# Emergency RTU Repair Toronto | Rooftop Units Toronto Pros

> Emergency rooftop unit repair Toronto, 24/7. On-roof 2-4 hrs GTA core, 30-min dispatch. Restaurant, retail, dental + medical priority. Red Seal crew.

URL: https://rooftopunitstoronto.ca/emergency-rooftop-unit-repair-toronto/

![Commercial rooftop unit with an open panel under work lights at dusk in Toronto](/images/misc/service-van-headlights-and-a-commercial-rooftop-un.webp)

24/7 | 2-4 Hr On-Roof GTA Core

# 24/7 Emergency Rooftop Unit Repair, On the Roof in 2-4 Hours

Last updated: October 24, 2026

No-cool, no-heat and tripped-breaker calls answered by a Red Seal tech, not a call-centre ticket.

-   No cooling
-   No heat
-   Tripped breakers
-   Unit will not start
-   Burning smell
-   Water leaking from unit

Book a Site Assessment

[/contact/ →](/contact/)

 

View Pricing

[#pricing →](#pricing)

24-Hour Written Quote

From $425 after-hours / weekend call

-   Parts, labour, crane, permit + HST on one line
-   2-4 hr on-roof emergency response, GTA core
-   Save on Energy rebate filed on qualifying work

Red Seal HVAC-RTSSA G1 + G2ESA + CRE$5M + WSIB

24/7 Dispatch (437) TBD

[tel:+14370000000 →](tel:+14370000000)

-   24-Hour Written Quote (not a sales pitch)
-   24/7 Emergency RTU Dispatch (2-4 hr on-roof GTA core)
-   Red Seal HVAC-R + TSSA + ESA + CRE Chiller
-   $5M Liability + WSIB + COI in 24 Hours
-   Save on Energy Rebate Filed on Your Behalf

1,800+

GTA installs

97%

Uptime

2-4 hr

On-roof, GTA core

48

Sites under contract

Symptoms first

## Is Your Equipment Showing These Signs?

No cooling on a 32C Saturday, no heat at 6am before opening, a breaker that keeps tripping: dispatch within 30 minutes and a tech on the roof in 2-4 hours across the GTA core. If the unit cannot be restored same day, we set up temporary cooling or heating. Restaurants, retail, dental and medical sites get priority.

-   No cooling
-   No heat
-   Tripped breakers
-   Unit will not start
-   Burning smell
-   Water leaking from unit

Seeing one of these? 

Book a site assessment

[/contact/ →](/contact/)

 or call dispatch for a 2-4 hour on-roof visit in the GTA core.

## When Is a Rooftop Unit Failure an Emergency?

Emergency rooftop unit repair is for the calls that cannot wait until Monday. No cooling on a 32C Saturday in a restaurant. No heat at 6am in a dental clinic with a full schedule. A breaker that keeps tripping in a retail store. Water pouring from a unit into a tenant's ceiling. A burning smell from the roof.

Each of those costs real money by the hour: spoiled food, cancelled patients, closed stores, angry tenants. Our emergency service exists so you are not waiting on a call centre to book you for later in the week.

## What Happens When You Call

A person answers dispatch, 24/7. We confirm the building, how many units are down, what the symptoms are and how the tech gets on the roof. A Red Seal HVAC-R tech is assigned within a 30-minute window and is on the roof in 2-4 hours across the GTA core.

On site, the tech follows **lockout tagout**, makes the unit safe and works through electrical, gas, refrigerant and controls in order. Gas sections with a cracked heat exchanger or failed safety are locked out until repaired. Our leads hold TSSA G1 and G2 gas and ESA electrical tickets, so one tech can work the whole cabinet.

> **Do not keep resetting the breaker**
> 
> A breaker that trips again and again is protecting a shorted compressor, seized motor or wiring fault. Each reset risks turning a contactor or motor repair into a $2,400-$5,600 compressor.

## The Most Common Emergency RTU Failures

### No cooling

Failed capacitors and contactors, seized condenser fan motors, tripped **high-pressure switches** from dirty coils, low charge from a leak, or a compressor that will not start. Most are fixed with parts from the van.

### No heat

On gas-fired RTUs, winter calls are usually the **flame sensor**, **igniter**, inducer motor, pressure switch or gas valve. Our TSSA techs test combustion and inspect the heat exchanger before restarting.

### Tripped breakers and burning smells

Usually a shorted compressor, seized fan motor or burnt wiring. These are fixed only after the electrical fault is found, never by resetting and walking away.

### Water leaking from the unit

Blocked condensate drains, iced evaporator coils thawing, or failed roof curb flashing. The leak is stopped first, then the cause is fixed.

## Temporary Cooling and Heating

When a unit needs a part that is not on the van, such as a compressor or coil, we set up **temporary cooling** or **temporary heating** so the space stays open. Server rooms, clinics and kitchens get this first. Most compressors are sourced same or next day from GTA distributor stock.

## How Much Does Emergency RTU Repair Cost?

| Item | Price | Timing |
| --- | --- | --- |
| After-hours / weekend call-out | $425-$650 | 2-4 hr on-roof |
| Labour after-hours | $280/hr |  |
| Labour weekend | $425/hr |  |
| Compressor repair / replace | $2,400-$5,600 | 1-2 days |
| Refrigerant leak + recharge | $850-$2,800 | Same-next day |

You see the tally before work starts, even at 2am. For non-urgent problems, a business-hours 

commercial rooftop unit repair

[/commercial-rooftop-unit-repair-toronto/ →](/commercial-rooftop-unit-repair-toronto/)

 visit costs less.

## Who Gets Priority

Restaurants, retail, dental and medical sites go to the front of the queue. Sites on a 

maintenance contract

[/commercial-rooftop-unit-maintenance-toronto/ →](/commercial-rooftop-unit-maintenance-toronto/)

 also get priority dispatch and locked labour rates. Kitchens with backdrafting hoods often have a make-up air problem as well; see 

make-up air unit service

[/make-up-air-unit-toronto/ →](/make-up-air-unit-toronto/)

.

## Preventing the Next Emergency

Most emergency calls trace back to something a quarterly visit would have caught: a bulging capacitor, a frayed belt, a dirty condenser coil or a weak flame sensor. After an emergency, the written report lists what else on the unit is close to failing, so you can fix it on your schedule instead of the unit's. We cover 

commercial rooftop units

[/ →](/)

 across the whole GTA core, from 

Downtown Toronto

[/service-areas/toronto/ →](/service-areas/toronto/)

 to Markham and Mississauga.

Published pricing

## How Much Does Emergency RTU Cost in Toronto?

Ranges from recent GTA jobs. Your written quote lands within 24 hours with parts, labour, crane, permit and HST on one line, and rebate-net pricing where the work qualifies.

After-hours $280/hr, weekend $425/hr. Business-hours diagnostic $275-$425.

25/50/25 payment on installs: 25% at order, 50% on install day, 25% on commissioning sign-off. Net-30 for commercial and PM accounts. 

See all pricing

[/pricing/ →](/pricing/)

.

### Emergency RTU pricing

CAD + HST

| Service | Price | Timeline |
| --- | --- | --- |
| RTU after-hours / weekend call | $425-$650 | 2-4 hr |
| Compressor repair / replace | $2,400-$5,600 | 1-2 days |
| Refrigerant leak + recharge | $850-$2,800 | Same-next day |
| Economizer + controls diag | $450-$900 | Same day |

Free tools

## Try Our Free Commercial HVAC Service Finder

Two minutes, no email required. Results show on screen first.

### Commercial HVAC Service Finder

Answer five short questions to find out whether you need emergency repair, replacement, maintenance or central plant service.

Take the quiz

[Commercial HVAC Service Finder →](/tools/hvac-service-finder/)

Case study | King West, Toronto | King Street West

## King West plaza: 3 RTUs down over a February long weekend

Three RTUs at a King West retail plaza failed over a February long weekend, leaving tenants with no heat. Dispatch had a tech on the roof that Saturday morning. The first unit was heating by Saturday noon, a written diagnostic went to the PM the same day, and all three units were running before tenants opened Monday.

Equipment

3 packaged RTUs

Size

3 units, retail plaza

Turnaround

First unit by Saturday noon, all 3 before Monday

Price

After-hours rates, written same day

Why property teams pick us

## Why Choose Rooftop Units Toronto Pros for Emergency RTU?

### A tech, not a ticket

Calls go to dispatch and a Red Seal tech, not a call centre that books you for Tuesday.

### 2-4 hours on the roof

Across Downtown Toronto, North York, Etobicoke, Scarborough, Mississauga, Markham and Vaughan, with a 30-minute dispatch window.

### Priority for critical sites

Restaurants, retail, dental and medical clinics go to the front of the queue because a lost day costs them most.

### Parts on the van

Contactors, capacitors, motors, igniters, flame sensors and boards for Lennox, Carrier, York, Trane and Daikin.

### Temporary cooling or heat

When a unit cannot be restored same day, we set up temporary equipment so tenants stay open.

### Rates on paper

After-hours $280/hr, weekend $425/hr, shown on the tally before work starts. No surprise holiday surcharge.

What to expect

## How Does Our Emergency RTU Work?

1.  01
    
    ### Call dispatch 24/7
    
    A person answers. We confirm the building, number of units down, symptoms and roof access.
    
2.  02
    
    ### 30-minute dispatch
    
    A Red Seal tech is assigned within 30 minutes and is on the roof in 2-4 hours across the GTA core.
    
3.  03
    
    ### Diagnose + make safe
    
    Lockout tagout, electrical and gas checks, then the fault is found. Unsafe gas sections are locked out until fixed.
    
4.  04
    
    ### Fix or bridge
    
    Most faults are fixed with van stock. If a compressor or coil is needed, temporary cooling or heat keeps you open.
    
5.  05
    
    ### Written report
    
    Same-day written diagnostic with readings, parts and next steps, ready for your work order.
    

Field photos

## Our Emergency RTU Work

Recent GTA rooftops and mechanical rooms. Click any photo to enlarge.

### Before + After

![Seized condenser fan motor and scorched wiring in an RTU](/images/cards/seized-condenser-fan-motor-and-scorched-wiring-ins.webp)

Before

![RTU running with a new condenser fan motor after an emergency repair](/images/cards/same-rooftop-unit-running-with-a-new-condenser-fan.webp)

After

King West retail plaza: 3 RTUs down over a February long weekend, all three running before Monday open.

Client Records

## What Clients Say About Our Emergency RTU

> "Our King West retail plaza had three RTUs down over a long weekend. First unit cooling by Saturday noon, all three up before Monday open. Written diagnostic same day."

PSPriya S.PM, King West retail

> "Our Liberty Village kitchen had backdrafting hoods and a dead RTU in July. They fixed the MUA and the rooftop unit in one visit for $1,840, with the tally written before they started."

DRDaniel R.Restaurant owner, Liberty Village

> "No heat at 6am with a full patient list. A tech was on the roof before 9 and the flame sensor was replaced before our first appointment ran late."

DSDr. Sam W.Dental clinic, Leaside

> "Breaker kept tripping on a 33C Saturday. They found a seized condenser fan motor, had one on the van and we were cooling by mid-afternoon."

TMTeresa M.Store manager, Markham

> "When the compressor could not be replaced the same day they brought portable cooling for our server room. The new compressor went in the next morning."

ABAlex B.Facility manager, Etobicoke

## RTU offline or chiller alarm?

Red Seal tech on the roof in 2-4 hrs across the GTA core. Call (437) TBD.

(437) TBD

[tel:+14370000000 →](tel:+14370000000)

 

Emergency Service

[/emergency-rooftop-unit-repair-toronto/ →](/emergency-rooftop-unit-repair-toronto/)

Buyer questions

## Emergency RTU FAQs

Still have a question?

A Red Seal lead answers, not a call centre. Written quote within 24 hours.

Book a Site Assessment

[/contact/ →](/contact/)

(437) TBD

[tel:+14370000000 →](tel:+14370000000)

### What's included in your 24/7 emergency rooftop unit response?

A dispatched tech on-roof within 2-4 hours in the GTA core. Diagnostic, parts check, and temp-cooling or temp-heating setup if the unit cannot be restored same-day. After-hours rate $280-$425/hr. Restaurant, retail, dental and medical sites get a priority queue. You also get a same-day written diagnostic for your work order.

### How much does an emergency RTU call cost?

After-hours and weekend call-outs run $425-$650, with labour at $280/hr after-hours and $425/hr on weekends. Parts are extra and are listed on the tally before work starts. Business-hours diagnostics are $275-$425.

### How fast can you get to my building?

Dispatch works inside a 30-minute window, and a tech is on the roof in 2-4 hours across the GTA core: Downtown Toronto, North York, Etobicoke, Scarborough, Mississauga, Markham and Vaughan. Brampton and Oakville emergencies dispatch from the core, and we give you a realistic arrival time when you call.

### What if my unit cannot be fixed the same day?

If a compressor, coil or heat exchanger has to be sourced, we set up temporary cooling or temporary heating so you can stay open. Most compressors are sourced same or next day from GTA stock.

### Which sites get priority?

Restaurants, retail, dental and medical clinics, because a lost day hurts them most. Contract maintenance customers also get priority dispatch.

### What should I do before the tech arrives?

Do not keep resetting a breaker that trips; that can damage the compressor. If you smell gas or burning, shut the unit off at the thermostat and disconnect if it is safe, and call. Make sure someone can give roof access.

### Do you carry parts for my brand?

Our vans carry OEM contactors, capacitors, fan motors, igniters, flame sensors and common boards for Lennox, Carrier, York, Trane and Daikin, which covers most first-visit fixes.

### Is a tripped breaker on an RTU dangerous?

It is a warning. A breaker that trips repeatedly usually means a shorted compressor, a seized motor or a wiring fault. Resetting it again and again can turn a $500 repair into a $5,000 compressor.

### Can you help on a long weekend or holiday?

Yes. Dispatch runs 24/7, including long weekends. Our King West plaza restore happened over a February long weekend, with all three units running before Monday.

### Do you provide a report for insurance or the landlord?

Yes. Every emergency call ends with a written diagnostic listing the fault, readings, parts, labour and recommendations, plus photos when useful.

Keep the whole roof covered

## Related Services

 

![Open packaged rooftop unit compressor compartment on a Toronto commercial roof during a repair](/images/misc/red-seal-technician-tools-laid-beside-an-open-pack.webp) From $275

[/commercial-rooftop-unit-repair-toronto/ →](/commercial-rooftop-unit-repair-toronto/)

### 

Commercial Rooftop Unit Repair

[/commercial-rooftop-unit-repair-toronto/ →](/commercial-rooftop-unit-repair-toronto/)

Red Seal diagnostics for packaged RTUs: compressors, refrigerant, economizers, controls. Written tally before work starts.

Details + pricing

[/commercial-rooftop-unit-repair-toronto/ →](/commercial-rooftop-unit-repair-toronto/)

 

![Open commercial rooftop unit with clean coil and new filters during quarterly maintenance](/images/misc/clean-condenser-coil-and-fresh-merv-13-filters-in-.webp) From $240

[/commercial-rooftop-unit-maintenance-toronto/ →](/commercial-rooftop-unit-maintenance-toronto/)

### 

Commercial Rooftop Unit Maintenance

[/commercial-rooftop-unit-maintenance-toronto/ →](/commercial-rooftop-unit-maintenance-toronto/)

Quarterly RTU inspections with written reports, locked per-unit pricing and priority dispatch.

Details + pricing

[/commercial-rooftop-unit-maintenance-toronto/ →](/commercial-rooftop-unit-maintenance-toronto/)

![Direct-fired make-up air unit beside a kitchen exhaust fan on a Toronto restaurant roof](/images/misc/direct-fired-make-up-air-unit-beside-a-kitchen-exh.webp)

[/make-up-air-unit-toronto/ →](/make-up-air-unit-toronto/)

### 

Make-Up Air Unit Service

[/make-up-air-unit-toronto/ →](/make-up-air-unit-toronto/)

Direct and indirect fired MUA repair, replacement and balancing for restaurants and parking garages.

Details + pricing

[/make-up-air-unit-toronto/ →](/make-up-air-unit-toronto/)

## Don't See Your GTA City?

Coverage from Toronto to Pearson, Mississauga to Markham. Call 

(437) TBD

[tel:+14370000000 →](tel:+14370000000)

 for a 24-hour written quote.

All Service Areas

[/service-areas/ →](/service-areas/)

 

Get a Written Quote

[/contact/ →](/contact/)

![Packaged rooftop units on a Toronto commercial roof at dusk](/images/misc/toronto-commercial-rooftop-at-dusk-with-a-row-of-p.webp)

24/7 dispatch | 2-4 hr on-roof GTA core

## Ready to Book Emergency RTU?

Site assessment, then a written quote within 24 hours. Parts, labour, crane, permit and HST on one line.

Book a Site Assessment

[/contact/ →](/contact/)

 

Call (437) TBD

[tel:+14370000000 →](tel:+14370000000)

-   24-hour written quote
-   Save on Energy filed for you
-   Red Seal + TSSA + ESA + CRE
-   $5M liability + WSIB