Take a look at how long and exposed the hoses are from the heat source to the dash fan and I think you’ll see at least some of the reason. I put insulation over any hose I could reach and it did help. I doubt it’ll ever be hot in the winter.
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2016 Berkshire XL 40A towing 2020 Jeep Wrangler unlimited.
Prior to this Jayco fifth wheel: 24' Eagle, 30'Designer, and 40' Jayco pinnacle.
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