I am adding a natural gas appliance at my home and trying to determine if I need a larger capacity meter. My total load will be around 500,000 BTU (500 cubic feet per hour) if everything is on.
The specs on my meter (Equimeter R415) are listed as:
415 cfh at 1/2" w.c. diff
900 cfh at 2" w.c. diff
I know w.c. stands for water column but how do I know if I have a 1/2" diff or a 2" diff and what exactly is measured by this diff?
I've tried asking my gas company but they are no help.