Typical Residential Gas Meters
Gas Meters come in various sizes. They must be sized properly and in accordance with the pressure requirements of the equipment being installed.
Meter capacities in standard cubic feet per hour at various pressures
| Meter Size | Low Presssure* | Standard Pressure | 2psi** |
| AL250 | 240 | 325 | 354 |
| AL425 | 425 | 550 | 1,010 |
| AL425HC | 425 | 900 | 1,010 |
| 1.5M | 1,500 | 1,500 | 1,700 |
* 0.7 in w.c. pressure drop is allowed for across rotary meters in 5.5 w.c. systems
** A fixed factor is applied by the billing system for 2psi metering. A correct instrument is required for meters 16M and greater.
Last Modified: July 13, 2026, 2:49 pm EDT