Frequently Asked Questions

Pressure testing detects leaks in fittings, joints, and connections that aren't visible during installation. The line is pressurized above operating levels and monitored for pressure drop, which reveals even small leaks before gas flows through the system. This catches installation issues immediately rather than discovering them during appliance use.

LP gas operates at higher pressure than natural gas, requiring different pipe sizing and pressure regulators. LP systems use tanks refilled by delivery, while natural gas connects to utility lines. Both fuel types serve the same appliances, but existing piping can't simply switch between them without recalculating flow rates and adjusting regulators.

When the gas line installer also handles trenching, there's no coordination delay between separate contractors. The trench depth, width, and route are cut specifically for gas line requirements in one visit. This eliminates scheduling gaps and ensures the trench matches code requirements for gas piping burial depth.

Pool heater BTU rating determines minimum pipe diameter needed for adequate fuel flow. Longer pipe runs require larger diameter to maintain pressure at the heater. Undersized lines cause the heater to underperform or fail to ignite, while proper sizing supports full BTU output regardless of distance from the gas source.

Gas piping installs after hardscape layout is finalized but before countertops and appliances are set. This allows routing beneath pavers or concrete and positioning stub-outs precisely where grills and burners will sit. Running lines too early risks misalignment when the design changes during construction.

Trenching is necessary to bury gas pipe at code-required depth, but experienced installers minimize disruption by routing along property edges, under mulch beds, or following existing hardscape seams. Sod or landscaping is replaced after backfilling. Concealed routing often follows paths that avoid mature plantings and high-traffic lawn areas.

The warranty covers workmanship issues and material failures in installed gas piping systems for one year from project completion. If a fitting leaks, a connection fails, or installed components malfunction due to installation defects, both the part replacement and labor to correct it are included at no charge.

Gas permits trigger inspections that verify installations meet fuel gas code for safety. Inspectors check pipe sizing, material type, joint methods, pressure testing, and appliance connections. Unpermitted gas work creates liability during home sales and insurance claims, and some jurisdictions require tear-out and reinstallation of uninspected lines.

Indoor fireplace lines route through walls or crawlspaces with protection from physical damage, using black iron or CSST approved for interior use. Outdoor fire pit and fire bowl lines run underground in Schedule 40 pipe or tracer-wire-equipped polyethylene rated for burial. Outdoor routing also accounts for landscape grading and water drainage patterns.

Evacuate immediately without operating light switches, appliances, or anything that creates sparks. Once outside and at a safe distance, call your gas supplier and Performance Mechanical's 24/7 emergency line at (615) 533-3846. Don't re-enter until professionals verify the source, repair any leak, and confirm safe conditions.

Existing lines can be extended if the original pipe diameter has capacity for added BTU load from new appliances. An installer calculates total BTU demand across all connected devices and verifies the main line and meter can supply the combined flow. Undersized mains require upsizing from the meter or tank.

New construction allows planning optimal gas line routes before walls close, while remodels require creative routing around existing structure, utilities, and finishes. Experience with both scenarios means installers recognize when to fish lines through walls, when to surface-mount with concealment, and how to integrate gas piping without compromising structural or aesthetic elements.