The little giants are underpowered and overpriced.
I bet you blame the tire manufacture when get a blow out because you curb your tires so many times the side walls give out...I have 20+ year old little giants working like the day they went into use. Now their customer services is the worst ever but the product...those things just work and work I have yet to see any issue with one that wasn't user error...wait I take that back the igniter garbage..this things last about 6 months.best to just take them off and replace them with the electronic high dollar one from the start.other then that... You broke it... 
post. Sorry if it is true. Now if it is true I stand by what I said. I can't stand little giants customer. Service. It is terrible but they make a pretty damn good heater. Why their services sucks they know they have the market cornered and could care less about you or I complaining about them not caring. If you didn't freeze it then the only way I know of for it to leak is if you fired it up with no water in it and cooked all the solder out.if that happened it can be fixed. Take it out of the truck and take the shroud off. Hook it to your garden hose and film where it is leaking.A plumber or a heating and air guy or even a radiator shop can re solder it if that is adhere it is leaking and unless it froze or it was over pressured there so be no reason for the coil to have split. Either way you need to find out where it is leaking. And in the future don't act like "Waldo" when You have a serious issue and you won't be treated like "Waldo" still consider you a friends even after what you said in the PM
You are really showing your decorum, civility and integrity (Or lack of) With this post. LOL!!! Could be a welding pin hole (A pin hole is an easy fix ), Freezing can show up later due to pump or road vibrations, We just had 3" of snow 2 weeks ago and freezing temps last week and you are not that far from me. BTW: You only wish you could be as "Broke" as me. It would be a giant leap forward for you.Yoakum you stupid BD. No I didnt freeze the coil you moron. Just started leaking yesterday. Kept the insulated box truck toasty at 55 degrees. Weather has been fine for the last month. Little Giants are junk. Yoakum I have know clue why even clean carpets. Your such a Genius. But stuck in Lincoln Nebraska with 800 other BD Carpet Cleaners.
GOLDEN bOY