24/7 Emergency Line Open
Gas Line Installation and Repair in Centennial: Leaks, Hookups and New Lines
If you smell gas right now, stop reading, leave the building and call 911 from outside. Natural gas lines carry fuel at low pressure to the furnace, water heater, range and dryer, and a leak at any joint is a fire and health hazard. Everything after the emergency, finding the leak, repairing it, or running a new line for an appliance, is work for a licensed and insured plumber with a pressure test at the end.
- Licensed and insured plumbers
- Same-day service when available
- 24/7 emergency dispatch
Signs of a gas leak and what to do first
Natural gas is odorized so that people notice a leak. The smell is often described as rotten eggs or sulfur. A leak can also hiss or blow, make dust or debris move near a buried line, or kill a patch of grass or plants for no other reason. Pilot lights that keep going out and burners that burn yellow are warnings too.
The Colorado Public Utilities Commission gives the response in plain terms: leave the building immediately, do not switch lights on or off, do not use a phone while inside, leave doors open as you exit, and call 911 and the utility from a safe distance. Stay out until the utility or the fire department says it is safe.
- Leave the building at once, taking everyone with you.
- Do not use switches, lighters, phones or garage door openers while inside.
- From a safe distance, call 911 and then your gas utility.
- Wait for responders to clear the building, then call a plumber to find and repair the cause.
Do not try to find a leak with a flame. A soapy water test on an accessible joint is a plumber's check, done after the utility has made the area safe. Never relight a pilot you cannot account for.
Gas line repair: finding the leak, fixing the joint, testing the line
Gas leak detection and repair is mostly a search of joints, because most gas leaks occur at joints, fittings, flexible connectors and valves rather than along a straight pipe. A plumber locates the leak with a gas detector and a soap solution, replaces the failed fitting or section, and tests the repair before the system is turned back on.
A damaged section is replaced, not wrapped. The repair is judged by the pressure test, which holds the line at a set pressure and watches the gauge. A line that holds is a repaired line. A line that does not is traced again until it does.
Gas appliance acting up but no smell? Call for an inspection
Describe the appliance and what changed. A plumber serving your area is sent where one is available.
Gas line installation for new appliances and moved equipment
Natural gas plumbing for a new appliance is sized for the appliance at the end of it and for the others already on the same line. A longer run, a bigger load or an added fitting can strain the pipe that was fine before, which is why a plumber checks the total demand, not just the new connection.
The same sizing question comes up when a gas water heater is replaced with a bigger one or a tankless model, which is covered on the water heater installation page. A shutoff valve at each appliance is part of a clean install, and it lets you stop one appliance without closing the whole house.
| Appliance | What the install includes | Check before work |
|---|---|---|
| Range or cooktop | Shutoff valve, flexible connector, leak test | Fuel type and the range location |
| Clothes dryer | Shutoff valve, connector, vent check | Distance from the existing line |
| Fireplace or log set | Rigid line, valve, leak test | Manufacturer clearances and venting |
| Outdoor grill or fire pit | Underground or surface run, valve, quick connect | Private line locate before any digging |
| Standby generator | Larger line and a regulator | Total load on the meter |
Black iron, CSST and other gas pipe materials
Black iron is the traditional threaded steel pipe for gas. Corrugated stainless steel tubing, called CSST, is flexible and fast to run through framing, and it has its own installation rules, including bonding. Copper is used in some older homes for gas, and it can corrode in certain conditions, so a plumber will say what a repair has to match.
The Colorado Geological Survey notes that gypsum-rich soils can corrode buried metal pipe, which is a reason to have an old buried gas pipe inspected rather than assumed to be fine. A plumber will tell you whether a buried line needs replacing or protecting.
Adding a range, dryer, fireplace or grill line? Ask what it needs
Give the appliance and its distance from the meter, and the dispatcher explains the next step.
Permits, inspection and yard lines: who marks what before digging
Gas work is the kind of job that calls for a permit and an inspection, and the Centennial Building Division, (303) 754-3321, is the authority for addresses in the city. Ask the plumber who is pulling the permit and when the inspection happens.
Digging for a gas line has its own rule. Colorado 811 marks public utility lines only, and it does not mark private ones such as a line to a backyard grill or fire pit. The owner hires a private locator for those. The marks matter for every trench, and a plumber should call before starting, not after something has been hit.
Propane is a separate fuel with its own tank and regulator, and a plumber can connect appliances to it but the tank supplier is the one who handles the tank. In an emergency, the homepage has the 24/7 dispatch line.
Gas line questions, answered
What should I do if I smell gas outside my house?
Move away from the area, then call 911 and your gas utility from a safe distance. The Colorado Public Utilities Commission advises the same for indoors and outdoors: do not turn anything on or off, do not use a phone near the odor, and wait for the utility or the fire department to say it is safe. If Xcel Energy is your gas utility, its gas emergency number is 800-895-2999. A plumber is called after the area is safe.
Do I need a permit to cap a gas line?
Capping is a real piece of gas work, and many jurisdictions treat it as permitted work. The Centennial Building Division, at (303) 754-3321, is the place to confirm what your address requires. A plumber should say who pulls the permit and what inspection follows, and the cap should be pressure tested before the line is left.
Who installs a gas line for a stove or range?
A licensed and insured plumber can run the pipe, install a shutoff valve and make the connection, then test the joints. The range itself has to match the fuel, and a new location may need a longer line or more capacity. Ask the plumber to check the whole system, not just the new run.
Is there a same-day plumber for a gas problem?
For a suspected leak, the first calls are 911 and the gas utility, not a plumber. Once the utility has made the area safe, the dispatch line can send a plumber for the repair where one is available. Be ready to say what the utility found and whether the meter is shut off.
Gas line problem in Centennial? Call the dispatch line
The line is answered 24/7. If you smell gas, leave and call 911 first. For repairs and new lines, call and describe the job.
- Licensed and insured plumbers
- Same-day service when available
- 24/7 emergency dispatch