How to Upgrade an Old Wood-Burning Fireplace to Gas

Upgrading an old wood-burning fireplace to a gas fireplace is one of the most common requests we see from Long Island homeowners.

If you’re tired of hauling wood, cleaning ash, or dealing with inconsistent heat, converting to gas can give you:

• Instant ignition
• Better heat control
• Cleaner operation
• Less maintenance
• A more modern look
  

But the process is not as simple as sliding in a gas unit and flipping a switch.

Here’s what you actually need to know before making the switch.

Can You Convert a Wood-Burning Fireplace to Gas?

Yes, in most cases you can convert a wood-burning fireplace to gas. But the method depends on your existing setup.

There are three common upgrade paths:

1. Install a gas log set inside your existing firebox
2. Install a gas fireplace insert
3. Fully remove the old unit and install a new gas fireplace
   

The right option depends on your chimney condition, how much heat you want, and whether your goal is aesthetics or real heating performance.

Option 1: Installing a Gas Log Set (Simplest Conversion)

A gas log set is the quickest and most affordable way to convert.

It fits inside your existing wood-burning firebox and connects to a gas line. It gives you the look of real flames without burning wood.

Best for homeowners who:

• Primarily want ambiance
• Already have a functioning chimney
• Do not need major heat output
  

Important: Most gas log sets are decorative. They are not designed to heat your entire room efficiently.

Option 2: Installing a Gas Fireplace Insert (Most Popular Upgrade)

This is the most common and practical upgrade.

A gas insert is a sealed firebox that slides into your existing masonry fireplace. It includes its own venting system and dramatically improves efficiency.

Benefits include:

• Strong, controllable heat output
• Improved energy efficiency
• Sealed combustion for better safety
• Modern design options
  

If your current fireplace is drafty or inefficient, a gas insert will likely be your best long-term solution.

The Fireplace Factory carries premium gas fireplace brands including American Hearth, Fireplace Xtrordinair, and DaVinci Custom Fireplaces, all designed for performance and visual impact.

Option 3: Full Fireplace Replacement

In some cases, your existing fireplace may be:

• Structurally damaged
• Improperly sized
• Outdated beyond repair
• Poorly vented
  

When that happens, full replacement may make more sense than retrofitting.

This allows you to:

• Change the size or placement
• Upgrade to direct vent technology
• Redesign the entire look of the room
  

It is more involved but offers the most flexibility.

Do You Need to Run a New Gas Line?

In many homes, yes.

If you do not already have a gas line near your fireplace, one will need to be installed. This must be done professionally and in compliance with local codes.

On Long Island, permitting and inspection requirements vary by township. Working with a licensed, experienced installer helps prevent delays.

What About Venting?

This is one of the most important parts of the conversion.

Your options may include:

• Using your existing chimney with a liner
• Installing a direct vent system
• Switching to a ventless model (where permitted)
  

Direct vent gas fireplaces are a popular choice because they are sealed and vent to the outside, improving efficiency and indoor air quality.

Venting configuration is not one-size-fits-all. It depends on your chimney height, structure, and layout.

How Much Does It Cost to Convert to Gas?

Costs vary depending on:

• Type of conversion
• Gas line installation
• Venting requirements
• Surround or finishing updates
• Permit requirements
  

A basic gas log set conversion is often a more affordable option than a full insert or replacement.

The only accurate way to price it is through an in-home evaluation or showroom consultation.

How Long Does the Conversion Take?

Most gas insert installations take one day once materials are ready.

Full replacements may take longer depending on construction needs and inspections.

Lead time for ordering the unit itself can vary based on brand and season.

If you are planning this before winter, schedule early. Fall is the busiest time of year for fireplace installations on Long Island.

Is Converting to Gas Worth It?

For many homeowners, yes.

You gain:

• Instant on/off convenience
• Lower maintenance
• Better heat control
• Cleaner operation
• Increased daily usability
  

If your wood-burning fireplace is rarely used because it feels like a hassle, converting to gas often brings it back into regular use.

What Long Island Homeowners Should Do Next

If you are seriously considering upgrading your wood-burning fireplace to gas, your next step should be evaluating:

• The condition of your existing firebox
• Chimney structure
• Desired heat output
• Design goals
  

Seeing units in person helps you understand flame presentation, size, and control features.

The Fireplace Factory showroom in Bellmore and Bohemia, NY allows you to compare gas inserts, log sets, and full fireplace systems side by side so you can choose the right solution for your home.

If you are ready to make your fireplace easier, cleaner, and more efficient, a gas conversion may be the upgrade that makes the most sense.

Take the Next Step

👉 Visit our Bohemia or Bellmore showroom for a free one-on-one consultation. We’ll help you choose the perfect option for your space and budget to convert your wood fireplace to gas.