Gas Line Installation
A new gas line is a capacity project wearing pipe. Before any material is cut, the whole system's demand (every appliance's BTU rating, existing and planned) gets summed against what the meter and trunk can deliver. Lines sized to that math work forever; lines sized to 'it fits' starve the water heater every time the range runs.
This page covers running new lines and branches: kitchen relocations, dryer conversions, grills and fire features, generators, garage heaters. Connecting an appliance to an existing line is the smaller hookup job on its own page. And everywhere in gas work, the rule stands: smell gas, leave, call 911 and the utility.
How a Plumber Diagnoses the Problem
How a new line is engineered:
- The load calculation. Total connected BTU, pipe lengths and fitting counts feed the sizing tables, the calculation that decides diameters and sometimes reveals the meter itself needs upgrading. It should appear in your quote, not just in someone's head.
- Route and material. Black iron for exposed interior runs, CSST with proper bonding where flexibility earns its keep, approved coated or PE systems for buried work, each with its own support, protection and transition rules.
- Buried runs done right. Outdoor lines to grills, fire pits and generators go below the fuel gas code's minimum cover depth with tracer wire and marked routing. Utility locates come first, always.
- Valves and future-proofing. Shutoffs at each takeoff, and a word about tomorrow: adding one tee for the future outdoor kitchen now costs almost nothing; opening the system twice costs twice.
- Permit, test, inspect. New gas work is permitted work almost everywhere: the system holds test pressure on a gauge for the required duration, the inspector sees it, and gas returns with every appliance relit and verified.
Service Details & What's Included
The projects that come through this page:
- Kitchen moves and conversions. Electric-to-gas cooking, island cooktops and relocations. The range's line follows the remodel.
- Laundry conversions. Gas dryer lines where only electric existed.
- Outdoor living. Grills, fire pits, patio heaters and pool heaters: buried runs sized generously because outdoor appliances are BTU-hungry.
- Standby generators. The demanding one: generators draw large, continuous BTU and frequently force line upsizing or meter upgrades. The load calc is non-negotiable here.
- Garage and shop heaters. Branch lines to unit heaters, with the venting conversation handed to the right trade.
Frequently Asked Questions
Can one gas line serve several appliances?
Yes. That is how systems are built: a trunk feeding branches. The discipline is sizing every shared segment for the total simultaneous demand downstream of it. Adding an appliance to an existing branch without redoing that math is how whole houses end up starved.
Do I need a bigger line for a new range, dryer or grill?
The calculation answers it: the new appliance's BTU joins the system total, and each pipe segment either carries the sum or does not. Small appliances often ride existing capacity; generators and large grills frequently do not. Guessing is not a method.
Is installing a line the same as hooking up the appliance?
No. Installation builds the supply to the appliance's location; hookup is the last few feet of valve, connector and leak test, covered on its own page. Quotes should separate them so you can see what you are buying.
Can gas lines run outside or underground?
Routinely, with the right materials and rules: approved buried pipe systems, proper depth, tracer wire, protected risers where lines surface. Bare interior-grade pipe in a trench is the classic amateur find; correct buried work is a materials discipline.
Does new gas work require permits and inspection?
In nearly every jurisdiction, yes, and you want it to: the witnessed pressure test is the proof the system is tight, and the permit trail reads clean at resale. Unpermitted gas work is the one shortcut buyers' inspectors and insurers both flag.
Plan a New Line
List the appliance, its BTU rating if known, and where it lives relative to the meter.
Request a Quote for Gas Line Installationor call (800) 555-0147Only license-checked plumbers who cover your ZIP receive your request.