Espar bunk heater not working when below 0 degrees

That doesn't really make sense. These things only pull significant voltage at startup, then they use almost no power, just running the fuel pump and fan, not more than an amp or 2. The only way they will pull a lot more is if they are cycling on and off completely which they won't do when it's that cold.

 

It absolutely is fuel gelling in the line. Heat the line/filter with some hand warmers and it will work again

 

When it’s-18 even the howes stops working. Especially on such a small line

 

It would start up fine initially when I went to bed, then about 2 or 3 in the morning it would quit, -24c one night.
I first tried just moving the connection to before the trucks low voltage disconnect, but it still would quit in the night.
Once I wired it directly it worked fine.
Batteries get cold during the night and the voltage drop along all the factory wiring was enough I guess. I'm not an engineer, but it worked in my case.

 

As long as it worked!

 

Idk if ya could or what the power draw is exactly but if you could electric tape fuel line to a water line heating cord .

 

Seems like it was a low voltage as batteries got colder, not fuel gelling issue.

Anything lower than 5 Fare height, my truck don't turn off.

Trucks quit running when its cold out, and I'm too old to stand outside trying to fix em

I don't even like freeing brake drums every morning with a hammer