Exhaust Fan Installation in Scarborough

How Exhaust Fan Installation Works

1. 1

   Assessment & venting check

   We check your existing fan’s wiring and switch setup and, critically, where the duct actually terminates, since a disconnected or attic-vented duct is a common hidden issue.

2. 2

   Fan & circuit planning

   We size the fan in CFM to the room and help you choose between a standard, humidity-sensing, or fan/light/heater combo unit, then confirm whether a dedicated circuit or switch leg is needed.

3. 3

   Installation & duct routing

   We install the fan housing, run or correct the ductwork to a proper exterior vent cap, and wire it to its own switch or sensor control.

4. 4

   Testing

   We test airflow and confirm the duct is fully sealed and venting outside before we consider the job done, not just that the fan spins.

Frequently Asked Questions

We’re renovating a bathroom in our Birchcliff bungalow — should we replace the exhaust fan too?

Usually yes, especially in a bungalow of that era. We commonly find the original fan duct just pushed into the attic rather than vented outside, so a renovation is the natural time to fix the routing along with upgrading the fan itself.

Our Guildwood lot is deep and the bathroom is nowhere near an outside wall — is that a problem?

It affects the routing, not whether it’s possible. On larger Guildwood lots we often run the duct up through the roofline instead of out a side wall, and we plan the vent location around your mature trees rather than the shortest theoretical path.

Why does my bathroom still feel humid after running the exhaust fan?

This usually means the fan is underpowered for the room or, more often, that the duct isn’t actually venting outside. We check where your ductwork terminates as part of every assessment, since a disconnected or attic-vented duct is a surprisingly common issue.

Do I need a dedicated circuit for a new exhaust fan?

Not always. Many bathroom fans can run on a shared switch leg with the lighting, but a humidity-sensing or timer-controlled fan usually needs to operate independently, which we can wire as part of the installation.

Can you install an exhaust fan where there isn’t one currently?

Yes, including running new ductwork to a proper exterior vent cap and wiring a new switch or sensor control, for bathrooms or kitchens that were never fitted with one.

Is my home required to have a bathroom exhaust fan?

The Ontario Building Code requires mechanical ventilation in any bathroom without an operable window. Older homes sometimes predate this requirement or had a fan added without a permit, which we can assess and correct.

How much does exhaust fan installation cost?

Cost depends mainly on the ducting: whether an existing vent run can be reused, how far the fan is from an exterior wall or roofline, and whether a dedicated circuit is needed. We provide a clear quote after seeing the space.