Have had two different brands over the years and both worked just fine. If you don't leave both tanks open, you can get the first one to run out at 3am and freeze to death from no furnace. Of course it will be raining that night and you have to go out in your PJs to switch over.
You can't run out from the second tank if you do your regular "rounds" of your rig in the morning to see if the regulator has turned red yet. Of course you do not turn the switch over to the second tank and make it go green until you remove the first tank to go get it refilled.
Not a problem!
