Forum Discussion
Ron_Nielson
Aug 28, 2020Explorer
One very useful tool to have to help evaluate and fix your HVAC problem is a simple USB borescope. This is a small device which has a camera and light on on end, a cable (you decide which length but 20 ft or so works fine)which plugs into a USB port of your laptop computer. There is generic USB camera software available for free if you don't get it with your borescope, and that should cost in the neighborhood of $20.
Now with the borescope, you can remove one of your vents and with your borescope attached/taped to a stiffener ( a length of 14 ga elec wire will do, or coat hanger, etc), probe the ducts of your trailer. You will likely find that there are holes or voids in the duct that let your cool air escape into the attic above the ceiling. How you patch the hole depends on where it is, access, etc. But I have done this on several trailers and found problems on each of them. After the first vent, go to the next vent, and the next, and the next until as much of your system has been scoped as possible and repaired.
You will be surprised at what a difference this makes.
Now with the borescope, you can remove one of your vents and with your borescope attached/taped to a stiffener ( a length of 14 ga elec wire will do, or coat hanger, etc), probe the ducts of your trailer. You will likely find that there are holes or voids in the duct that let your cool air escape into the attic above the ceiling. How you patch the hole depends on where it is, access, etc. But I have done this on several trailers and found problems on each of them. After the first vent, go to the next vent, and the next, and the next until as much of your system has been scoped as possible and repaired.
You will be surprised at what a difference this makes.
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