Exhaust Fan Hinge Installation in Markham
An exhaust fan hinge kit is a hinged mounting fitted between a rooftop kitchen exhaust fan and the curb it sits on, so the fan tips up for service instead of being unbolted and lifted off. Markham Hood Cleaning fits hinge kits with a wind restraint, because a fan hinged without one can be caught open by a gust. The point of the kit is simple: a fan that opens in seconds gets cleaned, and a fan that takes two people and a set of wrenches gets skipped.
Why bolted fans quietly go uncleaned
A rooftop upblast fan bolts to a curb, and the parts that matter are underneath it. The inside of the housing, the blower wheel, and the duct opening below all carry grease, and none of them can be reached without lifting the fan off. On a bolted unit that means breaking the electrical connection, undoing fasteners that have weathered for years, and manoeuvring an awkward, heavy assembly on a flat roof.
The realistic outcome is that it does not happen. The fan gets wiped on the outside, the certificate says the system was cleaned, and the wheel keeps loading. Nobody lies about it exactly. The scope just quietly narrows to what can be done in the time allowed.
The consequences are measurable. A coated blower wheel is an unbalanced blower wheel, which moves less air, vibrates, and wears its bearings early. Less air means less capture at the hood, which puts grease into the kitchen instead of up the duct. And the fan housing is the point where the whole system's grease is most concentrated, sitting directly above the duct opening.
Hinged fan vs bolted fan over a service life
The kit pays for itself in labour before it pays for itself in anything else.
| At each service visit | Hinged fan | Bolted fan |
|---|---|---|
| Opening the unit | Isolate power, release the catch, tip it back, set the restraint. | Isolate power, break the connection, undo weathered fasteners, lift clear. |
| Crew required | One technician can do it safely. | Two, on a roof, with a heavy awkward assembly. |
| Risk to the roof | The fan never leaves the curb. | Fan gets set down on the membrane, grease and all. |
| Blower wheel and housing | Cleaned every visit as routine. | Frequently skipped, and the certificate rarely says so. |
| Wiring | Stays connected, so nothing gets re-terminated repeatedly. | Disconnected and remade each time, which is where faults start. |
Ask any contractor whether they lifted your fan last visit. If the answer is vague, this is the fix.
Where to find a hinge kit that fits an older Markham fan
Kits are made in standard patterns, and older rooftop units are not always standard.
The assessment records the fan make and model where a plate survives, the curb dimensions, the base flange pattern, and the direction there is room to swing. Direction matters more than people expect. A fan crowded against a parapet or a neighbouring condenser can only open one way, and hinging it toward the obstruction produces a kit nobody can use.
Weathered fasteners are the other common obstacle. On a fan that has sat bolted for a decade the base fixings often shear rather than release, so the quote allows for replacing them rather than pretending they will come out cleanly. Where a curb has corroded to the point that fixing into it is unsound, that gets reported instead of fitted, because a hinge kit anchored into failing metal is worse than no kit.
Wind restraint is fitted as standard, not as an option. An upblast fan tipped open presents a large surface to the wind, and a gust on an unrestrained fan can damage the hinge, the curb, or the technician. The restraint holds it at the service position. Containment fitted on the same fan is covered on the rooftop grease containment page.
How much does exhaust fan hinge installation cost in Markham in 2026?
Markham Hood Cleaning quotes hinge kit supply and installation per fan after a free roof assessment, and fits it during a scheduled hood cleaning visit, which starts at $385 per visit, so no separate roof call-out is charged.
Cost turns on fan size, the state of the existing fixings, and whether the electrical connection needs any attention while the unit is off. It is a one-time fitting. Every visit afterwards is cheaper and more complete, because the housing and wheel move from a job nobody wants to a job that takes minutes.
For a building with several kitchens, quoting all the fans together is usually the sensible route, since the roof assessment and the access arrangements are shared. Markham Hood Cleaning can issue that as one quote to the property manager.
Next step: call 289-806-9117 or request a written quote. A photograph of the fan on its curb, taken from a few steps back, is usually enough to identify the kit.
Exhaust fan hinges in Markham: frequently asked questions
Is a hinge kit required by code?
The standard requires that the exhaust system be cleaned to bare metal where grease has accumulated, which includes the fan housing and the blower wheel. It does not name a hinge kit as the way to achieve that. In practice a hinge kit is how the requirement gets met reliably, because it removes the reason the fan gets left alone. The requirements themselves are set out on the NFPA 96 page.
Can a hinge kit be fitted to any rooftop fan?
Most, but not all. It needs a sound curb to fix into, a standard or identifiable base pattern, and clear space on at least one side for the fan to swing into. Markham Hood Cleaning assesses all three before quoting and will say plainly if a unit cannot take one, rather than fitting something that is not properly anchored.
Does fitting a hinge kit need the landlord's approval?
Usually yes, because it involves work on a rooftop structure the tenant does not own. The quote is written so it can be passed to a property manager, listing what is being fixed into the curb and what is being replaced. That approval is the step that most often delays this job, so it is worth starting early.
Will opening the fan affect the roof warranty?
Fitting the kit involves the curb rather than the membrane, but roof warranties vary and some are strict about any rooftop work. The building should confirm with its roofing contractor before the job is booked. Markham Hood Cleaning photographs the roof around the curb before and after, which is the record that settles most later questions.
How do I tell if my fan has ever actually been opened?
Look at the base fasteners on a bolted fan. Untouched weathering and undisturbed sealant around the flange mean the unit has not come off. On a hinged fan, ask for a before-and-after photograph of the blower wheel. Markham Hood Cleaning provides one on every visit as part of the standard photo record.