Converting Wood Burning Fireplace to Natural Gas

If you're tired of hauling firewood, dealing with ashes, and worrying about chimney maintenance, converting your wood burning fireplace to natural gas is a smart upgrade. A natural gas fireplace offers the warmth and ambiance of a real fire with the push of a button—no splinters, no soot, and no last-minute trips to the woodpile.

But the conversion process isn't as simple as swapping one fuel source for another. It involves understanding your existing fireplace's structure, local building codes, venting requirements, and the different types of gas inserts available. This guide will walk you through every stage, from assessing feasibility to selecting the right gas fireplace insert for your home.

Wood-burning fireplaces have undeniable charm, but they come with a long list of drawbacks: constant cleaning, chimney inspections, seasonal wood storage, and inconsistent heat output. Natural gas fireplaces solve many of these pain points while preserving the cozy atmosphere you love.

If your home already has natural gas service—for a furnace, water heater, or range—the conversion becomes significantly more practical. If not, you'll need to factor in the cost of running a gas line to your fireplace location.

Not every wood-burning fireplace can be converted to natural gas. The feasibility depends on several structural and safety factors. Before you start shopping for inserts, have a certified technician inspect your fireplace and chimney.

If your fireplace passes inspection, you're ready to explore your options. If not, you may need to consider alternatives like a full replacement or a different type of heating appliance.

When converting to natural gas, you'll encounter two main categories of gas inserts: vented and ventless. Each has distinct advantages and limitations.

Feature	Vented Gas Insert	Ventless Gas Insert
Venting	Requires chimney or direct vent	No exterior venting needed
Efficiency	Moderate to high (some heat lost up the flue)	Very high (nearly all heat stays in room)
Flame Realism	More realistic, larger flames	Slightly less realistic, smaller flames
Installation	More complex, requires venting modifications	Simpler, but strict clearance requirements
Indoor Air Quality	Combustion byproducts exit outside	Releases moisture and trace gases indoors
Best For	Homes with existing chimneys, those wanting realism	Homes without chimneys, supplemental heat

For most wood-to-gas conversions, a vented insert is the natural choice because you already have a chimney. However, if your chimney is damaged or you want maximum efficiency, a ventless model might be worth considering. Be sure to read our detailed comparison of ventless vs vented fireplaces before deciding.

Converting a wood burning fireplace to natural gas is a multi-stage project. Here's what to expect from start to finish.

Step 1: Professional Inspection & Assessment

A certified chimney sweep or gas fireplace technician will inspect your fireplace, chimney, and surrounding structure. They'll check for cracks, creosote buildup, and clearance issues. This assessment determines whether conversion is feasible and what modifications are needed. For a broader checklist, see our fireplace inspection checklist.

Step 2: Obtain Permits

Most municipalities require a permit for gas line installation and fireplace modifications. Your contractor will typically handle this, but it's important to confirm. Our article on fireplace permit requirements provides general guidance.

Step 3: Run the Gas Line

A licensed plumber or gas fitter will run a natural gas line from your existing service to the fireplace location. This may involve running pipe through walls, crawlspaces, or attics. If you don't have natural gas service, you'll need to arrange for a meter installation first. Our guide on adding a gas fireplace to an existing home covers this scenario.

Step 4: Prepare the Fireplace

The existing firebox may need cleaning, repair, or modification to accept the gas insert. In some cases, a stainless steel liner is installed in the chimney to safely vent gas exhaust. Learn more in our article on installing a gas fireplace in an existing chimney.

Step 5: Install the Gas Insert

The gas insert is positioned in the firebox and connected to the gas line and venting system. Electrical connections for blowers, remotes, or thermostats are also made at this stage. Many modern inserts include blower and remote control features for added convenience.

Step 6: Connect and Test

After installation, the technician will connect the gas line, check for leaks, and test all functions—ignition, flame adjustment, blower operation, and safety shutoffs. They'll also verify that venting is drawing properly.

Step 7: Final Inspection

A local building inspector will review the work to ensure it meets code requirements. Once approved, you're ready to enjoy your new gas fireplace.

For a broader overview of installation considerations, see our fireplace installation guide.

The total investment for converting a wood burning fireplace to natural gas varies widely based on several factors. While we don't list specific prices (as they fluctuate by region and over time), understanding the variables helps you plan.

• Type of Gas Insert: Entry-level models are simpler in design and function, while premium and luxury inserts offer larger viewing areas, more realistic flames, and advanced features like remote control, thermostats, and smart home integration.
• Venting Requirements: If your chimney is in good condition, a liner may be all that's needed. If the chimney is damaged or unlined, additional work—and cost—is involved.
• Gas Line Distance: The farther the fireplace is from your gas meter or existing gas line, the more labor and materials are required.
• Fireplace Modifications: Some fireboxes require repair, refacing, or custom surrounds to accommodate the insert. Our guide on concrete fireplace surround ideas explores surround options.
• Permits and Labor: Permit fees and professional labor rates vary significantly by location. Complex installations in older homes may require more labor hours.
• Optional Features: Blowers, remote controls, thermostats, and smart home integration add to the total. Our article on smart home fireplace integration covers these upgrades.

For a more detailed breakdown, see our articles on cost of converting wood burning fireplace to gas and converting wood burning fireplace to gas cost. You can also explore companies that convert wood burning fireplace to gas to find local professionals.

With so many options on the market, selecting the right gas insert can feel overwhelming. Here's what to prioritize:

• Size and BTU Output: Match the insert's heating capacity to your room size. Our guide on fireplace heating capacity (BTU guide) and how to size a fireplace will help you calculate the right fit.
• Efficiency Rating: Higher efficiency means more heat delivered per unit of gas. Look for models with high AFUE or steady-state efficiency ratings.
• Flame Realism: Premium inserts offer more realistic logs and flames. If aesthetics matter, consider models with ceramic logs and glowing embers.
• Controls: Decide whether you want a simple on/off switch, a remote control, a thermostat, or smart home integration. Our fireplace thermostat guide explains the differences.
• Blower: A built-in blower helps circulate heat more effectively. Our fireplace blower fan guide covers the benefits.
• Safety Features: Look for oxygen depletion sensors, automatic shutoff, and sealed combustion systems.

For specific product types, explore our articles on gas fireplace inserts with glass rocks, natural gas ventless fireplace inserts, and direct vent gas fireplace inserts with blower.

Once your natural gas fireplace is installed, a few ongoing practices will keep it running safely and efficiently.

• Annual Inspection: Have a qualified technician inspect the fireplace and venting system every year. Our gas fireplace inspection guide explains what's checked.
• Clean the Glass and Burner: Regular cleaning prevents soot buildup and ensures proper combustion. See our guides on how to clean fireplace glass and how to clean a gas fireplace burner.
• Check for Gas Smells: If you ever smell gas, turn off the fireplace, ventilate the area, and contact your gas provider immediately. Our article on gas fireplace smells like gas covers what to do.
• Carbon Monoxide Awareness: Install a CO detector near the fireplace. Learn the signs in our guide on carbon monoxide signs from fireplace.
• Seasonal Care: Follow a seasonal maintenance routine. Our fireplace maintenance schedule and seasonal fireplace checklist provide month-by-month guidance.

For a complete overview, visit our gas fireplace maintenance guide and fireplace maintenance checklist.

If converting to natural gas isn't feasible—perhaps you don't have gas service or your fireplace isn't a good candidate—there are other options worth considering.

• Electric Fireplace Inserts: Electric inserts are easy to install and require no venting. They're a popular choice for replacing wood burning fireplaces with electric inserts. Explore our electric fireplace inserts for existing fireplaces guide.
• Propane Gas Inserts: If natural gas isn't available but you have propane service, a propane insert is a viable alternative. See our article on propane fireplace insert vent free and propane fireplace inserts.
• Wood Burning Stove Inserts: For those who still want to burn wood but with greater efficiency, a wood stove insert is an option. Our wood burning stove fireplace insert guide covers this.
• Ventless Gas Logs: If a full insert isn't in the budget, gas logs offer a simpler retrofit. Learn about converting a wood burning fireplace to gas logs.

For a comprehensive comparison, see our electric vs gas vs wood fireplace comparison and pros and cons of each fireplace type.