2021 TAB 400 under sink hose.

SgtYork

Had my TAB for a week and finally got to look it over a little better. Can anyone tell me what the hose is for under the sink? When I first looked at the 400 the sink was missing and was on order. It was installed and I picked up the camper but did not notice the hose. Any help would be great. Thanks

qhumberd

That appears to be the bleeder hose for the Alde system that heats with glycol. You would likely not mess with it unless you had air in your system and then only if you are familiar with the procedure. Others will likely have more detail. I think I saw this hose in another picture of a 2021 that was having issues with air lock in the Alde system.

SgtYork

Thank you qumberd!!