What is the story w Liberty heaters?

[dude1116]

My engine takes about 7-10 minutes if I had to guess from cold to hot. It's not bad at all.

However it starts throwing heat AS SOON as the needle STARTS to get off the cold end of the scale. At highway speeds my heat nearly burns me.

 

[renegade 04]

Once mine warms up it blasts heat like no other. I have almost burned my hand on the heater it works so well.