I'm looking at extending my existing gas line to the other end of my basement. The line comes into the house as 1" but doesn't go completely to the other end. I'm looking at around 40' of pipe to run.
I only need 3/4" on the other end, so I'm not sure what's the better option here in terms of pressure, supply, and cost. The current 1" line ends at a T with 3/4" going down to my furnace and 1/2" running forward about 10' and then up to my kitchen range. So I'm guessing in theory I could remove the range line (replace the T) and extend out from there with my new line. Then closer to the range T up to reconnect the 1/2".
So with that; should I extend on with 1" line and just connect up my 3/4" at the end and the 1/2" at the first third of the line, or extend with 3/4" all the way to the end and again reconnect the 1/2" where it goes? So generally, do I downsize the line to reach the end or extend what I've got? Will either help or hurt the pressure, supply, etc.
I do know that the difference in cost of the pipes themselves will be around $7. So I'd save $28 by running the 3/4". But is it better to run the 1" so that more could branch off of it later on if needed?