Furnace duct in reflection 337

[Beavercamp]

HI
I have a 2020 reflection 337RLS , I removed the bottom cover of the unit so I could fix a holding tank valve. I noticed the furnace had two open ports in the duct work below the floor. I could not find any loose duct work. So my question is should the duct work be open to the underside ?

Mark

[Cate&Rob]

Hi Mark,

Welcome to our owners technical forum. Typically there is a 2” flexible ductwork leading into the underbelly to keep this area warm in sub-freezing temperatures. Sometime this duct ends in a sheet metal Tee and sometimes it is not connected to anything. Post a picture if you would like further confirmation.

Rob

[Beavercamp]

Here is the photo. my other question is can I close them off

[Cate&Rob]

Here is the photo. my other question is can I close them off

Your picture is “as expected” underbelly heating ductwork. You can close these off, but this is the only means of keeping the underbelly warm in sub-freezing weather. If you need to run the furnace, you may quite likely need some heat in the plumbing area. Why would you want to close these off?

Rob

[Beavercamp]

Thanks I thought it strange a first but you make a good point

Mark

[Country Campers]

While you are under there you may want to straighten some of the duct work, or even shorten it, check for kinks or places where it may be crushed. I found a few of these in mine.

Brian