How much does it cost to install a direct vent gas fireplace through an exterior wall in my Ottawa home?

Installing a direct vent gas fireplace through an exterior wall in Ottawa typically costs $3,500 to $7,500 for a standard unit, or $5,000 to $12,000 for a premium linear model. This includes the fireplace unit, direct vent termination kit, gas line connection, electrical work for ignition and blower, and professional installation by a TSSA-licensed gas fitter.

The direct vent configuration is ideal for Ottawa homes because it's completely sealed from your living space — combustion air comes from outside through the outer pipe of the coaxial vent, while exhaust gases exit through the inner pipe. This design maintains excellent indoor air quality and doesn't create negative pressure issues in your tightly sealed home during our long heating season. Direct vent units are also the most efficient gas fireplace option, converting 70 to 85 percent of the gas into usable heat rather than losing it up a traditional chimney.

Several factors affect your total cost in Ottawa. The fireplace unit itself ranges from $1,800 to $4,500 for standard models and $3,000 to $8,000 for premium linear units with advanced features. Installation labour typically runs $800 to $1,500, including cutting the wall penetration, installing the vent termination, and connecting the unit. If you need a new gas line run from your meter or existing line, add $500 to $1,500 depending on distance and complexity. Electrical work for hardwired ignition or blower fans adds $200 to $500. The vent termination kit costs $200 to $400, and you may need a hearth pad or wall protection depending on your unit's clearance requirements.

Timing matters significantly in Ottawa's climate. Schedule installation between May and October when contractors can safely work on exterior wall penetrations without weather delays. The vent termination must be properly sealed and flashed to prevent ice damming and water infiltration during our freeze-thaw cycles. Your installer must also ensure adequate clearance from windows, doors, air intakes, and property lines as specified by the Ontario Building Code.

All gas work must be performed by a TSSA-licensed gas fitter — this is Ontario law, not a suggestion. Unlicensed gas work voids your home insurance and creates serious carbon monoxide and explosion risks. After installation, the technician will tag your appliance with a compliance label and provide documentation for your records. Install carbon monoxide detectors on every level of your home, especially near sleeping areas.

When you're ready to move forward, you can browse TSSA-licensed gas fitters and fireplace installers through the Ottawa Construction Network directory to compare local professionals and get detailed quotes for your specific installation.