Gas Fireplace Insert Installation | Red Seal Fireplace, Chimney & HVAC

Gas Fireplace Insert Installation

Turn a cold, ash-covered wood fireplace into a clean, efficient gas insert that lights with the flip of a switch. Our team handles the inspection, venting, gas hookup, and finishing — so you get instant, consistent heat with none of the upkeep.

Why Homeowners Switch to a Gas Insert

An open wood-burning fireplace looks great but loses most of its heat straight up the chimney, and comes with ash, smoke, and regular cleaning. A gas insert fits into your existing fireplace opening and turns it into a real heat source — efficient, clean, and ready with the push of a button.

High Efficiency

Heats your home using less fuel

Clean & Convenient

No wood, no ashes, just instant warmth

Consistent Heat

Provides steady, comfortable heat

Environmentally Friendly

Lower emissions than wood burning

What's Included in the Installation

1

Inspection & Measurement

The existing fireplace is inspected for condition and measured to ensure the insert will fit properly.

2

Prepare Fireplace

The damper is fixed open or removed. The firebox and chimney are cleaned and inspected, and a gas line is run to the fireplace.

3

Insert Installation

The gas insert is carefully placed into the fireplace and centered. The venting system is connected to the chimney.

4

Gas & Electrical Connection

The gas line is connected to the insert and tested for leaks. The electrical connection for the blower and controls is completed.

5

Finished Look

The insert is tested to ensure safe operation. The fireplace now provides efficient, clean, and easy-to-use heat.

Before and after brick fireplace gas insert installation, plus step-by-step process and typical gas insert system diagram

Parts of a Typical Gas Insert System

Vent Collar

Connects the insert to the chimney liner, giving combustion gases a sealed path out of the home.

Heat Exchanger

Warms air passing through the unit and increases overall heating efficiency.

Firebox

A heavy-duty steel firebox built for durability and consistent performance.

Surround Trim

A finished surround for a clean, custom look that fits your existing fireplace opening.

Gas Line

Supplies fuel directly to the insert, installed and tested for a safe, leak-free connection.

Blower (Optional)

Circulates warm air into the room for faster, more even heating throughout the space.

What You Get

  • Full inspection and measurement of your existing fireplace
  • Damper preparation and firebox/chimney cleaning
  • Gas line run and connected to the insert
  • Insert centered, secured, and vented to the chimney
  • Electrical connection for blower and controls, where applicable
  • Full leak test and safe-operation check before we leave

Frequently Asked Questions

Will a gas insert fit my existing fireplace?

Most standard masonry fireplace openings can accommodate a gas insert, but exact fit depends on the size and condition of your firebox and chimney. We measure and inspect before recommending a unit so there are no surprises.

Do I need a chimney liner for a gas insert?

Yes. The insert vents through a liner installed inside your existing chimney, sized to the appliance. If your chimney isn't already lined for gas, that gets addressed as part of the installation.

How long does installation take?

Most gas insert installations are completed in a single day, depending on chimney condition, gas line routing, and site access.

Can I still get the look of a wood fire?

Yes. Modern gas inserts use realistic log sets and flame patterns designed to closely resemble a wood-burning fire, without the smoke, ash, or maintenance.

Book a Free Gas Insert Assessment

If you're ready to trade wood, ash, and drafty heat loss for clean, instant warmth, our team can confirm what your fireplace needs and give you clear, upfront pricing.

Call (604) 679-3330
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