How much to install a bathroom exhaust fan?

Installing a bathroom exhaust fan in New Brunswick typically costs $300-$600 for a basic installation, or $500-$900 if new wiring is required. The final price depends on whether you already have electrical supply to the fan location and the complexity of the ductwork.

Basic Installation (existing electrical): If your bathroom already has electrical supply for a fan, replacing an old unit or installing where rough-in exists runs $300-$600. This includes the fan unit ($100-$300), labor for mounting and connecting ductwork, and basic electrical connections. Most quality bathroom fans suitable for New Brunswick's humid climate fall in the $150-$250 range.

New Installation (new circuit required): When installing a fan where none existed before, costs jump to $500-$900 because new electrical supply is needed. In New Brunswick, this requires a TSANB electrical permit since you're adding a new circuit. The electrician must run new 14-gauge wire from your panel to the fan location, install a switch, and ensure proper GFCI protection if the switch is within 1.5 meters of the sink or tub area per Canadian Electrical Code requirements.

Ductwork considerations significantly impact cost in New Brunswick homes. The fan must exhaust outside - never into an attic or crawl space due to our humid Maritime climate. If existing ductwork needs replacement or the exhaust route is complex (multiple floors, long runs), add $200-$400. Proper insulation around the ductwork prevents condensation issues common in NB's freeze-thaw cycles.

Fan sizing matters for New Brunswick bathrooms. Calculate 1 CFM per square foot of bathroom space, with a minimum 50 CFM rating. For bathrooms over 100 square feet, add 50 CFM for each toilet, tub, or shower. Undersized fans won't handle Maritime humidity effectively, leading to mold and moisture problems.

Safety and code compliance require professional installation. While homeowners can legally replace an existing fan unit in New Brunswick, any new electrical work requires a licensed electrician and TSANB permit. Improper installation risks electrical shock in wet environments, inadequate ventilation, and insurance claim denial.

Additional costs may include drywall patching ($100-$200), roof work for new exterior vents ($150-$300), and upgraded switches like timer or humidity-sensing controls ($50-$150). Many New Brunswick electricians offer package deals combining fan installation with other bathroom electrical upgrades.

Need help finding an electrician for your bathroom fan installation? New Brunswick Electrical can match you with local professionals who understand TSANB requirements and Maritime climate considerations for a free estimate.