How Many BTUs Will A 3/4" Support

[D45]

Hypothetical here..........I have a 3/4" NG line (black pipe) running from my basement, through the crawl space and into the garage

This line is for my 45,000 BTU heater, which heats the main shop area

I would estimate the total length is 55' for this current setup

I have a small back portion of the shop (maybe 15x12), that is separated by a sliding barn style door. I am wondering if I can mount a small NG radiant/infared heater and use a "T" fitting, to run a short extension line and feed a small secondary heater?

 

[HoosierBuddy]

GasCalc says 55 feet of 3/4" steel will flow 200,000 BTU's with 0.5 inches w/c pressure drop.

You should be fine.

Phil

 

[D45]

Thanks!

 

[Richard Cranium]

lots left over to spare.

 

[D45]

Well instead of adding a second heater and adding an extension to the gas line, I just bought a bought a heater with more BTUs (75K) and a much longer heat throw (38' vs 26')