1st Choice Residential journal
Converting a Wood-Burning Fireplace to Gas in DFW: Your 3 Options
Thinking about converting your wood-burning fireplace to gas in DFW? Here are the three real options, what your chimney has to pass first, and what drives the cost.
You've got a brick fireplace you never use. Hauling wood is a pain, the ash gets everywhere, and nobody in the house wants to babysit a fire on a 40-degree Dallas night. So you start looking into gas — and within ten minutes you've found four different answers, three different price ranges, and a contractor who wants to sell you something that doesn't fit your chimney.
Here's the straight version. Converting a wood-burning fireplace to gas is normally a one-day job, but there are three different ways to do it, and picking the wrong one is where DFW homeowners waste money. This guide walks through the options, what your chimney has to pass before anything gets installed, and what actually drives the final number.
The Three Ways to Convert a Wood Fireplace to Gas
People say "gas conversion" like it's one thing. It's not. These are three genuinely different products with different heat output, different venting, and different chimney work behind them.
| Option | What It Is | Heat Output | Chimney Work Involved | Best For |
|---|---|---|---|---|
| Vented gas log set | Ceramic logs and a burner dropped into your existing firebox. Damper stays open when it runs. | Low — mostly decorative | Firebox and flue must be sound and clean; damper clamp required | Ambiance only, lowest cost, keeps the open-fire look |
| Gas fireplace insert | A sealed firebox that slides into your masonry opening with its own liner running up the chimney. | High — an actual heater | New stainless liner run through the existing chimney | Homeowners who want real heat and less wasted gas |
| Full fireplace replacement | The old firebox comes out; a new direct-vent gas fireplace goes in. | High | Most invasive — framing and new venting | Damaged or failing fireboxes, or a full remodel |
The gap between a log set and an insert is the one that catches people. The Hearth, Patio & Barbecue Association is blunt about it: decorative vented gas products draw room air for combustion and run the exhaust straight up an open flue, which means very low heating efficiency. An insert is designed to make the existing fireplace efficient. If your goal is "the living room should actually get warm," a log set will disappoint you.
Before Anything Gets Installed: The Chimney Has to Pass
This is the step bad contractors skip, and it's the step that turns a clean install into a callback.
The Chimney Safety Institute of America recommends that the chimney and venting system be inspected before a new hearth appliance goes in, because every appliance has its own venting requirements and the existing system may or may not handle it. That inspection tells you three things that change the whole project:
- Is the flue liner intact? Cracked clay tiles, missing mortar joints, or a gap in the liner all have to be dealt with before gas exhaust goes up that chimney.
- Is the firebox sound? Spalling brick and failed refractory panels mean a log set is off the table until it's repaired.
- Is the chimney clean and dry? Old creosote, a missing cap, animal nests, and water intrusion all get found here — and water is the number-one thing that quietly wrecks a chimney in North Texas.
Our chimney sweep with camera inspection is $199, and that includes video of the flue so you're looking at your own chimney instead of taking somebody's word for it. If the chimney was swept recently, a gas fireplace inspection and cleaning runs the same $199.
What Actually Drives the Cost
Anyone who quotes you a conversion price over the phone without seeing the fireplace is guessing. Four things move the number.
1. Whether gas is already at the fireplace
A lot of DFW homes built since the 1980s already have a gas stub in the firebox — sometimes with an old-style key valve in the wall. If it's there and it's sized right, you've skipped the single biggest variable. If it isn't, a licensed plumber has to run new line, and the distance from your meter to the fireplace is what sets that price.
2. What kind of venting the appliance needs
A vented log set uses the chimney you already have. An insert needs a new stainless liner sized to the appliance, run top to bottom. A direct-vent replacement needs its own sealed intake and exhaust. HPBA has a plain-English rundown of the venting options if you want to see how they differ.
3. Repairs the inspection turns up
A missing or damaged chimney cap starts at $99. Liner and firebox repairs vary widely, which is exactly why the inspection comes first — you want the real scope before you commit to an appliance.
4. The appliance itself
Log sets, inserts, and full fireplaces span a wide price range depending on brand, size, and finish. We'll show you the options that actually fit your opening rather than steering you to whatever's in the truck.
Permits and Who's Allowed to Do the Work
New gas line work is plumbing work. Fort Worth, for example, issues plumbing permits that cover gas line installation and has adopted the 2021 International Fuel Gas Code — you can see the requirements on the city's residential permitting page. Every DFW municipality is a little different, so ask any contractor two questions before you sign: who's pulling the permit, and who's doing the gas work.
Also worth knowing: NFPA 211 calls for chimneys, fireplaces, and vents to be inspected at least once a year. That doesn't stop applying because you switched to gas. Gas appliances leave their own signature — soot on the glass, moisture, corrosion at vent connections — and a yearly look catches it early.
Frequently Asked Questions
Can I convert my wood-burning fireplace to gas myself?
No. Gas line connections require a licensed plumber and, in most DFW cities, a permit and inspection. The appliance install and venting should be done by a qualified hearth technician. A bad gas connection or an improperly vented appliance is a carbon monoxide problem, not a cosmetic one.
Do I still need my chimney swept if I switch to gas?
Yes. A vented gas log set still exhausts up the flue, and the chimney still needs to be clear, capped, and watertight. NFPA 211 calls for annual inspection regardless of fuel. Debris, nests, and water damage don't care what you're burning.
Will gas logs heat my house?
Not meaningfully. Vented decorative gas products pull room air for combustion and send most of the heat up the chimney. If heat is the goal, you want a gas insert or a direct-vent fireplace, not a log set.
How long does a gas fireplace conversion take?
If the gas line is already in place and the chimney passes inspection, a log set install is usually a few hours. An insert with a new liner is typically a full day. Add time if gas line work or chimney repairs are needed first.
What if my fireplace already has a gas starter?
A gas starter pipe is not the same as a supply line for a log set or insert. It's often undersized and may be on an old key valve. It's a good sign — gas is nearby — but it has to be evaluated, not assumed.
Get a Straight Answer on Your Fireplace
1st Choice Residential has been working on fireplaces and chimneys since 2009. We're veteran-owned, licensed and insured, locally owned rather than a franchise, and our technicians are NFI-certified. Every job carries a 1-year workmanship warranty.
If you're thinking about converting, start with the inspection. For $199, a sweep and camera inspection tells you what your chimney can actually support before you spend a dollar on an appliance. From there we'll lay out your real options for fireplace installation, including what it costs and what it won't do.
We serve the entire Dallas–Fort Worth metroplex, including Southlake.
Call DFW: (817) 791-4606 · Gulf Coast: (251) 272-1990 · Text or iMessage: 817-946-8206