This product is super easy to install and it worked right out of the box just in time for the winter temperature drop.
This was easy to install, but wished there were more clear instructions on which end goes where. I got it working, and it's been great so far!
Warms right up when plugged in, stayed warm all night. Unless you have a very large RV, 25 feet can be a lot - I've never used more than 10 feet of hose with my 20ft trailer. 1st test run was 17 degree night and nothing froze! A great value!