Safety guide · Lithia, FL
Signs of a Gas Leak in Your House and What to Do
The signs of a gas leak in your house include a rotten-egg odor, hissing and feeling unwell. If you notice any, go outside first and call your gas utility or 911 from there.
Emergency? Call now, 24/7(656) 254-8200- ExitPeople and pets, at once.
- Phone from outsideGas utility emergency line or 911.
- WaitUntil the all-clear comes.
Signs of a gas leak in your house, at a glance
- Go outside firstSkip the search for a source. Take everyone and every pet.
- Call from the yardGas utility emergency line or 911.
- Avoid sparksNo switches, flames, phones or cords while inside.
- Clues to knowEgg-like odor, hissing, bubbles outdoors, a yellow flame.
- Repair followsA plumber fixes piping after the utility has secured it.
Smell gas? Get outside before you do anything else
Every other tip in this guide waits until you are outdoors. When any of the signs of a gas leak in your house appears, your feet should move before your hands do.
Four moves, in a fixed order
Do not hunt for the source and do not stop to gather belongings. Call everyone to the door, grab leashes if they are within reach, and walk out. Put real distance between yourself and the building, and stand upwind if you can tell which way the breeze is going.
Once you are at a safe distance, phone the gas utility’s emergency number or 911. The number is printed on your gas bill and is often stamped near the meter. Put it in your phone today so you never have to search for it in a panic. Wait outside until the utility or the fire department tells you the house is clear.
Exit
People and pets, immediately.
Distance
Well away from the walls.
Phone from outdoors
Utility emergency line or 911.
Wait
Until responders say it is safe.
Everyday actions that can set off escaping gas
Natural gas needs only a faint spark to ignite, and many routine household habits make one.
Leave switches, flames and chargers alone
Skip the light switch, even to see where you are going. Do not strike a match, flick a lighter or light a candle. Do not plug in or pull out a cord, press a doorbell, start a garage door opener or switch on a fan. Even a phone call from inside is a risk, so make it from the yard.
Do not try to find the leak with a flame, tighten a fitting or turn valves on the gas pipes. Those jobs belong to the utility first and then to a plumber once the house is safe.
- SwitchesLights, fans, thermostats stay as they are.
- FlamesNo match, lighter, candle or pilot relighting.
- CordsDo not plug anything in or out.
- PhonesUse one only after you are outside.
- DoorsStay out until you are cleared.
A smell that disappears is not an all-clear
Noses tire quickly. After a few minutes in a gassy room you may stop noticing the odor, which feels like the problem went away. It did not. A leak can also come and go with temperature and appliance use. If you smelled it even once, treat it as real until someone with a meter says otherwise.
The same rule applies outdoors. A smell by the meter, a regulator or a buried line means moving away and calling the utility.
If unsure, make the call
A visit that finds nothing costs the utility a few minutes. A leak left alone can cost a home. Calling is the correct choice every time.
Signs of a gas leak in your house: smell, sound, sight and symptoms
A leak announces itself in more than one way, and any one clue is enough reason to go outside and call.
What your nose and ears may pick up
Natural gas is odorless in its raw form. Utilities blend in a sulfur-like additive so people can catch it, and most describe the result as rotten eggs. Propane, used in some homes and in backyard tanks, carries a similar additive. A hiss, whistle or roar near a pipe, an appliance or the meter also suggests gas escaping under pressure.
A strong smell does not tell you where the source is, so do not try to follow it.
| Clue | What it may mean | Your move |
|---|---|---|
| Sulfur or egg-like odor | Gas is escaping | Exit, then phone |
| Hissing near a pipe or appliance | Gas leaving under pressure | Exit, then phone |
| Bubbles in a wet spot or puddle outside | Buried line is leaking | Step back, then phone |
| A circle of dead grass over a line | Slow leak underground | Report it to the utility |
| Burner flame turns yellow or orange | Poor combustion | Switch off the appliance and phone |
| Pilot flame will not stay lit | Draft, fault or supply problem | Phone before relighting |
What you may see, and how people and pets react
Look outside for dust blowing from one spot on a still day, bubbles in a puddle by a line or a bald patch in a green lawn. Indoors, soot or brownish stains around an appliance and a flame that burns yellow rather than blue indicate incomplete burning, which is a safety problem by itself.
Bodies react too. Headache, dizziness, nausea, tiredness or breathing trouble can follow exposure, and a pet may act strangely first. If anyone feels unwell and any of the clues are present, go outside and tell the call-taker about the symptoms.
- Headache or dizzinessPossible exposure. Go outside.
- Nausea or fatigueSay so on the emergency call.
- A pet that seems offTreat it as an early warning.
- Bald patch over a lineTell the utility.
Raw gas versus carbon monoxide
People confuse them, yet they differ in cause, warning and risk. The response is the same: get outside.
How the two differ
A gas leak is unburned fuel escaping into the air. It can ignite, and in large amounts it can crowd out oxygen. Carbon monoxide is a byproduct created when fuel burns badly. It has no smell, color or taste. Sources include an appliance with a fault, a blocked flue, a generator and a car idling in a closed garage.
You cannot smell carbon monoxide, so alarms are the defense. Fit one on every level and near bedrooms, test it, and replace it on the maker’s schedule. If one sounds, leave and call 911.
| Gas leak | Carbon monoxide | |
|---|---|---|
| Odor | Added sulfur smell | None at all |
| Main danger | Fire or explosion | Poisoning |
| Early warning | Smell or hissing | Alarm or symptoms |
| Typical origin | Pipes, fittings, appliances | Bad burning, blocked vent, generator |
| First move | Exit, phone from outside | Exit, call 911 |
Storm season in Florida
Hurricane weather adds hazards. Run a generator outdoors and away from doors and windows, never in a garage or on a lanai. After flooding, do not relight or smell-test appliances yourself, because wet controls need checking first. Fallen trees and shifted ground can strain buried lines, so a gas smell after a storm gets the same response as any other.
If a gas-fired water heater is involved, a sooty flame or an odd smell in the closet deserves attention. See water heater repair once the house is safe.
- Generator outdoorsClear of every opening.
- After a floodHave gas appliances inspected first.
- Alarms on each floorPress the test button monthly.
- Emergency number savedStored in your phone.
Common places a gas leak begins
Knowing the usual suspects lets you describe the problem clearly and understand the repair that follows.
Connectors, fittings and buried runs
Most leaks start at a joint: the flexible connector behind a range or dryer, the fitting beside a water heater, a valve on a grill line or a threaded junction in the house piping. Corrosion, vibration, age and loose fittings all contribute. Outdoors, a buried line can leak at a coupling or where a shovel once nicked it.
Appliances fail from within as well, through a cracked burner, a weak valve or a tired thermocouple. Those are appliance repairs, but the supply pipe that feeds the appliance counts as gas line work.
| Location | Typical problem | Who deals with it |
|---|---|---|
| Range or dryer hookup | Kinked or worn flex connector | Plumber, after the utility makes it safe |
| Beside a water heater | Loose or rusted fitting | Plumber |
| Pipes inside the walls | Damaged joint or section | Plumber |
| Meter and service line | Utility-owned equipment | Gas utility |
| Buried yard run | Corrosion or dig damage | Plumber or utility, depending on ownership |
Ownership splits at the meter
As a general rule, the utility owns the line up to and including the meter, and the property owner owns everything past it. The exact boundary can differ, so confirm with your utility. A leak at the meter belongs to the utility. A leak in house piping or at an appliance is repaired by a plumber after the utility has secured the site.
A plumber who works on gas can fix or replace connectors and piping. Gas leak repair covers the leak itself, and gas line repair covers lines that need repair or replacement.
Utility secures it
Finds and isolates the hazard.
Plumber examines
Locates the source and what to replace.
Repair and test
Repaired piping is pressure tested.
Service resumes
Gas is turned back on once the piping checks out.
What happens after a gas leak call
When the emergency ends, a repair and some habit changes follow.
What the responders will ask
The utility or fire department sends someone with a meter who can measure gas in the air, trace the source and shut off the supply if needed. Tell them what you smelled, where, when it began, which appliances were running and whether anyone felt unwell. Do not walk back in for belongings before they clear the house.
If service was shut off, it stays off until the leak is repaired and the system is checked. Expect the plumber to test the repaired piping before gas is restored.
- What you smelledAnd in which room.
- When it startedEven an approximate time helps.
- Running appliancesRange, heater, dryer.
- SymptomsAnyone who felt unwell.
- ClearanceWait for it before entering.
Cutting the odds of a repeat
Have gas appliances checked on the schedule the maker suggests. Keep vents and flues clear, store nothing flammable near a heater, and look over flexible connectors for kinks and rust whenever you slide an appliance out. Replace any that look tired. Know where the house shutoff is, but let the utility use it during an emergency.
Store backyard propane tanks upright, away from walls and heat. If you smell gas near the tank, walk away and call.
| Habit | How often | Reason |
|---|---|---|
| Inspect connectors | Whenever appliances move | Kinks and corrosion show up |
| Test CO alarms | Once a month | They are the only warning |
| Look at vents and flues | Once a year | Blockages cause poor burning |
| Appliance service | As the maker advises | Catches wear before a leak |
Other smells that are easy to mistake
Not every bad odor in a house is fuel. A drain trap that has dried out lets sewer air drift up and smells sulfurous too. A failing refrigerator, a fridge drip pan or spoiled food can mimic the same note. The difference is that you cannot rule gas out from the couch. If the smell is near a range, a heater, a dryer or the meter, or you hear hissing, take the gas path and go outside.
If the odor is clearly tied to one sink or floor drain and nothing else, running water into the trap for a minute often fixes it. See how to unclog a drain if the drain itself is slow.
| Where the odor is strongest | More likely source | Safe first step |
|---|---|---|
| Near the range, dryer or heater | Gas connection | Exit, call from outside |
| Around the meter or a regulator | Utility equipment | Move away, call the utility |
| Over one rarely used drain | Dry trap, sewer air | Run water into it for a minute |
| Inside the refrigerator area | Spoiled food or drip pan | Clean it out, air the room |
| Everywhere and strong | Possible gas | Exit, call from outside |
A quick household drill worth running
Gather the household once and walk through the plan out loud. Pick the spot outside where everyone meets, agree on who grabs the pets, and say who phones. Children and visitors should know the smell and know that they are to walk out and not look for the cause.
Name a meeting spot
Somewhere upwind and away from the house.
Assign the pets
One person owns leashes and carriers.
Assign the call
One person phones from outside.
Repeat each year
Plans fade if never rehearsed.
When a plumber becomes the next call
The first call in an emergency is the utility or 911. A plumber comes after, in situations like these.
The utility has secured the house
A plumber traces and repairs the source in house piping or at an appliance.
A connector looks kinked or rusted
Replace it before it turns into a leak.
A new gas appliance needs a supply
Gas piping belongs with a plumber who works on gas.
An odor after a storm
Exit and call the utility, then arrange the repair.
Services for gas trouble
Gas leak repair
Locate and repair a leak in house piping or at an appliance.
Gas leak repair details →Gas line repair
Repair or replace damaged gas piping.
Gas line repair details →Water heater repair
Check a gas-fired water heater once the house is safe.
Water heater repair details →Emergency plumber
All plumbing jobs on one number, 24/7.
Emergency plumber details →Gas leak questions
What are the signs of a gas leak in your house?
An egg-like odor, hissing near a pipe or appliance, bubbles in wet ground outdoors, a lawn patch that has died over a line, yellow burner flames and unexplained headaches or dizziness. Any single one justifies going outside and calling.
What is the first thing to do on smelling gas?
Take everyone and every pet out, move away from the building and phone your gas utility’s emergency line or 911 from outside. Do not touch switches on your way out.
May I use my phone while still inside?
No. Step outside first. Electrical devices can produce a spark, and gas needs only a tiny one.
Should I stop to open windows?
Do not spend time on it. Leaving is the priority. If a window happens to be in your path and opens with no effort, fine, but never delay the exit.
Can I shut off the gas on my own?
Leave valves to the utility or responders. Handling them during an emergency adds risk. Go out and call.
Why does gas smell like eggs?
Raw natural gas has no odor, so the utility adds a sulfur-based compound that lets people notice a leak.
The smell was brief. Does it still count?
Yes. Noses adapt and some leaks come and go. Call the utility and let them check.
When can we return inside?
Only after the utility or fire department declares the house clear. Never go back early for belongings.
What does gas leak repair cost?
It depends on where the leak is, how much piping is involved and which parts are needed. Ask about pricing when you call. In an emergency the first call is the utility or 911.
Does a carbon monoxide alarm detect gas leaks?
No. It warns about poisoning from poor burning and does not sense raw gas. Many homes want both kinds of protection. If any alarm sounds, leave and call 911.
Can I get repair help overnight?
Yes. Calls are answered 24/7 and same-day service is available once the utility has secured the house. See gas leak repair.
More plumbing guides
Need a repair? Call once the house is safe.
Smell gas now? Go outside and call the gas utility or 911 first. For the repair that follows, call any hour. Same-day service is available.