Space Fireplace Services
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SFS_problem_fireplace-smells-like-gas.md
Space Fireplace Services — DFW chimney & fireplace specialists. Free inspection, written quote, no surprise fees.
Safety First. Then Inspection.
If you smell gas around your fireplace right now, the order of operations is fixed. Do not attempt to diagnose. Do not light the unit. Do not flip switches. **Step 1: Get everyone out of the home.** **Step 2: From outside the home, call your gas utility’s emergency line.** Atmos Energy emergency: 1-866-322-8667. CoServ Gas emergency: 1-866-882-3553. They will dispatch a technician at no charge to confirm whether you have a leak and to make the home safe. **Step 3: After the utility has cleared the home, call SFS at 469-992-4912** to schedule a fireplace inspection. We will identify the source of the leak and repair it. This page exists to help you understand what may be happening, what to expect from the utility visit, and what to expect from the SFS inspection that follows. It is not a DIY diagnostic. Gas leaks are one of the few fireplace problems that have to be handled by the utility first and a qualified technician second.Why Fireplaces Leak
We see four common leak sources in Dallas gas fireplaces, in approximate order of frequency. **1. Flex-line connector at the unit.** A coated stainless flexible gas line typically connects the unit to the building’s hard gas piping. The threaded fittings at each end of that flex line can loosen over time, especially if the unit has been moved during cleaning or service. This is the most common leak we find. **2. Pilot tube or burner manifold leak.** Internal gas lines inside the firebox — the small tubing that feeds the pilot, the burner orifices themselves, the manifold that distributes gas across the burner pan — can develop leaks at fittings or pinhole corrosion. These are less common than connector leaks but more serious because they discharge gas inside the unit. **3. Gas valve seat failure.** The main gas valve has internal sealing surfaces that can degrade. A failing valve may allow a small amount of gas to bypass even when the valve is “closed.” This shows up as a gas smell only when the unit is off, and a stronger smell or carbon monoxide when the unit is running. **4. Building gas piping.** Less common, but the leak may not be at the fireplace itself. The hard gas piping running from the meter to the fireplace can develop leaks at threaded joints, especially older galvanized or black-iron piping. The smell may be loudest near the fireplace simply because that is the closest fixture.The Seasonal Pattern
We see a measurable spike in fireplace gas smell reports in Dallas during the first cold snap of the season — typically the first week of November through the second week of December. There are two reasons. First, units that have been off for eight or nine months have had time to accumulate small leaks at fittings that were marginal but not detectable when the unit was hot. Second, owners are walking up to the fireplace for the first time in months and smelling residual gas that has accumulated near the unit. This pattern means the start of every cold season is the right moment to schedule a tune-up and safety inspection. We see far fewer emergency leak calls on units that received an October pre-season inspection.What the Gas Utility Will Do
When you call Atmos or CoServ’s emergency line, a technician arrives within 30 to 90 minutes typically. They will use a combustible gas detector to scan the area, identify the source of the leak if one is present, and shut off the gas supply to the leaking fixture. They do not repair appliance-side leaks — that is our job — but they will isolate the gas safely and tag the unit out of service. Their visit is no charge.What the SFS Inspection Will Do
After the utility has made the home safe, we come out and identify the exact source of the appliance-side leak. The diagnostic visit is $185 in the Dallas core. We use a combustible gas detector and a soap-bubble pressure test to walk every joint, fitting, and connector from the unit shutoff valve forward. Once the source is identified, we either repair on the spot or scope a more substantial repair. Common repair scenarios: A flex-line connector replacement and pressure test typically runs $245 to $385. A pilot tube or manifold repair runs $385 to $625. A gas valve replacement runs $650 to $1,200. Building-side gas piping work — work upstream of the unit shutoff — is generally outside our scope, and we coordinate with a licensed plumbing contractor. After any repair, we pressure-test the assembly with a manometer, confirm the gas valve and burner operate cleanly, and only then re-commission the unit. We do not light a unit we have not pressure-tested.What You Should NOT DIY
Do not tighten gas fittings yourself. Do not light the unit to see if the smell goes away. Do not “spray and look” with leak-detector fluid on a unit that is currently leaking — soap testing has its place, but only after the gas is properly isolated and only with the right product. Do not bypass any safety device.When to Call Beyond the Utility
Call us at 469-992-4912 in any of the following situations. The utility has identified an appliance-side leak. The utility has tagged your fireplace out of service. You smell gas around the fireplace intermittently — strong some days, faint others — even after the utility says the home is clear. You smell gas only when the unit is running, suggesting an internal leak the utility may not have detected with the unit cold.Selected Project: A North Dallas Service Call
The owner had reported a gas smell to Atmos on the first cold night of November. Atmos had identified a leak at the fireplace, isolated the gas at the unit shutoff, and tagged the fireplace. We arrived the next morning. Combustible gas detector scan walked the entire connection chain from shutoff valve forward. The flex-line connector at the unit registered a sustained reading. We replaced the flex line, re-torqued every threaded joint to manufacturer spec, and ran a manometer pressure test for fifteen minutes — held tight. We re-commissioned the unit, verified clean burner operation, and signed off the repair. Total time on site: 75 minutes. Total invoice: $345.Frequently Asked Questions
**Should I call you before the utility?** No. Call the utility first. They are equipped to make the home safe immediately, their visit is free, and they have legal authority to isolate the gas at the meter if needed. Once the home is safe, call us for the appliance-side repair. **Can a fireplace leak even when it is off?** Yes. Flex-line connector leaks, valve-seat leaks, and building-side piping leaks all show up regardless of whether the unit is running. **How quickly can you come out after the utility?** For tagged-out fireplaces during cold weather we typically schedule within one to three business days. We treat tagged units as priority because they leave the home without functioning fireplace heat. **Do you perform pre-season safety inspections?** Yes, and we recommend them. Annual October inspections catch most small fitting issues before they become emergency leak calls. The visit takes about an hour and includes a complete gas-side and ignition-side inspection. **Will you confirm carbon monoxide is not present?** Yes. We carry a calibrated CO meter and confirm CO levels at the firebox draft envelope before signing off any repair. If CO is elevated even after the leak is repaired, we scope further.Schedule an Inspection
After the utility has made your home safe, call 469-992-4912 or write through the form. We schedule inspection visits Monday through Saturday and prioritize utility-tagged units.Adjacent Resources
– [Gas fireplace pilot won’t stay lit](https://spacefireplaceservices.com/gas-fireplace-pilot-wont-stay-lit-dallas/) – [Gas fireplace clicks but won’t ignite](https://spacefireplaceservices.com/gas-fireplace-clicks-no-ignition-dallas/) – [Gas fireplace repair service hub](https://spacefireplaceservices.com/gas-fireplace-repair/) – [Gas conversion service hub](https://spacefireplaceservices.com/gas-conversion/) – [Fireplace remote not working](https://spacefireplaceservices.com/fireplace-remote-not-working-dallas/) — *Author: Marco Hensley, Senior Project Manager, Space Fireplace Services.*Our Sister Companies — Specialists in Related Services
Texas Service Experts is part of a network of CSIA-certified chimney specialists. Depending on your specific need:
- Texas Service Experts — general chimney sweep/inspection
- Texas Chimney Experts — chimney repair/masonry