Sized Exhaust Fan
We calculate CFM from your bathroom's square footage and add 50 CFM if there is a tub. Most Pocatello bathrooms land between 50 and 110 CFM. You get a unit rated at 1.5 sones or less with a backdraft damper built in.
Bright, code-correct showers with airflow that stops mold cold
Shower Lighting and Ventilation pocatello ID
Shower lighting and ventilation pocatello ID work is what we do every week: recessed lights that survive steam, exhaust fans that actually move air, and vent runs that terminate outside your roof or wall. If your mirror fogs for an hour after every shower, or you spot black speckling along the caulk line, you need a real fix, not a bigger towel. We serve homeowners across Bannock County with same-week scheduling and upfront pricing.
Careful work. Honest options.
About this service
Shower Lighting and Ventilation pocatello ID Explained
Shower lighting and ventilation pocatello ID is a combined electrical and mechanical upgrade that puts moisture-rated light fixtures and a properly sized exhaust fan inside your shower or directly above it. The light has to be rated for wet or damp locations, sealed against steam, and wired to a GFCI circuit. The fan has to pull 1 CFM per square foot of bathroom minimum, run through smooth rigid duct, and exhaust outdoors, never into an attic. We handle both sides so the ceiling gets opened once, not twice.
Pocatello homes deal with a specific problem: cold winters and tight, well-insulated bathrooms. When you run a hot shower in a 20-degree January morning, that steam hits cold tile and cold glass and condenses fast. Without a fan moving 50 to 110 CFM, moisture soaks into grout, backer board, and framing. We see it constantly in older homes near Old Town and the University Area. If you have been searching for shower ventilation to prevent mold pocatello ID, the answer is airflow plus a sealed, insulated duct run, not a dehumidifier.
- ✓ Mold Stops Coming Back
- ✓ Lights Built for Steam
- ✓ Quieter Mornings
- ✓ Lower Winter Bills
What's included
What Our Shower Lighting and Ventilation Service Covers
Every job includes the fan, the duct, the termination, the wiring, the light, the drywall patch, and the cleanup. We do not sub any of it out. If you want a humidity sensor, a timer switch, or a second light, those are simple add-ons we price before we start.
Rigid Duct and Termination
We run 4-inch rigid galvanized duct, sealed at every joint with mastic, to a roof or gable cap with a flapper. No flex hose, no dumping into the attic. The run is insulated where it crosses unconditioned space.
Wet-Rated Lighting
One or more wet-rated, IC-rated LED fixtures set into the ceiling on a layout that lights the shower floor, the niche, and the entry without glare. All wired to GFCI protection per code.
Drywall Patch and Texture
We tape, mud, and texture every opening to match the existing ceiling. If your ceiling is a heavy knockdown or an older hand-troweled finish, we match it. You should not be able to find where we cut.
Airflow Verification
Before we pack up, we test suction at the grille with a smoke pencil and check the exterior damper opens and closes freely. If the reading is off, we find the restriction and fix it on the spot.
Full Cleanup
Drop cloths, a vacuum shroud on the hole saw, and a final sweep. We haul away the old fan, the old light, and every scrap of duct and drywall. Your bathroom is usable the same night.
How it works
Our Shower Fan and Light Installation Process
We ask four questions: bathroom size, ceiling height, current fan model, and whether there is attic access above. That tells us the CFM target, duct route, and whether we need a helper. Most quotes go out the same day, and the number does not change unless you change the scope.
On arrival we pop into the attic first. We check joist direction, insulation depth, and where the existing duct dumps. Roughly a third of Pocatello homes we open have duct terminating into the attic insulation, which is a code violation and the reason the ceiling stains keep coming back.
We cut the ceiling opening with a hole saw, run 4-inch rigid galvanized duct to a roof or gable cap, and pull 12-gauge wire to a GFCI breaker. Rigid duct moves 30 to 40 percent more air than the flex hose most builders used. This stage takes 90 minutes to 3 hours.
The new fan housing gets screwed to a joist, the damper and duct collar get sealed with mastic, and the wet-rated light goes into its IC-rated can. We tape the drywall seam, mud it, and texture to match. You will not see a patch line when we are done.
We run a smoke pencil at the grille to confirm suction, check the exterior damper opens freely, and test the GFCI. Then we walk you through the timer or humidity sensor settings. Total job time for a standard install runs 4 to 6 hours.
STEP 01Phone Walkthrough
We ask four questions: bathroom size, ceiling height, current fan model, and whether there is attic access above. That tells us the CFM target, duct route, and whether we need a helper. Most quotes go out the same day, and the number does not change unless you change the scope.
Tools & methods
Tools and Methods We Use
Hole saw with vacuum shroud
Cuts the ceiling opening for the fan and light while capturing drywall dust at the source, so your bathroom stays clean during the work.
Handheld anemometer
Measures actual CFM at the fan grille. We use it to confirm the install meets spec before we call the job done.
Smoke pencil
Shows the direction and strength of suction at the grille and confirms the exterior damper is pulling, not stuck shut.
Rigid galvanized duct and mastic
Moves 30 to 40 percent more air than flex hose and seals every joint against attic air and moisture.
GFCI tester
Verifies the new light circuit trips correctly under fault conditions, per code, before we hand the bathroom back.
Cordless drill and driver set
Sets the fan housing to the joist, drives the duct collar screws, and mounts the light can without over-torquing.
Real results
Before and after.
Shower Lighting and Ventilation
Alameda Ranch: From Fogged Mirror to Clear Glass
A 1978 ranch with the original 50 CFM fan, flex duct crushed against a joist, and no light inside the shower. The mirror stayed fogged for over an hour, and mold returned along the caulk line every few months.
After: We installed a 110 CFM dampered fan, ran 4-inch rigid duct to a new roof cap, and added two wet-rated recessed lights. Airflow tested at 104 CFM at the grille. The room now clears in about 6 minutes.
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Shower Lighting and Ventilation
Old Town Bungalow: Cold Shower Fixed
A 1928 bungalow with no attic chute and a fan that pulled 20-degree attic air straight into the bathroom. Showers felt drafty, and the heating bill climbed every January.
After: We routed duct out the gable, sealed the collar with mastic, insulated the run, and swapped in a 0.8-sone unit. The bathroom holds heat now, and the fan still pulls 92 CFM.
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Shower Lighting and Ventilation
Sycamore New Build: Code Fix and Humidity Sensor
A 2019 build with a 50 CFM fan in a 110-square-foot bathroom with a tub, which is roughly half the code-required airflow. The mirror fogged, and the paint above the shower started to bubble.
After: We upsized to a 110 CFM unit, replaced the flex duct with rigid, added a humidity sensor switch, and patched the ceiling. The paint stopped bubbling and the room dries on its own.
Book this service → Problems we solve
Shower Ventilation Problems We Fix in Pocatello
Most of the calls we get are one of these four. Each one has a root cause, and each one has a fix that holds up through a Pocatello winter.
Ask a pro →Mold and mildew returning along the caulk line
We test the existing fan's actual airflow, then correct the cause: undersized unit, crushed flex duct, or a run that dumps into the attic. Once the room clears in under 8 minutes, the mold stops returning. We also replace failed caulk and grout while we are in there.
Cold and drafty shower in winter
We install a dampered fan, seal the duct collar with mastic, and insulate the run where it crosses unconditioned attic. The bathroom stays warm, and the fan still moves the CFM it is rated for.
Ceiling stains and dripping above the shower
We open the ceiling, find where the moisture is coming from, and correct the ventilation path. Then we replace the affected drywall, texture to match, and verify airflow before we close it up.
Old fan loud enough to wake the house
We swap in a modern unit rated 1.5 sones or lower and isolate the housing from the joist with rubber mounts. You get the airflow without the noise, so you actually use it every shower.
Transparent pricing
What Shower Lighting and Ventilation Costs
$450 - $1,200 for most combined fan and light installs
Typical 2026 pricing in the Pocatello area runs $450 to $1,200 for a combined fan and light install, and $250 to $600 for a straight fan swap with existing duct. The two biggest variables are attic access and duct route. A short run to an existing gable cap is quick. A new run to a roof cap on a steep pitch takes longer and needs flashing. We quote flat before we cut, and the number does not move unless you change the scope. If you want a ballpark over the phone, we can usually give you one in five minutes.
You are paying for one ceiling cut, one permit, one crew, and a verified airflow reading. Splitting the job between trades usually costs more and leaves the duct work unverified, which is how most of the problems we fix got started.
•affects cost
Easy attic access with a walkable deck keeps labor down. A low, tight attic with blown-in insulation and no decking adds time and sometimes a second visit.
Get a quote ↗•affects cost
Reusing an existing gable cap is the cheapest route. A new roof cap on a steep pitch requires flashing and adds cost. Longer runs need more rigid duct and more support.
Get a quote ↗•affects cost
One wet-rated recessed light is standard. Two or three, or a niche light, adds fixture cost and wiring time. We price each one separately so you can choose.
Get a quote ↗•affects cost
If there is a spare GFCI circuit nearby, we tie in. If we have to pull a new run from the panel, that adds labor and possibly a breaker. We check this during the quote.
Get a quote ↗ Proof you can check
Licensed, Insured, and Verified
- State-Licensed Contractor · Idaho Division of Occupational and Professional Licenses
- Electrical and Mechanical Scope · Idaho Building Codes, ICC-referenced
- EPA WaterSense-Aware Sizing · U.S. Environmental Protection Agency
- OSHA Safety Compliance · Occupational Safety and Health Administration
- Manufacturer-Trained Installer · Panasonic and Broan-NuTone ventilation products
Most residential jobs run $450 to $1,200 in 2026, depending on attic access, duct length, and whether we are adding a light on the same visit. A straight swap with existing duct lands near the low end. A new run to a roof cap with a wet-rated light and drywall patch sits at the top. We quote flat before we start.
Pocatello winters push bathroom humidity past 80 percent for hours after a shower, and that moisture has nowhere to go in a tight, well-insulated house. It condenses on cold tile, soaks into grout and backer board, and feeds mold behind the wall. A correctly sized fan clears the room in under 8 minutes and keeps the framing dry.
A single wet-rated recessed light takes 2 to 3 hours including the drywall patch and texture. Adding a fan on the same visit pushes the total to 4 to 6 hours. If we have to run a new duct to a roof cap or pull a new circuit from the panel, plan on a full day. We give you the window when we book.
We do, and we handle the whole scope: fan, duct, termination, wiring, and drywall. That matters because most problems we fix were caused by splitting the job between an electrician and a handyman. One crew, one permit, one warranty. Call us and we will size the fan for your bathroom over the phone.
Ready when you are
Get Your Shower Lighting and Ventilation pocatello ID Quote
One call gets you a flat number, a scheduling window, and a plan for the duct run. We are licensed, insured, and we warranty our work. Call now and we will size the fan for your bathroom over the phone.
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Request an appointment
get your free shower estimate
Call us at +1 986-336-9120 or email info@showerproinstallation.com and we'll set up a free on-site measure. We answer the phone Monday through Friday, 8:00 to 18:00, and we return every message the same business day. For a leaking shower or a valve that's spraying, call any time - we run emergency call-outs 24/7.
Call anytime+19863369120Email the officeinfo@walkinshowerinstallationpocatelloid.com
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