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Rooftop Unit (RTU) Repair & Replacement · Burlington, OntarioRooftop Unit (RTU) Repair in Burlington
Rooftop unit (RTU) repair in Burlington is usually one of six faults: a belt or bearing, a contactor or capacitor, a condenser fan motor, an igniter or flame sensor, a blocked condensate pan, or a stuck economizer. All six are repairs. Replacement enters the conversation when a unit past 15 years needs a compressor or a heat exchanger, or when the cabinet base has rusted through.
RTU faults on Burlington roofs: what fails, which brands we service and when to replace
A rooftop unit puts the furnace, the air conditioner, the blower and the fresh-air damper in one cabinet, so the symptom in the space tells us where to start on the roof. No heat with the unit locked out is ignition: an igniter, a flame sensor, a pressure switch or a failed inducer. No cooling with the fan running is a contactor, a capacitor, a condenser fan motor or a refrigerant leak. A squeal at start-up is a belt, a rumble is a blower bearing, and water on a ceiling tile is nearly always the condensate pan or trap, not the roof membrane.
Burlington roofs add two things to that list. The first is exposure: units on plazas and industrial buildings near the QEW collect road salt and grit in the condenser coil and rust at the cabinet seams, and wind off Lake Ontario works on loose panels and hail guards. The second is the economizer, because spring and fall days cooled by the lake are when outdoor air can do the cooling for free. A seized damper or a dead actuator throws that away and burns gas when it sticks open in January, which is why we check damper position on every visit.
Brand matters less than people expect, because packaged units share most of their parts. We service York, Carrier, Trane, Lennox, Daikin and Goodman rooftop units, and Hisense units we have installed ourselves. Heil comes from the same manufacturer as KeepRite, and Ruud is Rheem's sister brand, so their controls and parts are familiar to anyone who works on those lines. What we need from you is the model and serial number off the nameplate, which fixes the tonnage, the voltage, the refrigerant and the year.
Can it wait? A unit that is short on cooling can run until the visit, but one that trips its breaker, smells of burning or keeps locking out on a flame fault should be switched off at the rooftop disconnect and left off. Gas work is done by TSSA-licensed technicians and refrigerant work by ODP card holders, and you get a written report with photos and a price before any part is ordered. If the answer is replacement, the quote includes the curb adapter, the crane and disposal; see the rooftop unit service page, the wider commercial HVAC in Burlington page, or book a roof visit.
Why ZK Mechanical for rooftop unit (rtu) repair & replacement in Burlington
- Burlington shop at 4145 North Service Road, beside the QEW and close to the roofs we work on
- York, Carrier, Trane, Lennox, Daikin, Goodman, Heil, Ruud and Hisense rooftop units serviced
- Economizer damper position and actuator checked on every visit, because a stuck one never generates a complaint
- TSSA-licensed gas technicians for the heating section; ODP-certified refrigerant handling for the cooling side
- Written report with nameplate data and photos before any part is ordered
- Replacement quotes that include the curb adapter, crane and disposal in one number
- Evening, weekend and holiday work at the weekday rate
Licensed technicians, Burlington dispatch, no overtime charges.
Rooftop Unit (RTU) Repair & Replacement in Burlington — FAQs
Which rooftop unit brands do you repair in Burlington?
York, Carrier, Trane, Lennox, Daikin, Goodman, Rheem and Ruud, KeepRite and Heil, and Hisense. We are an independent contractor and not tied to one manufacturer's catalogue, so the advice on repair versus replacement is the same whatever badge is on the cabinet. The York rooftop unit page is an example of the brand-specific faults we see; send the nameplate photo and we will confirm parts availability.
What does rooftop unit repair cost in Burlington?
There is no flat price, and we do not guess one over the phone. The cost is driven by the part, the tonnage, roof access and whether a lift or a second technician is needed; a contactor on a 5-ton unit and a compressor on a 10-ton unit are different jobs. You get a written price after the roof visit. For replacement budgets, see what a commercial rooftop unit costs.
Why is my rooftop unit running the heat all day in winter?
Check the economizer first. If the outdoor-air damper is stuck open, the unit pulls in freezing air and the gas section runs constantly to keep up, so the space feels fine and the gas bill does not. The usual cause is a failed actuator or a seized linkage, and salt and grit near the QEW speed up both. RTU economizer repair explains the fix.
Is it safe to keep resetting an RTU that keeps tripping?
No. A unit that trips its breaker or locks out on a flame fault again and again should be switched off at the rooftop disconnect and left off until it is checked. Repeated resets on a failing compressor or a cracked heat exchanger make the damage worse. If anyone smells gas, leave the area and call Enbridge Gas from outside before calling us.
Do you install rooftop units in Burlington as well as repair them?
Yes. A replacement means measuring the existing curb, ordering a unit matched to the building's voltage and gas supply, fabricating a curb adapter where the footprints differ, and booking a crane for a morning the tenant chooses. Gas and electrical are reconnected by licensed trades and the unit is commissioned before we leave the roof. Whether the City of Burlington Building Department needs a permit depends on the scope, and the quote says so.
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Rooftop Unit (RTU) Repair & Replacement in Burlington — fast.
Emergency repair or planned upgrade, quoted in writing before any work starts.