Sizing a New Gas Line: Altitude and the Meter
A gas line installation Brighton CO job is sized from the total demand of everything on the line, the length of the longest run and the pressure the utility delivers. Undersized pipe is the classic mistake. The new range works, but the furnace starves when both run on a cold morning.
Why altitude comes up in Brighton
Brighton sits at about 4,984 feet, and the City's own design criteria apply an altitude correction for heating load. As a general principle, gas appliances are rated for sea level input and the manufacturer publishes the change for elevation, sometimes through an orifice or a setting. The pipe sizing tables use the appliance input, so the plumber needs the nameplate, not a guess. Read the manufacturer's high altitude instructions for any new gas appliance before it is lit.
Meter side versus owner side
Xcel Energy supplies natural gas in Brighton. The utility operates the meter and its inlet valve, and the house side piping is inspected and tagged before service is turned on, per Xcel's builder guide. Where the utility's responsibility ends and yours begins can depend on the service and the address, so check with Xcel before you assume a line is theirs or yours. A plumber should not touch the meter set.
Pressure testing before anything is lit
- The plumber caps every open end and isolates the appliances so the test does not stress a regulator or valve.
- The piping is pressurized with air or an inert gas, never fuel gas, to the level and for the time the adopted code and the inspector specify.
- The gauge is watched for a drop. Temperature swings in a cold garage can move a reading, so a careful plumber accounts for that.
- Joints are checked with a leak detection solution, not by nose or by flame.
- The inspector witnesses or reviews the test, and only then is the line connected and purged.
The City adopted the 2021 International Fuel Gas Code effective January 1, 2023, and that is the edition the plumber and the inspector work from. The City has said it plans to move to a newer edition, so ask which one applies on the day your permit is issued.