Gas Service Replacements & New Installations

Why Gas Services Need Replacement

Common reasons include:

• Underground gas leaks
• Severe pipe corrosion
• Aging service materials
• Physical damage
• Multiple previous repairs
• Inadequate gas capacity
• Property redevelopment
• Conflicts with new construction
• Significant appliance additions

A localized leak does not always require replacement of the entire service.

Pressure testing, leak detection, and evaluation of overall pipe condition help determine whether repair or replacement is more appropriate.

Gas Load Calculations Matter

Gas piping needs to deliver enough fuel to every connected appliance under expected operating conditions.

Sizing considerations include:

• Appliance BTU input
• Total connected demand
• Pipe length
• Available gas pressure
• Number of branches
• Fittings
• Future equipment

Simply matching the diameter of an older gas line may reproduce an existing sizing problem.

A new gas service should be sized according to actual system demand, not automatically according to the dimensions of the pipe being replaced.

This becomes especially important when additional appliances are being installed.

Residential Gas Service Installation

Residential systems may supply:

• Furnaces
• Water heaters
• Ranges and ovens
• Dryers
• Fireplaces
• Pool heaters
• Outdoor kitchens
• Generators

Adding several high-demand appliances can change the capacity requirements of both the service and downstream piping.

Commercial Gas Services

Commercial facilities often require much greater capacity.

Restaurants, hotels, apartment buildings, laundries, industrial facilities, and commercial kitchens may contain multiple high-BTU appliances operating at the same time.

A commercial gas service therefore needs to be evaluated as part of the entire fuel-distribution system.

Operational downtime is also important. Gas service replacement can affect numerous tenants or critical equipment, making project coordination essential.

Underground Gas Service Replacement

Buried gas piping should be routed with consideration for buildings, utilities, hardscape, landscaping, and future access.

Existing underground lines may also need to be accurately located before excavation begins.

Appropriate underground materials and installation practices are critical to long-term performance.

Isolation and Future Maintenance

A new gas service provides an opportunity to improve shutoff arrangements.

Logical isolation points can make future maintenance and appliance replacement less disruptive.

Testing Before Service

New or modified gas piping should be verified before normal operation.

Pressure testing and any required utility or inspection procedures help confirm system integrity.

A reliable gas service is more than a pipe between the meter and the building. It is the foundation of the entire downstream gas system.

Proper capacity, suitable materials, thoughtful routing, appropriate isolation, and verification all need to work together to create a safe and functional residential or commercial gas supply.