Exhaust Fan Repair and Installation in Guelph
Exhaust Fan Repair and Installation in Guelph is the service that keeps the rooftop fan on a commercial kitchen exhaust system turning and safe to open. The fan is the only powered part in the grease path, and it sits out of sight on a plaza roof off Woodlawn Road or above a church hall in Fergus until it squeals, sheds belt dust or stops. Guelph Hood Cleaning inspects the fan on its curb, quotes a repair or a replacement per job, fits hinge kits so the housing can be opened for cleaning, and installs grease containment to protect the roof membrane. Written quotes come back within 24 hours.
Where to find kitchen exhaust fan repair near me in Guelph: the four parts that fail
Guelph Hood Cleaning repairs and replaces rooftop kitchen exhaust fans across Guelph and Wellington County, and nearly every call traces back to one of four parts.
The drive belt. A belt-driven upblast fan wears its belt before anything else. A stretched or glazed belt slips on the pulleys, the wheel turns slower than the motor, and the hood loses its draw while the fan still sounds like it is running. A ring of fine black dust on the curb is the tell.
The shaft bearings. Sealed bearings lose their grease over years of heat. A dry bearing announces itself as a squeal at start-up on a cold morning. Left alone it seizes, and a seized shaft stalls the motor and burns it out.
The motor. Motors fail from heat and from grease. On an older fan the motor sits inside the airstream, in the same vapour the duct carries, and its windings cook a little every service.
The curb and its fasteners. Vibration from an out-of-balance wheel works the lag bolts loose, and a loose fan walks on the roof. Grease packed on one side of the wheel is the usual cause of the imbalance.
Repair vs replace in Guelph: the question the rooftop inspection answers
The inspection settles one thing first: whether the housing, the shaft and the curb are still sound. A sound housing on a sound curb gets repaired. A rusted housing or a rotten curb gets replaced, because a repair on either one is money spent twice.
| What the inspection finds | Repair vs replace | The work on the quote |
|---|---|---|
| Belt dust on the curb, wheel spins freely by hand | Repair | New belt, pulleys checked for glazing, tension set on the same visit. |
| Squeal at start-up, play in the shaft | Repair | Bearings pressed off and replaced, wheel degreased and balanced. |
| Motor will not start, windings smell burnt | Repair or replace | Motor replaced where the housing and wheel are sound. Whole fan where the housing has rusted. |
| Housing rusted through at the base, wheel cracked | Replace | New upblast fan matched to the hood airflow, set on the existing curb. |
| Curb rotten, lag bolts pulling out of the deck | Replace fan and curb | Fan and curb together, with a roofer for the membrane tie-in. |
Exhaust fan hinge kit installation in Guelph: why a bolted fan gets skipped
A hinge kit is a hinged base with a restraint cable that lets the fan tip back on its curb without disconnecting the power. It matters because of what happens to a fan without one.
A fan bolted flat to its curb has to be unwired, unbolted and lifted clear before anyone can reach the wheel or the inside of the housing. On a Stone Road plaza roof at three in the morning in February, that lift is the step that does not happen. The outside of the fan gets wiped, the inside stays coated, and the fan becomes the greasiest point in the whole system while the paperwork says the system was cleaned.
Guelph Hood Cleaning fits the kit during a scheduled cleaning visit, because the crew is already on the roof. The inspection measures the fan base and checks which way the fan has room to swing, since older fans above Wyndham Street and Macdonell Street kitchens are not always on a standard curb size.
The canopy and filters are covered on the hood cleaning services page. The duct between the hood and the fan is covered on the kitchen exhaust cleaning page.
Rooftop grease containment in Guelph: the membrane, the landlord and the plaza manager
The drain at the base of the fan housing has to empty somewhere. Without containment, it empties onto the roof.
Rooftop grease containment is a tray or collar fitted at the fan drain and filled with an absorbent pad, so the grease that condenses inside the housing is caught before it runs onto the roof. Grease softens the single-ply membrane on most plaza and plant roofs, and a dark stain spreading out from the curb is how a leak directly above the cook line begins.
On a leased unit along Speedvale Avenue or Clair Road, the roof belongs to the landlord and the fan belongs to the tenant. A roofer who photographs a grease-softened membrane sends the repair bill to the kitchen below it, and a roof warranty can be voided on the same photograph. A containment unit with its pad changed and photographed at every cleaning visit is the tenant's record that the drain was managed. A plant kitchen in the Hanlon Creek Business Park carries the same exposure, with a facilities manager in place of a landlord.
Best exhaust fan installation in Guelph for a new cooking line
Exhaust fan installation starts from the hood, not from whatever fan was on the roof before.
A hood is designed to move a set volume of air, and the fan has to move that volume against the length of duct between them. Too little fan and smoke rolls out from under the canopy. Too much and the fan pulls heated dining-room air up the duct all winter.
Guelph Hood Cleaning installs the fan on a new curb or an existing one, and fits the hinge kit and the containment on the same visit so the fan is cleanable from its first day. The usual cases in Guelph are a pizzeria adding a second line downtown, a brewery in Elora putting in a kitchen, and a campus or plant cafeteria replacing a fan that was never sized for its hood. A wood-fired oven changes the arithmetic, because solid-fuel cooking sits on a monthly inspection interval and the fan gets opened every month. The intervals are on the NFPA 96 guide.
A fan that has stopped is booked as an urgent call, because a line with no exhaust cannot cook.
How much does exhaust fan repair cost in Guelph in 2026?
Exhaust fan repair, replacement, hinge kits and rooftop grease containment in Guelph are quoted per job after an inspection or walk-through, and the written quote comes back within 24 hours with every part named. For context, a scheduled hood cleaning visit starts from $585 per visit for a single-hood kitchen up to ten feet and from $995 per visit for a multi-hood kitchen of two to four canopies.
The price moves with fan size, belt drive or direct drive, the state of the curb, and whether a roofer is needed for the membrane. Proof of WSIB coverage and liability insurance arrives before work starts. The full list is on the services page, and the kitchens this applies to are on the who we serve page.
Next step: call 226-641-5901 or request a written quote. A photograph of the fan on its curb is enough to identify the drive type and the hinge kit that fits.
Exhaust fan repair in Guelph: frequently asked questions
Can a kitchen keep cooking while the rooftop fan is down?
A cooking line with no working exhaust fan has no capture at the hood, so smoke and grease vapour spread through the kitchen and the dining room. That is why a fan that has stopped is booked as an urgent call rather than a scheduled one.
Who pays for a rooftop fan repair in a leased Guelph plaza unit?
The lease decides. A typical plaza lease puts the fan with the tenant and the curb and roof membrane with the landlord, and the written quote separates the two so each party can approve its own line.
Does a replacement exhaust fan need to match the old one?
A replacement fan has to match the airflow the hood was designed for and the curb it sits on, not the brand or the size of the old unit. An undersized original is replaced with a fan sized to the hood.
What does an exhaust fan hinge kit do?
A hinge kit lets the fan tip back on its curb with the wiring still connected, so the wheel and the inside of the housing are reachable at every cleaning. A bolted fan has to be unwired and lifted off, which is the step most often skipped on a cold roof at night.
Can hinge kits and grease containment be fitted on a scheduled cleaning night?
Hinge kits and rooftop grease containment are normally fitted during a scheduled cleaning visit, because the crew is already on the roof with the fan open. The item most likely to delay it is the landlord's written approval for work on the curb.