What is the recommended pressure for residential natural gas lines?

The recommended pressure for residential natural gas lines is typically 7 inches of water column (wc). This pressure is generally used in residential settings to ensure that appliances such as furnaces, water heaters, and stoves receive sufficient gas supply for efficient operation.

Maintaining a pressure of around 7 inches of water column is essential for safety and performance, as too high a pressure can lead to improper combustion and potential hazards like gas leaks or appliance damage. The 7-inch specification is consistent with many local and national codes that govern residential gas installations.

Higher pressures, such as 10 or 15 inches of water column, are generally more suitable for commercial or industrial applications where more gas is required for larger devices. Conversely, a lower pressure of 5 inches of water column may not provide enough gas flow for standard residential appliances to function efficiently.