Integrated Electrical Solutions Adds a Vented Bath Fan and Shower Light in Manchester

Homeowner-Supplied Fixtures

The Manchester homeowner bought the fan, the lights, and the switches before the job. Integrated Electrical Solutions handled the wiring, mounting, venting, and testing. Before the job starts, a homeowner buying their own fan should check its airflow rating. The Home Ventilating Institute recommends about 1 CFM per square foot of floor area for bathrooms up to 100 square feet, with a 50 CFM minimum. 

Wiring Run Through the Attic

Integrated Electrical Solutions ran new cable through the attic and down the wall, which left the bathroom walls intact. A 14/3 cable feeds the fan and its light, and its extra conductor lets each run on its own switch. A 14/2 cable serves as the switch leg for the recessed shower light. The National Electrical Code (NFPA 70) limits 14-gauge wire to 15-amp circuits, so the cable size has to match the breaker.

Bathroom Fan Installation in Manchester

The new fan is ducted through the attic and out the soffit, ending at a new soffit vent. The International Residential Code, which New Jersey adopts through the NJ Department of Community Affairs, requires bathroom exhaust to discharge outdoors rather than into the attic. Exhaust dumped into an attic soaks insulation and can lead to mold on the roof sheathing.

Soffit, Roof, or Wall Venting

Soffit venting avoids cutting a hole in the roof, which removes one possible leak point. The limitation is that humid air leaving a soffit vent can be pulled back in through nearby soffit intake vents, so the duct should end at a dedicated exhaust vent, not a perforated soffit panel. A roof vent works best on long attic runs or where the soffit is crowded with intake vents. A wall vent suits bathrooms on an exterior wall with no attic above.

Four Controls in a 2-Gang Box

Integrated Electrical Solutions troubleshot the old switch box, removed the single-gang box, and installed a 2-gang cut-in box. Two switch-over-switch devices fit four controls into that space: fan and fan light on one, vanity light and shower light on the other. A Leviton Decora-style rocker switch and a floor heat thermostat round out the controls.

That puts four separate controls in a standard two-switch space. We also installed a Decora switch and a floor heat thermostat.

GFCI Protection at the Outlets

Three GFCI outlets now protect the room. The National Electrical Code requires GFCI protection for bathroom receptacles because water and electricity are close together. The Electrical Safety Foundation International recommends testing GFCI outlets monthly with the built-in test button.

The Result

Before leaving, our electrician tested every fan, light, switch, and outlet to confirm everything worked. The homeowner now has:

• A properly vented bathroom that clears moisture
• A well-lit shower
• Separate control over the fan, fan light, vanity light, and shower light
• GFCI-protected outlets

The homeowner supplied the fan, lights, and switches, and we handled the installation from start to finish.