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Smelling Gas at Home
You walked past the furnace and caught that rotten egg smell. Maybe it is faint, maybe it is strong. Either way, you want to know what to do right now, in what order, and whether it is safe to stay in the house. Here is the short version first, then the details, and then when to call us.
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By our service team · vetted by the techs who do this daily
Do These Things First, In This Order
If you smell gas near the furnace, get everyone out of the building first. 1. Walk out the door with your family and any pets. Do not stop to open windows or hunt for the source. 2. Once you are outside and away from the house, call 911 or your gas utility's emergency line. Both will send someone. 3. Stay outside until they tell you the building is safe to enter. 4. After they clear it, call us and we will look at the furnace itself. That order matters. The utility handles the gas line and the shutoff. We handle the heating equipment once the gas side is settled.
What Not To Do While You Still Smell Gas
Do not flip any light switch, on or off. Do not use the garage door opener. Do not plug in or unplug anything, and do not start a car in an attached garage. A switch makes a small spark you never notice on a normal day, and that is enough. Do not light a match or a lighter to test anything. Do not call the utility from inside the house on a cell phone; make the call from outside or from a neighbour's. Do not try to close the gas valve at the furnace yourself. Leave that to the utility crew, who can also check whether the line is holding pressure.
What Carbon Monoxide Smells Like, And Why That Is A Problem
Carbon monoxide has no smell at all. The rotten egg odour you notice is an additive put into natural gas so leaks can be found. Carbon monoxide is a separate hazard and it comes from combustion that is not venting properly. The warning signs are people, not noses. Headaches, dizziness, nausea or unusual sleepiness that improve when you leave the house are worth taking seriously. If a carbon monoxide alarm sounds, treat it exactly like a gas smell: everyone outside, call 911, then call us once the building has been cleared and you need the heating system inspected.
What Actually Causes A Gas Smell At The Furnace
Common causes include a loose fitting or union at the gas line, a worn valve, a cracked or corroded flexible connector, or a pilot that has gone out on an older unit and let a small amount of gas escape. Along the coast, corrosion is a bigger factor than most homeowners expect, and salt air works on metal connections and cabinet panels year after year. A furnace that has been sitting unused through a long cooling season can also give off a brief burnt dust smell on first startup, which is different from rotten eggs and clears in a few minutes.
When To Call Us And What We Do Next
Call us after the gas utility or fire department has cleared the building. We handle heating repair, heater repair and furnace repair for homeowners across the region, and we will inspect the gas train, connectors, valve and heat exchanger, then test for leaks with proper equipment. If the furnace needs parts, we will tell you what is wrong in plain terms before anything is replaced. We also work on air conditioning repair and air conditioner repair, so if the same system runs cooling most of the year we will look at the whole cabinet, not just the burner side. Tell us what you smelled and when.
When it is time to book
Smelling Gas at Home — common questions
Can I stay in the house if the smell is very faint?
Leave anyway. A faint smell can mean a small leak or a large one that is dispersing. You cannot judge concentration by nose. Go outside, call 911 or the gas utility, and let them measure it.
Should I shut off the gas myself before leaving?
No. Walk out and let the utility crew handle the shutoff. They have tools and meters, and turning a stiff or corroded valve can make a small leak worse. Getting out of the building comes first.
Is the burnt smell on first heat startup the same thing?
Usually not. Dust burning off the heat exchanger smells scorched and fades in a few minutes. A rotten egg or sulphur smell is the additive in natural gas. Treat that one as a leak and leave.
How it works
- Step 1
Tell us the symptom
Call or fill in the quote form with what you hear, smell or feel. Warm air, ice on the lineset, a humming outdoor unit. That detail helps us load the right parts before we drive out.
- Step 2
We diagnose on site
We check the thermostat, the air handler, the condenser and the electrical side, then measure what the system is actually doing. You get a plain explanation of the fault and the repair options before we start.
- Step 3
We repair and verify
Once the repair is done we run the system and confirm temperature split, drainage and airflow at the vents. If a part is on order, we tell you the timeline instead of leaving you guessing.
- A real person answers
- Open 7 days
- Written quote before work starts
Why homeowners call us
- We plan for salt airCoastal humidity and salt eat coils, contactors and cabinet screws. We look for corrosion during every visit and treat it as part of the diagnosis, not an afterthought, so a repaired system does not fail again in the same spot.
- Built for constant runtimeFlorida systems run most of the year, so bearings, capacitors and drain lines wear faster than the manual suggests. We size repairs around that reality and point out the components likely to be next in line.
- Old houses and new onesIsland properties often hide ductwork in tight, damp spaces, while tract homes tend to have short, undersized returns. We have worked both and adjust the approach rather than forcing one standard fix.
- Clear talk, no upsell theatreWe tell you what failed, what it takes to fix it, and whether repair or replacement makes more sense for the age of the equipment. If a repair will hold, we say so and get on with it.
- All major brands, gas & electricIndependent service on Carrier, Trane, Lennox, Goodman, York and the rest.
- Straight answersWhen a replacement beats a repair, we tell you, sometimes before we roll a truck.
About this guide
When the easy checks change nothing, it's time for a tech
Describe what you found and we'll take it from there. Booking takes about a minute.
- A real person answers
- Open 7 days
- Written quotes
- All major brands
- Gas & electric
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