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02-05-2006, 04:14 PM
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#1
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Seasoned Camper
Join Date: Sep 2005
Location: Abingdon
Posts: 75
M.O.C. #4626
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Heating System Filter?
Has anyone installed a filter in the heating system air return? It seems odd that there isn’t one there.
Ed
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02-05-2006, 04:58 PM
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#2
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Montana Master
Join Date: Aug 2004
Location: Fallon
Posts: 6,064
M.O.C. #1989
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Ed
I remember reading that there should not be a filter as these furnaces weren't designed for them.
Happy trails....................
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02-05-2006, 05:11 PM
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#3
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Montana Master
Join Date: Jan 2004
Location: Down the Road
Posts: 5,627
M.O.C. #889
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My owners manual stated the same as Sue had mentioned. Do not use one...
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02-06-2006, 03:23 AM
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#4
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Montana Master
Join Date: Dec 2003
Location: Colorado Springs
Posts: 578
M.O.C. #718
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I think this has beed talked about before, I spoke with my friend that is a Heat/Air Tec (retired) he told me that seems stupid to not have a filter the company wants it to brake, you can either put a filter on or open it and clean more often,the book dosent tell you to clean it out either.Mine got overheated from the dust and not being cleaned in 11 months and burned up the computer card.(the repairman told me) He told me to just don't restrict the flow of air, put a loose weave filter on, I bought a cut to fit one and some spacers to raise the grill 1" and slide the filter in wash it every month and 4 months now no trouble. I also looked in the book and on the heater company web site and they tell you not to restrict the air flow in any way with vent register covers that close on filters. So if you use them and are on warranty take them off prior to calling the repairman.
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02-06-2006, 06:11 AM
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#5
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Montana Master
Join Date: Feb 2005
Location: Osmond
Posts: 673
M.O.C. #3160
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I also have a cut-to-fit filter in ours, the one we got is from Wal-Mart cut to fit 20x30x1 Naturalaire. I can get two out of it, has been working well, just what I have done. Larry & LaVonne
__________________
LARRY & LAVONNE HUMMEL
2018 3811MS
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02-06-2006, 06:44 AM
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#6
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Montana Master
Join Date: Jan 2005
Location: North Ridgeville
Posts: 20,229
M.O.C. #2839
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The furnace in our terry TT did not have a filter and after about two years the furnace overheated and shut down due to dust and dirt.Took awhile to clean it up and another camper friend made me up a filter and installed it.Checked it about every two months or so and never had a furnace problem for the rest of the life of the camper..Note that the A/C had a filter and that one got fairly dirty on a regular basis. Also used that foam filter on the floor vents ( allergies) and never had a problem.Plan to do the same thing with the 3400 Unless somone can explain WHY a filter is not needed...Humm..A good question for the Keystone rep at the RV show..will write it down..
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02-06-2006, 04:34 PM
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#7
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Montana Master
Join Date: Sep 2003
Location: Forestville
Posts: 6,025
M.O.C. #496
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I agree that the furnace really needs a filter, but then I am a HVAC guy. In our Montana the return air is a cavity under the sink area. The furnace is located there also and it has a relief cut on three sides of it. So if you really wanted to filter the return air you would have to attach filters to the three sides in order to protect the furnace. If you just put it at the grille you would not protect it because it pulls in outside air from other areas. Hope this makes sense to you. I was looking at a 3400 the other day and it is no different regarding pulling air from a cavity, just not under the sink. I think the reason that the manufacture suggest that you do not use a filter is that if you did it properly you would have to get access to the furnace in order to clean it and that is very difficult for most people.
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02-07-2006, 02:06 AM
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#8
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Montana Master
Join Date: Jan 2005
Location: North Ridgeville
Posts: 20,229
M.O.C. #2839
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Dhenry..what you are saying makes sense.My guess is that the reason the manufacturer does not put a filter in is that it would be a added expense and difficult to do.When we get our 3400 and see how it is set up we will get back to you on advise on how to install a effective filter.
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02-07-2006, 03:32 AM
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#9
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Montana Master
Join Date: Dec 2003
Location: Colorado Springs
Posts: 578
M.O.C. #718
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You are right DHENRY, mine is under the stove and pulls air from the entire cavity, what I did is close off the opening on the side so it will only pull air from the grill opening and not from the rest of the cabnet area.
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02-07-2006, 04:36 AM
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#10
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Montana Fan
Join Date: Feb 2005
Location: Moultonborough
Posts: 449
M.O.C. #3268
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On the 3400RL, I believe most of the air is pulled in thru the slotted piece of wood attached to the front of the bottom step.
That is were the majority of the air come from.
I believe that you could attach a filter to the piece of wood.
But if you cause too much of a restriction then I might pull more air from the basement area.
Just my thoughts!
So I guess if you smell something funny, you should check and see what you may have rotting in the basement area.
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02-07-2006, 04:42 AM
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#11
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Montana Master
Join Date: Oct 2005
Location:
Posts: 1,568
M.O.C. #4890
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My 06 2955RL has the furnace in the basement behind a panel on the entrance side. This compartement runs the width of the basement and behind a panel on the opposite side is the hotwater tank. This compartement is completely sealed except for the wooden grill under the stairs where the furnace is drawing its air. It would be simple to attach a filter to the inside of this wooden grill so I will probably do this.
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02-07-2006, 06:19 AM
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#12
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Montana Master
Join Date: Jan 2004
Location: Down the Road
Posts: 5,627
M.O.C. #889
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My furnace is under the island counter along with my hot water heater. If memory is right, I have one grill on the side of the island where the furnace draws it air. I might be able to add a filter on that grill, will be adding this to the list of things to check this spring.
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02-07-2006, 10:57 AM
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#13
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Montana Master
Join Date: Dec 2004
Location: Bum F Egypt
Posts: 979
M.O.C. #2733
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Installed the filter on the furnace this week. It turned out to be a simple 1 hour job on my 05 2955RL. I opened the return air grid then removed the 1x1 board at the bottom of the return opening and installed a 16x20 inch filter. The opening is an exact fit of the filter. The piece of wood was put back in behind the new filter to hold it in place. Replace the grid and your done.
Also search Heater Filters
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04-17-2006, 05:50 AM
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#14
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Montana Master
Join Date: Dec 2003
Location: Colorado Springs
Posts: 578
M.O.C. #718
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Good news from Suburan, I had my computer card go out 2 months out of warranty and cost me $300 for a repairman to fix so I sent a email to Suburan and told them the repairman told me that it shouldnt have went out he thought it was defective, they told me to mail it to them to test, so I did, got a letter from them today and a check for $95. they said that they cant tell if it was defective or not so they would pay for the card but were unable to pay for the labor, well a little is better than nothing.
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