They definitely don’t sound like the cats ass.
The reason why I was pondering the idea was I can’t plug in where I park in the winter with a trailer. Will have to re-think my situation.
Some guys love them and swear by them others don’t. You might get lucky and never have an issue.
For myself personally, it’s not worth the 1500
Bucks give or take to get one installed for those very rare “what if” situation. They seam to work good until that minus 30 range. Then they freeze up and leave you scratching your head lol