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Short segment of ? undersized gas pipe cost and performance
Im having a tankless water heater installed with two varying recommendations/bids.
I have a difficult to access black iron reducing T 1" x 3/4" x 3/4" 35' from the 8"wc source.
The 190 btu tankless is the longest run at 45'
One installer wants to upsize from the t to 1" black iron for the additional 10ft to the tankless. In essence i would have 35' at 1" then 4" at 3/4" then 10' at 1 in
The other installer want to change the T to 1" x 3/4" x 1". Their bid is $1200 more than the other intstaller and says it is necessary while the first stays it is not.
So would a 4" segment likely impact performance
Thanks for any help