ASL
A bathroom exhaust fan does more than clear steam from the mirror. It removes the moisture that leads to mold, peeling paint and swollen cabinets, and it clears odors. Many older fans are loud, weak and vented poorly, so they run without doing much. ASL Electric installs and replaces bathroom exhaust fans and bathroom lighting across Orange County, sized, wired and vented correctly.
We replace noisy fans with quiet, efficient models, add fans to bathrooms that do not have one, install fan and light combinations, humidity-sensing fans and timer switches, and update vanity lighting and lighted mirrors. Because bathrooms are wet locations, we use damp-rated fixtures and GFCI-protected outlets and wire everything to the California Electrical Code.
Bathroom fan and lighting services
⚡Exhaust fan replacement
Replacing old, noisy or failed fans with quieter, more efficient models, sized for the bathroom.
⚡New exhaust fan installation
Adding a fan to a bathroom that relies on a window, including wiring, a ceiling opening and venting.
⚡Fan and light combinations
Combination fan, light and night-light units, wired for separate control.
⚡Humidity-sensing and timer controls
Fans that turn on automatically when humidity rises, and timer switches that keep the fan running after a shower.
⚡Vanity lighting and lighted mirrors
Vanity bars, sconces and backlit mirrors, placed for even, flattering light and wired to code.
⚡Bathroom outlets and GFCI
GFCI-protected outlets near sinks, and added outlets for hair tools and toothbrush chargers.
Signs your bathroom fan needs replacing
Replace or upgrade your fan if:
- The mirror stays fogged long after a shower
- The fan is loud, rattles or hums
- Mold or mildew appears on ceilings or grout
- Paint is peeling or cabinets are swelling
- The fan does not seem to move air
- There is no fan, only a window
- The fan is vented into the attic instead of outside
- Vanity lighting casts shadows or flickers
Why ventilation matters
Every shower releases moisture into the air. Without a working fan that is properly vented to the outside, that moisture settles on ceilings and walls, feeding mold and damaging finishes, or ends up in the attic. A correctly sized, quiet fan that people actually turn on, or that turns on by itself, protects your home and makes the bathroom more comfortable.
Recent work by our electricians
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Real ASL Electric jobs in Orange County homes and businesses.
How we install a bathroom fan
Size the fan
We size the fan for the bathroom's dimensions and layout, and recommend quiet models people will actually run.
Check the venting
We confirm the duct runs to the outside through a proper roof or wall cap, not into the attic, and improve the ducting where needed.
Wire and control
We wire the fan with the right switch, timer or humidity control, and use GFCI protection where required.
Test and finish
We test airflow and controls, seal around the housing and clean up.
Bathroom fan options
Exhaust-only fan
A quiet, efficient fan for moisture control, with a timer or humidity switch.
Fan and light combo
Ventilation and lighting in one fixture, ideal for smaller bathrooms.
Humidity-sensing fan
Turns on automatically when moisture rises, perfect for kids' and guest baths.
Remote or inline fan
A fan mounted in the attic for very quiet operation and larger bathrooms.
Choosing a quiet, effective fan
Fans are rated by airflow, in cubic feet per minute (CFM), and by sound, in sones. A common rule of thumb is about 1 CFM per square foot of floor area for typical bathrooms, with more for larger rooms and separate toilet or shower areas. Lower sone ratings mean quieter fans; many modern fans run at 1 sone or less, which is very quiet.
A quiet fan is a fan people actually use. Paired with a humidity sensor or a timer switch, it runs long enough to clear moisture without anyone having to remember.
Lighting a bathroom well
Overhead lighting alone casts shadows on your face at the mirror. Vanity lights at the sides of the mirror, or a lighted mirror, give even light for grooming. Recessed lights rated for damp or wet locations work well over showers and tubs.
Color temperature matters in bathrooms: many homeowners prefer a warm to neutral white for natural-looking skin tones. We help you choose fixtures and placement so the room is bright where you need it and comfortable at night.
Venting done right
A fan is only as good as its duct. The duct should be the size the fan specifies, as short and straight as possible, insulated where it passes through an unconditioned attic to limit condensation, and terminated at a proper roof or wall cap with a damper. Long, crushed or undersized ducts can cut a fan's airflow dramatically.
When we replace a fan, we check the duct run, repair or replace it where needed, and confirm it actually vents outside.
Fans and lighting during a bathroom remodel
A remodel is the ideal time to get ventilation and lighting right, because the ceiling and walls are open. Moving a fan closer to the shower, adding a recessed light rated for wet locations over the tub, adding vanity sconces at face height, and planning outlets for hair tools and heated features are all simpler before drywall goes up.
We can rough in the fan, lighting and outlets on your contractor's schedule, pass the inspection, and come back to install the fixtures once tile and paint are done.
“I'm extremely happy. Cory did an excellent job. He was professional, courteous, intelligent and polite. He replaced our bathroom fan with a much nicer model that is more efficient and quieter than the original model. I strongly recommend Cory and ASL electric.”
What affects the cost of a bathroom fan installation
The main factors are whether you are replacing an existing fan or adding a new one, whether the opening or housing must be changed, the condition and route of the duct to the outside, attic access, the type of fan and controls, and any added lighting or outlets. Estimates are free.
How it works with ASL Electric
Share the size of the room and whether there is an existing fan.
We check the wiring and venting and give you an upfront price.
We install the fan and controls, test airflow and clean up.
Bathroom Exhaust Fans & Lighting across Orange County
Bathroom fan upgrades are common in Orange County's 1970s and 1980s homes in Mission Viejo, Laguna Hills, Irvine, Lake Forest and Aliso Viejo, where original fans are often loud, underpowered and sometimes vented into the attic. A customer had us replace their bathroom fan with a much nicer model that was more efficient and quieter than the original, and our electrician's professionalism earned a strong recommendation.
We often update vanity lighting, lighted mirrors and GFCI outlets at the same visit, and if you are remodeling the whole bathroom, our sister company, ASL Plumbing, can handle the plumbing side.