Converting an old wood-burning fireplace to a gas fireplace is one of the most popular renovations in Québec: you keep the ambiance of a fire, but without logs, ashes, or the hassle. In Québec, an installed indoor gas fireplace typically costs between $4,000 and $6,000, and a propane solution can start around $3,500. The real cost depends on the unit you choose, the condition of your chimney, and the connection. Here is the budget breakdown and the factors that make the bill vary.
Why convert a wood-burning fireplace to a gas fireplace?
Because gas provides instant heat with a remote control, with no wood handling or ash cleanup, and it works even during a power outage. In Montréal, the conversion also addresses a compliance issue: old, non-certified wood-burning appliances have been prohibited from use since 2018, while gas remains permitted.
A gas fireplace insert often fits into the existing masonry, which avoids demolition. It is a straightforward way to modernize an aging hearth. To compare the two energy sources, see our guide gas or wood fireplace.
How much does a gas conversion cost in 2026?
In Québec, the price of an installed indoor gas fireplace generally ranges from $4,000 to $6,000, depending on the unit and the complexity of the project. A propane installation can start around $3,500. These amounts vary depending on the finish, output, and required work.
| Item | Estimated cost |
|---|---|
| Unit (gas fireplace insert) | Starting at about $1,500 |
| Connection / chimney | About $400 to $800 |
| Propane tank (if applicable) | About $400 |
| Installed indoor gas fireplace (typical total) | $4,000 to $6,000 |
These ranges are indicative (sources: Québec 2026 price comparisons). The exact figure requires an in-home assessment, which takes your chimney and connection into account.
What makes the conversion price vary?
Four factors weigh the most: the unit and its output, the condition of the chimney flue, the type of connection (existing natural gas or a new line, or propane with a tank), and the desired finish (logs, pebbles, glass, lighting). A flue in good condition significantly reduces the bill; relining work increases it.
The choice between natural gas and propane also matters: natural gas avoids a tank where the network is available, while propane suits areas that are not serviced.
Natural gas or propane for your conversion?
Natural gas is generally more economical to use and requires no tank, ideal on the Island of Montréal and in Laval. Propane is for areas that are not connected, with an outdoor tank. Our Technical Project Managers verify your connection during the assessment and recommend the most economical solution for your address.
In the field: a successful conversion in Montréal
A Montréal family had a masonry wood-burning fireplace that had become non-compliant and was rarely used. Our Technical Project Managers installed a direct-vent gas fireplace insert in the existing hearth, without demolition. The family now enjoys adjustable heat at the touch of a button, and the unit complies with regulations. For replacement options, also see our guide to replacing an old wood stove.
FAQ: converting a wood-burning fireplace to gas
How much does a gas conversion cost in Québec?
An installed indoor gas fireplace generally costs $4,000 to $6,000; a propane solution can start around $3,500, depending on the unit and the connection.
Can gas be installed in my existing chimney?
Often yes, with a fireplace insert and the appropriate relining. The condition of the flue is validated during the assessment.
Natural gas or propane?
Natural gas is more economical where the network is available; propane suits areas that are not serviced.
Does the conversion address compliance in Montréal?
Yes, gas is permitted while old, non-certified wood-burning appliances have been prohibited from use since 2018.
Want a precise number for your fireplace? Request your free in-home assessment.
