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Bathroom Exhaust Fan Installation
Premium Electrical Service

Bathroom Exhaust Fan Installation in Northern Virginia | Expert Installation

Quiet, powerful exhaust fans to eliminate moisture, mold, and odors from bathrooms.

40+ Years
Licensed & Insured
5-Year Warranty
Same-Day Service
Upfront Pricing
1,200+ Reviews

Why is this important?

AJ Long Team Working

Proper bathroom ventilation is essential for protecting your home from moisture damage, mold growth, and deteriorating finishes. A quality exhaust fan removes humid air generated by showers and baths, preventing the moisture problems that lead to peeling paint, warped trim, mold behind walls, and even structural rot in severe cases. AJ Long Electric installs premium bathroom exhaust fans throughout Northern Virginia homes in Fairfax County, Loudoun County, Prince William County, and Arlington. We specialize in ultra-quiet fans rated at 1.0 sone or less -- so quiet you can barely hear them running -- from top brands including Panasonic WhisperCeiling, Broan-NuTone, and Delta BreezSlim. Our electricians handle complete installations including fan unit mounting, dedicated circuit wiring, ductwork routing to the exterior, and proper roof or soffit vent termination. We also replace existing noisy or underperforming fans with modern, efficient units and install combination fan-light-heater units for added functionality. Every installation includes proper CFM sizing based on your bathroom's square footage per ASHRAE standards, ensuring adequate air exchange. We verify that exhaust ducting terminates outside your home -- never into an attic or soffit -- to prevent moisture from accumulating in unintended areas.

Mold Prevention

Remove moisture-laden air that causes mold growth, peeling paint, and structural damage.

Ultra-Quiet Operation

Modern fans rated at 0.3-1.0 sones are virtually silent compared to older, noisy units.

Energy Efficiency

Energy Star-rated fans use minimal electricity while providing powerful ventilation.

Combined Functionality

Combination units add lighting, heating, or humidity sensors to the exhaust fan.

Home Protection

Proper ventilation prevents moisture damage to drywall, framing, and finishes.

Signs You Need This

Your bathroom mirror stays fogged for a long time after showers
You notice mold or mildew on bathroom surfaces, grout, or ceiling
Your current exhaust fan is loud or rattles when running
Paint is peeling or bubbling on bathroom walls or ceiling
Your bathroom has no exhaust fan at all
The existing fan barely moves air even on the highest setting
Musty odors linger in the bathroom after use
Your exhaust fan vents into the attic instead of outside

Need Help Now?

Our licensed electricians are ready to assist you in Northern Virginia.

Service Areas

Serving Fairfax, Arlington, Alexandria, Loudoun, and Prince William Counties.

Local Expertise

Northern Virginia Service Context

Serving the DMV Region

Fairfax, Arlington, Alexandria, Loudoun & Prince William Counties

Northern Virginia's humid subtropical climate makes bathroom ventilation a critical home maintenance issue, not just a comfort feature. Summer humidity regularly exceeds 70%, and when that moisture combines with steam from showers, inadequately ventilated bathrooms become breeding grounds for mold and mildew. Homes in Fairfax County, Loudoun County, and Prince William County are particularly susceptible because many were built during the housing booms of the 1980s-2000s with builder-grade exhaust fans that are now 20-40 years old, underpowered, and often venting into attic spaces rather than outside. Attic-vented exhaust fans are one of the most common code violations our electricians discover during inspections throughout the region, and the moisture damage they cause to attic sheathing and insulation can cost thousands to remediate. The demand for quiet operation is strong in Northern Virginia -- homeowners frequently tell us their existing fan is so loud they avoid using it, which defeats its purpose entirely. Modern fans operating at 0.3-1.0 sones are barely perceptible, encouraging regular use. AJ Long Electric installs hundreds of bathroom exhaust fans annually across Arlington, Reston, Herndon, Burke, Centreville, and throughout the NoVA region, and we ensure every installation vents properly to the exterior with insulated ductwork and a backdraft damper.

Licensed in Virginia
Master Electrician
Same-Day Available
Local Since 1985
Real Projects

Bathroom Exhaust Fan Installation Case Studies

See how we have helped homeowners across Northern Virginia with their bathroom exhaust fan installation needs.

Master Bathroom Mold Remediation and Ventilation Upgrade

colonial
Colonial home in Fairfax, Fairfax County

Challenge

A homeowner discovered black mold behind the bathroom ceiling paint and along the shower grout. An investigation revealed the original 1994 exhaust fan was venting directly into the attic, depositing warm, moist air onto the attic insulation and roof decking. The existing fan was also underpowered at only 50 CFM for a large master bathroom.

Solution

AJ Long Electric removed the old fan and installed a Panasonic WhisperCeiling 150 CFM unit sized for the 120-square-foot master bath. We routed new 6-inch insulated ductwork through the attic to a new roof cap vent, eliminating the attic moisture dump. A humidity-sensing wall switch was installed for automatic fan activation.

Result

The bathroom clears steam in under 5 minutes after a hot shower, the attic moisture issue is completely resolved, and the fan operates at 0.3 sones -- so quiet the homeowner initially thought it was not running. The mold remediation company confirmed the ventilation fix addressed the root cause.

Three-Bathroom Exhaust Fan Replacement Package

townhome
Townhome in Centreville, Fairfax County

Challenge

All three bathrooms in a 2003 townhome had original builder-grade exhaust fans that were loud, ineffective, and one had stopped working entirely. The second-floor hall bathroom had visible mildew on the ceiling, and the ground-floor powder room had no fan at all despite having no window. None of the existing fans had been cleaned in years.

Solution

We replaced both second-floor exhaust fans with Broan-NuTone ultra-quiet 80 CFM models using existing ductwork after cleaning and inspecting the ducts. For the powder room, we installed a new Panasonic WhisperFit 80 CFM fan with a new duct run to an exterior wall vent. Each bathroom received a timer switch allowing 20, 40, or 60-minute run times.

Result

All three bathrooms now have effective, quiet ventilation. The mildew issue in the hall bathroom stopped within weeks of the installation, and the powder room has its first-ever exhaust fan. The total project was completed in a single day.

Combination Fan-Light-Heater for Bathroom Renovation

split-level
Split-level in Alexandria, Arlington County

Challenge

During a bathroom renovation in a 1968 split-level, the homeowner wanted to replace a bare ceiling light fixture with a combination unit that provided ventilation, lighting, and supplemental heat for the cold winter mornings typical in their poorly insulated bathroom. The existing wiring was a single switch leg with no dedicated circuit.

Solution

AJ Long Electric installed a Broan-NuTone combination fan-light-heater unit with a 1500-watt heating element, 100 CFM fan, and integrated LED light. We ran a new dedicated 20-amp circuit from the panel to support the heater element and installed a four-function wall switch for independent control of fan, light, heat, and night light.

Result

The homeowner gained three functions from a single ceiling unit, and the dedicated circuit ensures the heater runs without tripping breakers. Morning bathroom temperatures are noticeably warmer, and the integrated LED eliminated the need for a separate light fixture.

Luxury Spa Bathroom with Dual Ventilation Zones

estate
Estate home in McLean, Fairfax County

Challenge

A high-end master bathroom renovation featured a 200-square-foot space with a freestanding soaking tub, oversized steam shower, and separate water closet. The architect specified independent ventilation zones to handle the extreme steam production from the walk-in steam shower without over-ventilating the rest of the bathroom.

Solution

We installed two exhaust fans: a Panasonic WhisperCeiling 200 CFM unit directly above the steam shower with a dedicated humidity sensor, and a separate 80 CFM unit in the water closet area. The steam shower fan was connected to an inline duct booster to handle the 12-foot duct run to the roof cap. Both fans operate independently with separate controls.

Result

Even during extended steam shower sessions, the bathroom remains comfortable and clear outside the shower area. The dual-zone approach prevents over-extraction of heated air from the main bathroom while aggressively venting the steam shower enclosure. The project passed Arlington County inspection with no corrections.

Permits & Compliance

Permit & Jurisdiction Guide

Permit requirements for bathroom exhaust fan installation vary by county. We handle the entire permitting process for you.

Fairfax County

No Permit Needed

Permit Process

Like-for-like exhaust fan replacement does not require a permit in Fairfax County. New installations requiring new ductwork penetrations or dedicated circuits may require an electrical or mechanical permit through Land Development Services.

Inspection Notes

Replacement work is not inspected. New installations with circuit work are inspected for proper GFCI protection, duct termination, and circuit sizing.

Special Requirements

Exhaust must terminate to exterior per Virginia building code
GFCI protection required on all bathroom circuits

Loudoun County

No Permit Needed

Permit Process

Fan replacement on existing wiring is permit-exempt. New ductwork penetrations through the roof or exterior wall may require a building permit through Loudoun County Building and Development.

Inspection Notes

Replacement installations are not inspected. New roof or wall penetrations may be inspected as part of a building permit.

Special Requirements

Roof penetrations must be properly flashed and sealed
Duct termination must include a backdraft damper

Prince William County

No Permit Needed

Permit Process

Simple replacement is permit-exempt. New circuit work requires an electrical permit through Prince William County Development Services. New roof penetrations may require a separate building permit.

Inspection Notes

No inspection for like-for-like replacement. Electrical permit work is inspected for NEC compliance including GFCI protection.

Special Requirements

Combination fan-heater units on new dedicated circuits require electrical permit
All bathroom circuits must be GFCI-protected

Arlington County

No Permit Needed

Permit Process

Exhaust fan replacement is permit-exempt in Arlington County. New circuit installations require an electrical permit through the Inspection Services Division. Turnaround is typically 1-3 business days for inspection.

Inspection Notes

No inspection for replacement. New circuit work is inspected for proper breaker sizing, GFCI protection, and NEC compliance.

Special Requirements

Energy code compliance may apply to fan efficiency in certain renovation scopes
GFCI protection required on all bathroom electrical work
Pricing Options

Bathroom Exhaust Fan Installation Pricing Tiers

Transparent pricing with options to fit your budget and project scope. Every tier includes our quality guarantee.

Standard

$250-$450

Direct replacement of an existing exhaust fan with a modern, quiet unit using existing ductwork and wiring.

  • Removal of old exhaust fan
  • Installation of new ultra-quiet fan (80-110 CFM)
  • Use of existing ductwork and exterior vent
  • Standard on/off wall switch
Most Popular

Premium

$450-$750

Exhaust fan upgrade with new ductwork routing, proper exterior venting, and humidity-sensing controls.

  • New or upgraded exhaust fan unit
  • Insulated ductwork to exterior vent
  • New roof cap or wall vent installation
  • Humidity-sensing or timer wall switch
  • Correction of improper attic venting

Complete

$750-$1,200

Full installation of combination fan-light-heater unit with dedicated circuit, new ductwork, and multi-function controls.

  • Combination fan-light-heater unit installation
  • Dedicated 20-amp circuit from panel
  • New insulated ductwork to exterior
  • Multi-function wall switch (fan, light, heat, night light)
  • Humidity sensor for automatic operation
  • GFCI-protected circuit per code

Prices may vary based on the specific requirements of your project, the condition of existing electrical systems, and your home's unique characteristics. Contact us for a free, no-obligation estimate tailored to your needs.

By Home Type

Bathroom Exhaust Fan Installation by Housing Type

Different home styles have unique electrical characteristics. Select your housing type to see specific considerations.

Colonial Homes

Common Issues

Second-floor bathroom exhaust ducts often take long, winding paths through the attic to reach a roof vent
First-floor bathrooms may have no direct attic access, requiring duct routing through wall cavities to an exterior wall
Older colonial attics frequently reveal exhaust fans venting directly into attic insulation rather than outside

Special Considerations

Colonial homes offer good attic access above second-floor bathrooms, making ductwork routing relatively straightforward. However, we frequently discover existing ducts that terminate in the attic rather than at a roof cap -- a code violation that causes attic mold. For first-floor bathrooms, we route ductwork through interior wall cavities or through the basement ceiling to an exterior wall vent. We always insulate ductwork in unconditioned attic spaces to prevent condensation.

How It Works

Our Bathroom Exhaust Fan Installation Process

We follow a proven process to ensure your project is completed safely, on time, and to your complete satisfaction.

1

Bathroom Assessment

We evaluate your bathroom size, current ventilation, and ductwork to determine the right fan size and type.

2

Fan Selection

We recommend the best fan based on CFM requirements, noise level preference, and desired features like lights or heaters.

3

Detailed Quote

You receive pricing covering the fan unit, wiring, ductwork, exterior vent, and all labor.

4

Old Fan Removal

We carefully remove the existing fan, inspect the housing opening, and assess the ductwork condition.

5

Installation & Ducting

We mount the new fan, connect wiring, and route insulated ductwork to a proper exterior termination point.

6

Testing & Verification

We test airflow, verify proper exterior venting, and confirm quiet operation at all speeds.

FAQs

Frequently Asked Questions

Get answers to common questions about our bathroom exhaust fan installation services.

What size exhaust fan do I need for my bathroom?

The general rule is 1 CFM per square foot of bathroom area, with a minimum of 50 CFM. A standard 5x8 bathroom needs at least 50 CFM, while a large master bath may need 100-150 CFM. For bathrooms with jetted tubs or steam showers, we size up further. We calculate the exact requirement during our assessment.

How loud are modern bathroom exhaust fans?

Modern fans are dramatically quieter than older units. Fan noise is measured in sones -- the best modern fans operate at 0.3-1.0 sones, which is barely perceptible. By comparison, older fans typically operate at 3-4 sones. Panasonic WhisperCeiling fans at 0.3 sones are our most popular ultra-quiet choice.

How much does bathroom exhaust fan installation cost in Northern Virginia?

Bathroom exhaust fan installation typically costs $250-$600 in the DC metro area for a standard replacement. New installations requiring ductwork routing and exterior venting run $400-$900. Combination fan-light-heater units cost more due to additional wiring. We provide exact pricing after assessing your bathroom.

Should my exhaust fan vent into the attic?

Absolutely not. Exhaust fans must vent to the exterior of your home through a roof cap, soffit vent, or wall vent. Venting into an attic deposits warm, moist air that causes mold growth, wood rot, and insulation damage. If your current fan vents into the attic, we correct this during replacement.

Can I install a fan with a built-in light and heater?

Yes, combination fan-light-heater units are very popular in Northern Virginia bathrooms. They provide ventilation, overhead lighting, and supplemental heat from a single ceiling unit. These require a dedicated circuit and multi-function wall switch. We install all major combination units from Broan-NuTone and Panasonic.

How long should I run the exhaust fan after a shower?

Run the fan for at least 20 minutes after showering to fully remove moisture. Many modern fans include humidity sensors that automatically turn the fan on when moisture is detected and off when humidity returns to normal, eliminating the need to remember. We install sensor-equipped fans for hands-free operation.

Do bathroom exhaust fans need a dedicated circuit?

Standard exhaust fans can typically share a circuit with bathroom lighting. However, combination fan-heater units with heating elements require a dedicated circuit due to their higher power draw. We assess your electrical panel and existing wiring to determine what is needed.

Pricing

What Affects the Cost?

Every home is different. Here are the factors that influence pricing for bathroom exhaust fan installation services.

Replacement vs new installation (new requires ductwork routing)
Fan type (standard, ultra-quiet, combination fan-light-heater)
Ductwork length and routing complexity
Exterior vent type (roof cap, soffit, wall)
Need for dedicated circuit wiring
Accessibility of ceiling and attic space
Humidity sensor or timer switch additions

Get Your Free Estimate

Contact us for a no-obligation quote tailored to your specific needs. We provide upfront, transparent pricing with no hidden fees.

Typical Timeline

2-4 hours

Typical Price Range

$250-$600 (replacement); $400-$900 (new installation)

Warranty & Guarantee

All exhaust fan installations include a 1-year workmanship warranty covering mounting, wiring, and ductwork. Fan units carry manufacturer warranties of 3-6 years depending on brand. Panasonic WhisperCeiling fans include a 6-year warranty.

Brands & Certifications

Panasonic (WhisperCeiling, WhisperFit)Broan-NuToneDelta BreezSlimEnergy Star CertifiedHVI (Home Ventilating Institute) Certified

Maintenance Tips

Clean the fan grille or cover every 6 months to remove dust buildup that reduces airflow
Vacuum the fan motor and blades annually to maintain optimal performance and quiet operation
Check the exterior vent flap periodically to ensure it opens and closes freely
Listen for changes in fan noise that may indicate a failing motor or loose components
Verify the fan moves air by holding a tissue near the grille while running -- it should pull the tissue up

Safety Warnings

Never vent a bathroom exhaust fan into an attic, crawlspace, or soffit -- always vent to the exterior
Combination fan-heater units require dedicated circuits to prevent overloading
Keep exhaust fan grilles clean -- dust buildup can overheat motors and create a fire hazard
All bathroom electrical work must be on GFCI-protected circuits for shock prevention

Code Requirements

Virginia building code requires mechanical ventilation in bathrooms without operable windows
Exhaust fans must be vented to the exterior, not into attics or enclosed spaces
Minimum 50 CFM ventilation is required for standard bathrooms per ASHRAE 62.2
GFCI protection is required for all bathroom circuits including exhaust fan wiring
Our Promise

Why Choose AJ Long Electric for Bathroom Exhaust Fan Installation

AJ Long Electric specializes in bathroom exhaust fan installation throughout Northern Virginia because we understand that proper bathroom ventilation is a home protection issue, not just a comfort upgrade. Moisture is the leading cause of mold growth, paint failure, and structural damage in bathrooms, and an improperly installed or undersized exhaust fan provides a false sense of security. We size every fan based on your bathroom's actual square footage and features -- a bathroom with a steam shower needs a very different fan than a powder room. Every installation includes proper insulated ductwork routed to an exterior termination point with a backdraft damper, because venting into an attic or soffit creates the very moisture problems the fan is supposed to prevent. We correct improper attic venting on hundreds of homes each year across Fairfax, Loudoun, Prince William, and Arlington counties. Our electricians install premium brands including Panasonic WhisperCeiling, Broan-NuTone, and Delta BreezSlim, and we offer combination fan-light-heater units for bathrooms that need supplemental warmth. Every installation includes a humidity-sensing or timer switch option so the fan runs exactly as long as needed without homeowner intervention.

Licensed

Virginia Licensed Electricians

Insured

Fully Bonded & Insured

40+ Years

Serving Northern Virginia

5-Year Warranty

On All Workmanship

Service Areas

Bathroom Exhaust Fan Installation Available Throughout the DMV

We proudly provide bathroom exhaust fan installation services across Northern Virginia, Washington DC, and Maryland. Click on your area to learn more.