Gas line repair in Maryville, Tennessee
Gas Line Repair in Maryville, TN: Gas Smells, Pressure Tests and Appliance Hookups
A gas smell is an emergency for the gas utility and 911, not for a plumber first. This page covers the safe steps first, then what happens afterward on repairs, hookups and inspections.
If You Smell Gas, Do This First
- Leave the house.Take everyone, including pets, and go outside.
- Do not touch switches or devices.Do not turn lights on or off, use a lighter or start a vehicle in the garage.
- Call 911 from outside.Describe the smell and the address.
- Call Atmos Energy on 866-322-8667.Atmos is the gas utility listed for Maryville, and it handles the gas supply.
- Stay out until you are told it is safe.Do not go back in to look for the source.
A plumber is not the first call for a gas smell. Repairs to gas piping happen after the utility has cleared the area.
Source: Atmos Energy leak safety guidance.
If you smell gas, leave and call 911 first. For a plumber afterward, call here.
Call (833) 840-2034Where the Utility Stops and the Plumber Starts
Atmos supplies the gas and works on its own equipment. The piping inside your house, and on your side of the meter, is a different question.
Where the utility's responsibility ends on your property is something to ask Atmos. We did not find a Maryville source that draws the line, so none is claimed here.
- A smell, a hiss or a gas meter problem goes to Atmos first.
- A repair to piping, a shutoff valve or a connection inside the house is plumber work, once the utility has said it is safe.
- A fuel-burning appliance that will not light is often an appliance problem, not a piping problem.
What a Gas Line Problem Looks Like
| What you notice | Could mean | Who handles it |
|---|---|---|
| Rotten-egg smell | A leak somewhere on the gas system | Leave, call 911, then Atmos |
| Hissing near a pipe or appliance | Gas escaping under pressure | Leave, call 911, then Atmos |
| A pilot that keeps going out | An appliance part, or a supply issue | Plumber or appliance technician |
| A flame that is yellow or burns unevenly | Burner or air problem, not always the pipe | Appliance technician |
| A new appliance and no gas connection | A line extension or hookup is needed | Plumber, with a permit question |
| Dead plants or dirt that bubbles near a buried line | A possible buried leak | Leave the area, call 911 and Atmos |
When the table says to call 911 and Atmos, that is the whole answer for the moment. Everything else on this page is for after the area is safe.
What a Plumber Does on a Gas Repair
Gas work is mostly about testing and about connections. The sequence below is typical, not a promise about your house.
- Look at the system.The plumber finds the shutoff valve, the run of pipe and each appliance it feeds.
- Isolate and test.A pressure test shows whether the piping holds pressure when the appliances are closed off.
- Find the leak.A gas detector or leak solution on the joints locates the source.
- Repair or replace the section.A bad joint, a worn flexible connector or a corroded section is replaced.
- Test again.The repaired line is tested before gas is turned back on.
- Check the appliances.Each appliance is relit and checked once the line holds.
Ask for the test result in the notes, and ask what test was used. A repair with no retest is only half a repair.
Appliance Hookups and New Gas Lines
Many gas calls are not leaks. They are a new range, dryer, fireplace, grill or water heater that needs a connection.
- Range or cooktop: needs a shutoff valve within reach and a connector rated for the appliance.
- Dryer: needs a gas connection that fits the dryer and a safe path to move it.
- Outdoor grill or fire feature: usually needs a line run outside, which may need digging.
- Water heater: gas heaters have their own connection and venting, covered on the gas water heater installation pages.
Ask whether the new line needs a permit and who files it. Digging outside also calls for Tennessee 811, which asks for notice three to ten working days ahead.
Call and describe what you see.
Call (833) 840-2034Permits and Inspections for Gas Work
The City of Maryville has adopted the 2024 International Plumbing and Residential Codes, effective January 1, 2026. Ask the plumber which code applies to your job and whether a permit is needed.
Codes Enforcement answers permit questions at 865-273-3500 and residential inspections can be reached at 865-273-3516. The City lists a rough-in pressure test then a final inspection for new work.
A hookup on an existing line may be treated differently from a new line. Ask, rather than assume.
Gas Appliances and Water Heaters
A gas water heater is the most common appliance tied to a gas question. A pilot that will not stay lit, a burner that will not fire or a smell near the heater needs more than relighting.
For a heater that has stopped working, the diagnosis steps are on a gas water heater that will not stay lit. If the heater is old and the tank has failed, the next question is replacement.
On-demand heaters draw more gas at once, so the supply pipe size matters. See gas supply for a tankless unit for how that is checked.
Gas Line Questions: Testing, Parts, Permit and Relighting
- What test will be used, and will I get the result in writing?
- Which parts are being replaced, and why?
- Is a permit part of the job, and who files it?
- What happens to the appliances while gas is off, and who relights them?
- Will the plumber check every appliance on the line, or only the one being repaired?
Gas is not a place for improvised answers. A plumber who explains the test and the plan is giving you what you need.
Carbon Monoxide Is a Different Problem
A gas leak and carbon monoxide are not the same. A gas leak is unburned fuel escaping. Carbon monoxide comes from fuel that burns incompletely, and it has no smell.
A carbon monoxide alarm that sounds means leave the house and call 911. Do not wait to find the cause. After the area is cleared, a plumber or appliance technician can look at the burner and venting.
When Gas Work Cannot Wait
| Leave and call 911 now | Can be scheduled |
|---|---|
| A strong gas smell or a hiss | A new appliance connection |
| A carbon monoxide alarm is sounding | A pilot that goes out occasionally, with no smell |
| Bubbling dirt or dead plants near a buried line | A shutoff valve that is stiff but not leaking |
If you are not sure which column you are in, treat it as the left column and call 911.
Gas Line Work After the Area Is Safe
Describe the appliance or the line and give your ZIP code.
Call (833) 840-2034