i was doing some cleaning and found that my 30,000 BTU Furnace has 4 Round Ducts coming off the heater but i only have 3 Vents in the floor. There are 3 larger ducts i believe are going to those vents but there is a 4th smaller duct that is just laying under the floor but is not connected to anything.
Is there a purpose for this or should it be connected to anything?
Wondering if i should remove it and cap it off at furnace?
Many RVs come with what is advertised as underbelly heating. This is usually simply a small duct as you found that vents into the underbelly. You have three options, 1. Cap it off, 2. add a vent into the living area, 3 leave it where it is. A heated underbelly is effective only in marginally cold areas and only when you heat via the furnace.
Possibly it’s for sending heat to your water/waste compartment to help keep plumbing and/or tanks warm in colder weather?
Just guessing.
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Ken and Terry
2018 Sunseeker 2430S-CD, nicely modified and carried by a 2017 Ford E450 Sport with 6 speed Triton V-10
Former Georgetown 330TS owner for 10 years with more mods than I can count, pushed by our 2017 GMC Terrain
Yep, heated underbelly. My2016 PT TracerAir 255 had the same thing.
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Dan-Retired California Firefighter/EMT
Shawn-Musician/Entrepreneur/Wine Expert
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package
4pt Equal-i-zer WDH and 1828lbs of payload capacity
Linear Mode
