Rooftop unit repair
No cooling, no heat, loud operation, short cycling, failed motors, belt issues, control faults, thermostat problems, and economizer trouble.
Small-commercial RTU service across Toronto, Niagara, and cottage-country corridors
Rooftop unit repair and replacement without the big-contractor runaround.
Fast help for restaurants, retail plazas, offices, clinics, schools, libraries, shops, and small warehouses running packaged rooftop HVAC units.
Quote within 24 hours
After the RTU and roof access are assessed.
Small commercial focus
One RTU, a few RTUs, or maintenance for a local building.
HR Mechanical backed
Service is provided by HR Heat & Cool Mechanical Inc.
RTU services
Built for the calls that close doors, lose tenants, or make customers uncomfortable.
Most small commercial buildings rely on packaged rooftop units. When one fails, the problem is not abstract HVAC comfort - it is staff, customers, tenants, equipment, and operating hours.
RTU replacement
For aging units, repeated failures, red-tagged equipment, or repair quotes that no longer make sense. Assessment first, written recommendation after.
Maintenance plans
Seasonal inspections, filter changes, belt checks, coil condition, drainage, electrical checks, and startup/shutdown service for small commercial operators.
Emergency breakdowns
Urgent no-heat or no-cooling calls for businesses that need a real technician response, not a call-centre ticket.
Controls and economizers
Thermostats, sensors, dampers, economizer faults, intermittent operation, and rooftop unit controls that stop behaving predictably.
Repair vs replacement
Clear guidance when the unit is old, parts are expensive, or the same rooftop system keeps failing every season.
Right-fit jobs
Focused on small commercial buildings, not industrial plant work.
That focus matters. The site is built for practical RTU repair, replacement, and maintenance for local commercial buildings where a fast assessment can turn into a real job.
Good fit
- OKRestaurants, cafes, shops, offices, clinics, schools, libraries, small plazas, and light commercial units.
- OKOne packaged rooftop unit or a small set of RTUs that need service, replacement, or recurring maintenance.
- OKAll Toronto, the Golden Horseshoe through Niagara Falls, and north toward cottage country and Orillia for qualified RTU jobs.
Not the focus
- NOLarge industrial plants, chillers, cooling towers, high-rise mechanical rooms, or major facilities contracts.
- NOResidential neighbour noise complaints, DIY troubleshooting, parts-only requests, or equipment manuals.
- NOSmall service calls outside the RTU scope, residential-only requests, or work where roof access and commercial equipment details are unclear.
How it works
A simple path from rooftop problem to written recommendation.
Commercial HVAC pages usually bury the next step. This one is direct: tell us what is happening, get the RTU assessed, then decide whether repair, replacement, or maintenance is the right move.
Send the building details
Share the address, business type, symptoms, unit access notes, and whether the issue is urgent.
Assessment on the roof
A technician checks the unit condition, access, controls, likely failure points, and whether the equipment is repairable.
Written next step
You get a clear recommendation: repair, replacement quote, or maintenance plan. No vague commercial HVAC package.
Service area
RTU service across Toronto, the Golden Horseshoe, Niagara, and north to cottage country.
For qualified rooftop-unit jobs, the service area is broader than a normal residential service call. The focus is matching the right commercial RTU work with a realistic response window.
All Toronto
Etobicoke
Mississauga
Oakville
Burlington
Hamilton
Vaughan
Richmond Hill
Barrie
Innisfil
Orillia
St. Catharines
Niagara Falls
Cottage country
FAQ
Questions small commercial operators ask before booking RTU service.
Do you handle emergency no-cooling or no-heat calls?
Yes, when the job is in the right service area and equipment scope. Call if the building is losing heat or cooling during operating hours.
Can you replace an old rooftop unit?
Yes. The first step is an assessment of the existing unit, curb, roof access, electrical/gas constraints, and whether repair still makes financial sense.
Do you work with schools and libraries?
Yes, for small commercial-style rooftop units where the scope fits a direct RTU service or replacement visit.
Is this a separate company from HR Mechanical?
No. rooftopunit.ca is a focused lead-gen site operated by HR Heat & Cool Mechanical Inc.
Book assessment
Tell us what is happening with the rooftop unit.
Requests route to HR Mechanical. For urgent no-heat or no-cooling calls, phone is faster.
Request sent. HR Mechanical has the details and will follow up.