
The add on A/C unit was a bit complicated but the final project turned out good.
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Wow! Good job. Have to admit I've passed on weekend camping trips in the heat because the noise of the AC is unbearable.
Mike
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Mike
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If you work until you have everything you 'WANT' - it will probably be too late to enjoy it.
Live in the Moment and enjoy today.
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