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11-13-2010, 07:08 AM
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#1
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Member
Workhorse Chassis Owner
Join Date: Feb 2009
Posts: 91
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A/C Filters
I have two roof mounted Dometic Duo-Therm Air Conditioners Model 620515.321 on my 2004 Kountry Star. I have read the post about cleaning the evaporator coils and the air filters inside the coach.
I can't find any filters. The post shows filters in the return air vents (round). I don't have any. Are they missing?
If I need these filters can anyone tell the part numbers and where I may buy them.
Thanks
__________________
Richard
2004 Kountry Star 3740, W-22, 8.1L Gas
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11-13-2010, 08:09 AM
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#2
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Senior Member
Newmar Owners Club
Join Date: Apr 2010
Posts: 460
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The filters are thin foam material. You should be able to get a suitable substitute at Depot or Lowes. I saw them at Camping World also. The louvered vent removes by pulling straight down. At least that's the case in our '04 KSDP.
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11-13-2010, 04:05 PM
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#3
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Senior Member
Newmar Owners Club
Join Date: Jul 2006
Location: Wellington, Florida
Posts: 13,599
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Newmar has them in stock. This is one item that was reasonably priced. You'll need one for each return vent.
__________________
Gary
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
The Avatar Is Many Times Around The USA
Nobody Knows Your Coach Like Somebody Who Owns One Just Like Yours
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11-13-2010, 09:47 PM
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#4
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Senior Member
Join Date: Apr 2010
Posts: 691
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Newmar sels them for less than a dollar each. They are a very thin porous foam material. As suggested you can purchase material and cut them to fit. Or contact parts dept at Newmar
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11-14-2010, 04:57 PM
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#5
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Member
Join Date: Jan 2006
Posts: 71
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You might want to consider 2 sets that way you can change them, wash set 1 while set 2 is getting used, etc. If you are operating the A/C regularly you will probably need to change them ever couple of weeks or so.
Mike
__________________
2007 Tiffin Phaeton MBE,US Gear tow brake
Master Certified RVIA Tech
Ford Ranger toad (worktruck)
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11-14-2010, 08:52 PM
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#6
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Senior Member
Join Date: Apr 2010
Posts: 691
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The RVGuy has the right idea. I have a extra set and change them and then wash out the dirty set. Cuts down chances of breaking the louvres. They can not be bought seperately.
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11-15-2010, 03:38 AM
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#7
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Senior Member
Newmar Owners Club
Join Date: Oct 2009
Posts: 10,310
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i cleaned mine this weekend and for some reason i was missing one filter in the bedroom,my wife suggested that i cut a dryer sheet to fit and try it as it will not only filter but smell good. worked great!
__________________
2012 Essex 4544 2011 Jeep JK, M&G Braking, 2014 MTI 27' Hog Hauler, Wireless brake control, 2006 Ultra & 1989 Springer, 2003 Harley-Davidson
FLHR Road King Anniversary
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11-15-2010, 05:31 AM
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#8
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Senior Member
Monaco Owners Club Texas Boomers Club
Join Date: Jan 2009
Posts: 2,529
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Lowes or Home Depot will have a roll of blue "fiberglass filter material" in the a/c filter area. My roll is 3' X 20' and it says 1" thick however more like 1/2". That easily "squeezes" to 1/8" thick when installed.
Just cut 10 filters last week as we throw them away (wouldn't wash easily)
Have used this roll for 5+ years and still over 1/2 remaining.
__________________
Hal & Ginny Miller '04 Beaver Santiam PRT40
'04 Saturn Vue - US Gear Brake - Blue Ox tow
3"girls" (2 Irish Setters - 1 Retriever) - RIP Annie & Emily (12/26/2017)
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11-15-2010, 07:12 AM
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#9
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Moderator Emeritus
Nor'easters Club Workhorse Chassis Owner iRV2 No Limits Club
Join Date: Oct 2004
Posts: 30,785
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A foam filter preferably 1/8" will filter air through easier than a dry sheet which has a tighter weave.
You want air to move as fast as possible for quicker cooling.
More information in keeping your AC system in top condition supplied by Oemy.
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11-15-2010, 10:27 AM
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#10
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Member
Workhorse Chassis Owner
Join Date: Feb 2009
Posts: 91
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Thanks for all the good information. I think I'll try the Lowe's route because I can imagine what Newmar's shipping cost will be.
__________________
Richard
2004 Kountry Star 3740, W-22, 8.1L Gas
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11-15-2010, 12:02 PM
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#11
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Senior Member
Join Date: Sep 2010
Posts: 216
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AC filters
Tip for removing the round louvered vents to replace the filter: twist the vent as you pull down. By doing that you're less likely to break the plastic things that hold the vent into the ceiling. I got this tip from Jeannie at the Newmar parts store---and it works.
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11-29-2010, 10:53 AM
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#12
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Member
Workhorse Chassis Owner
Join Date: Feb 2009
Posts: 91
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I started to install the filters in my air conditioning vents this weekend by removing the plastic vent cover (no problem). My question is - what's holding the filter in place? It appears that it may be sucked into the ductwork if it gets very dirty and air flow is restricted. Since my unit has no filters, I have nothing to compare anything to. Do the filters just lay in the round plastic vent cover and friction keeps them in place?
Thanks
__________________
Richard
2004 Kountry Star 3740, W-22, 8.1L Gas
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11-29-2010, 11:21 AM
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#13
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Senior Member
Newmar Owners Club Ford Super Duty Owner
Join Date: Jun 2009
Location: West Michigan
Posts: 920
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Richard - There is a 3 leg support for the center snap for the vent grille that the filter lays up against. It is essentially trapped between the support and the grille.
__________________
Dave
2010 Canyon Star 3647
2010 Ford Escape
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11-29-2010, 12:56 PM
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#14
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Senior Member
Newmar Owners Club
Join Date: Jul 2006
Location: Wellington, Florida
Posts: 13,599
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Hi Richard,
In addition to what Dave posted, the air flow is not that powerful. I doubt the filters could be sucked into the duct work.
__________________
Gary
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
The Avatar Is Many Times Around The USA
Nobody Knows Your Coach Like Somebody Who Owns One Just Like Yours
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