[iowagold]

the one thing to keep in mind is
are they running liquid to the house or vapor?
you can have lots of btu in a 3/8 LP liquid line...
but vapor needs a LARGE dia line....

yea look at the hours per LB of lp on a gen run...

 

[iowagold]

most rural lp systems in my area are small line liquid to the house then the first stage regulator to a 1 inch or larger pipes depending if they go with
2 psi or 6-9 wc on the secondary regulator.
it all depends on how far away from the house the LP tank pad is placed.
and how the system is designed.
and how many btu the house system needs.

always use a pressure gauge to check ALL LP and NG gas lines before connection of any new equipment...
some NG systems are CNG in some areas of the usa.