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mgrovesjai's avatar
mgrovesjai
Explorer
Jan 23, 2014

1999 Beaver Marquis AC Filter Location?

I purchased a 1999 Beaver Marquis in Sept 2013, and in addition to upgrading systems, I eventually would like to clean the air conditioning filters for a two Duo Therm Roof Air Conditioners. Prior to purchasing this 1999 version of the Beaver Marquis I had looked at numerous Marquis models, and always saw the air inlet covers in the ceilings of these models. But mine has no cutouts in its expensive wood ceiling areas. I can feel the air being sucked in at certain locations and wonder how do I access the filters? 1998 versions have the grills and I have even seen some '99 with the grills but also those that do not.

Long question short - How do I get to the air conditioner filters in this 1999 Beaver Marquis?
Class A
  • dougrainer's avatar
    dougrainer
    Nomad
    Jan 23, 2014
    mgrovesjai wrote:
    I have two Duo Therm Roof Air Units. Thanks.


    IF you have the decorative ceiling structure that has about a 2 to 3 inch gap, you remove the mount bolts hidden on the top inside area and this structure pivots down and you will see the 14 inch square filters. Can you post a pic of your interior front area ceiling? Doug
  • mgrovesjai's avatar
    mgrovesjai
    Explorer
    Jan 24, 2014
    The coach is in storage but I'll be going over to work on it today and can shoot some pictures. The coach is similar to the one shown on this RV Sales of Oregon page - http://www.rvsalesoforegon.com/rvs/motorhome/1999-Beaver-Marquis-40-776 and the wood ceiling with the 2-3 in gap is shown in pictures 11 and 12 sort of. I am trying to imagine your description of "mount bolts hidden on the top inside area". I know that the front most wood panel comes down, but above that is the other panel which could also be totally unbolted from which the air is circulated when the AC is on. I am hoping I don't have to disassemble this entire structure to simply clean/change filters. Can you tell me a little more about these hidden bolts? There are no visible rectangular cut outs in these wood ceiling panels are there are in 1 year older or newer Beavers and therefore my inability to spot the return air filters. Thanks Doug for your response.
  • mgrovesjai's avatar
    mgrovesjai
    Explorer
    Jan 25, 2014
    As I wrote in my last post, I did go out to work on the coach today, and while there, I ran my hand down along one side of the ducting work, and felt in all the holes, and felt something strange and pulled out what can best be described as a crumple up filter. Evidently with no grills in the ceiling, what they did was simply push filter material (looks like the same stuff I had on my old Winnebago Adventurer) into the air intakes. There was another on the other side, and I searched in the bathroom area (around where the other unit is mounted to the roof) and once again, the crumpled air filter material. And wow, was it dirty. I believe the gentleman who sold me the RV when he said he had no idea where the filters are. Evidently they haven't been cleaned in years. So, now I'll clean them up and turn on the fan to locate the inlets to make sure I stuff them into the right places.

    I guess since my coach was one of the first that Beaver put the elegant ceiling panels into that they didn't want to cut holes in them so this was their solutions, just place filter material over the air intakes. Perhaps it wasn't such a good idea as in later 1999 and onward they did decide to cut the holes into the wood ceiling panels.

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