Commercial HVAC Contractors in Toronto, Mississauga & the GTA
TSSA-licensed commercial HVAC installation, repair, and preventive maintenance for offices, retail, restaurants, warehouses, medical clinics, schools, and property managers across the Greater Toronto Area. 24/7 dispatch, 2-4 hour response, documented service reports.
- 10+ yrs
- GTA experience
- 2-4 hr
- Emergency response
- 3-25 ton
- RTU sizing
- $0
- Capital planning report
Commercial HVAC Services
Full-service commercial HVAC for businesses of every size, from single-unit retail to multi-floor office buildings and multi-tower portfolios.
Commercial Rooftop Units (RTUs)
Installation, replacement, and seasonal service of packaged rooftop units for offices, plazas, and standalone retail. We coordinate crane lifts, roof curb adapters, and gas/electrical disconnects so the swap fits inside a single weekend window.
- 3-25 ton RTU installation
- Like-for-like and upsize replacement
- Seasonal start-up & shutdown
- Economizer & controls tuning
- Belt, bearing & motor service
- Refrigerant leak repair & R-454B transition
Ductless & VRF / Multi-Split
Multi-zone ductless and VRF systems for offices, server rooms, restaurants, and tenant fit-outs. Ideal when you need precise zone control, retrofit a heritage building, or cool a room the main system can't reach.
- Mitsubishi, Daikin & LG multi-splits
- Server room & IT closet cooling
- Restaurant dining & prep area
- Heritage building retrofits
- Branch box & line set design
- Wired controller & BMS integration
Commercial Furnace, Boiler & Hydronic
Mid-efficiency and high-efficiency commercial heating from 150,000 BTU single-stage furnaces up to multi-boiler hydronic plants. We service make-up air units, unit heaters, and radiant systems for warehouses and shop floors.
- Commercial furnace install & service
- Atmospheric & condensing boilers
- Make-up air unit (MAU) service
- Hydronic radiant & baseboard
- Garage & warehouse unit heaters
- Annual TSSA combustion testing
Preventive Maintenance Contracts
Monthly, quarterly, semi-annual or annual maintenance agreements with documented inspection reports. Contract clients get priority dispatch, fixed labour rates, and a written multi-year capital plan so budget approval becomes a non-event.
- Custom maintenance schedule
- Priority 2-4 hr emergency response
- Fixed contract labour rate
- Filter & belt stock on site
- Photo & report after each visit
- 5-year capital replacement plan
Verticals We Serve
Different buildings, different rules. We tune our scheduling, paperwork, and equipment recommendations to fit how each industry actually operates.
Office Buildings
Multi-tenant towers, single-tenant offices, executive suites.
Retail & Plazas
Standalone stores, strip plazas, anchor tenant fit-outs.
Restaurants
Dining-room HVAC, prep area, kitchen exhaust make-up air.
Property Management
Multi-unit residential, condo corporations, REITs.
Warehouses & Industrial
Make-up air, unit heaters, dock door curtains, light industrial.
Medical & Dental
Clinics, dental offices, physio, walk-ins, IT-cooled labs.
Schools & Daycares
Daycares, private schools, training centres, churches.
Builders & Developers
GC subcontracting, tenant improvement, design-build retrofits.
Commercial HVAC Cost Ranges (GTA 2026)
Real-world price bands for the most common commercial HVAC jobs we quote across Toronto, Mississauga, Brampton, Vaughan, and the rest of the GTA. Final pricing depends on building access, equipment tier, and refrigerant type.
| Service / Equipment | Typical Range (CAD) |
|---|---|
| RTU diagnostic & service call (business hours) | $185 - $245 |
| RTU after-hours emergency call | $285 - $385 |
| RTU like-for-like replacement (5 ton, single-stage) | $11,500 - $16,500 |
| RTU high-efficiency upsize (7.5-10 ton, 2-stage) | $18,500 - $28,000 |
| Commercial furnace install (150-300 MBH) | $6,800 - $14,500 |
| Atmospheric to condensing boiler swap (300-500 MBH) | $14,000 - $32,000 |
| Multi-zone ductless / VRF (4-8 zones) | $18,500 - $42,000 |
| Preventive maintenance contract (per RTU, annual) | $485 - $785 |
Ranges include parts, labour, and standard disposal. Crane rental, traffic-control permits, structural work, and electrical upgrades are quoted separately.
Why Property Managers Choose EcoFrost for Commercial HVAC
TSSA-Licensed Gas Technicians
Every commercial tech holds an active TSSA gas licence (G2 or G1) and works with experienced refrigeration partners on R-410A and R-454B systems. We pull permits, log work, and own the paperwork.
Minimal Downtime
We schedule around your business hours - evenings, overnight, weekends - and stock common parts so we rarely lose a day waiting on suppliers.
All Brands & Makes
Lennox, Carrier, Trane, York, Daikin, Mitsubishi, LG, Goodman, ICP, AAON, Reznor. No proprietary lock-in.
Documented Service Reports
Every call leaves with a photo report, findings, work completed, and recommended follow-up. Property managers can drop it straight into the building file.
No heat or no cool right now?
After-hours line goes straight to an on-call technician, not a call centre. Average response 2-4 hours across the GTA.
Commercial HVAC FAQs
How much does commercial HVAC service cost in Toronto?
Business-hour diagnostic calls start at $185-$245 depending on travel zone. Annual preventive-maintenance contracts run roughly $485-$785 per RTU per year. Major replacements scale by tonnage: a 5-ton like-for-like RTU swap is typically $11,500-$16,500, while a 7.5-10 ton high-efficiency upgrade runs $18,500-$28,000.
Do you offer maintenance contracts for commercial buildings?
Yes. We offer monthly, quarterly, semi-annual, and annual maintenance contracts for commercial and multi-unit residential properties. Contracts include scheduled inspections, filter and belt changes, refrigerant pressure checks, combustion testing, priority dispatch, and discounted rates on after-hours emergencies. You also get a written capital-replacement plan so you can budget years ahead.
How quickly can you respond to a commercial HVAC emergency?
We aim for 2-4 hour response across the GTA, 24/7. Contract clients move to the front of the dispatch queue and get a guaranteed response window. For no-heat or no-cool calls during peak season, our after-hours line goes straight to an on-call technician, not a call centre.
Can you handle multi-unit residential or multi-tower portfolios?
Yes. We work with property managers, condo corporations, and REITs on portfolios ranging from a single low-rise to multiple towers. We coordinate with on-site staff and concierges, log access requests, follow building rules for elevators and loading docks, and bill in formats that drop straight into your property-management software.
Do you install rooftop units (RTUs) and coordinate crane lifts?
Yes. We replace and install commercial RTUs from 3 to 25 tons across the GTA. For larger units we coordinate crane scheduling, roof curb adapters, gas and electrical disconnects, traffic-control permits, and roof-membrane patching. Most single-unit swaps fit inside a Saturday or off-hours window.
Are you ready for the R-454B refrigerant transition in 2025?
Yes. As of January 2025, new commercial split and packaged systems sold in Canada are transitioning from R-410A to R-454B (A2L mildly flammable refrigerant). Our technicians are trained on the new A2L safety practices, leak detection equipment, and brazing procedures. Existing R-410A systems remain serviceable - we will keep them running and only push replacement when the math actually supports it.
Can you handle restaurant kitchen exhaust and make-up air?
Yes. We service make-up air units (MAUs), exhaust fans, and ductless dining-room systems for restaurants across the GTA. Note: hood-cleaning, fire-suppression certification (ULC-S536), and grease-trap work are separate trades - we coordinate with those vendors but do not perform them in-house.
Do you provide capital-planning reports for property managers?
Yes, and it is included free with any maintenance contract. After our first comprehensive walkthrough, you get a written report covering equipment age, condition, remaining service life, recommended replacement year, and budget estimate per unit. Most clients use it directly in their reserve-fund planning or annual operating budget.
Will you respond to public RFQs and design-build tenders?
Yes. We bid on public and private RFQs for commercial HVAC retrofits, tenant improvements, and design-build mechanical packages across the GTA. Email ecofrostsales@gmail.com or call (416) 835-4775 with the tender package and deadline - we will confirm bid intent within 48 hours.
Do you commission new commercial HVAC equipment?
Yes. Commissioning includes start-up, refrigerant charge verification, airflow balancing, thermostat and BMS integration, combustion analysis on gas equipment, and a written commissioning report. We hand over equipment manuals, warranty registration, and a recommended first-year maintenance schedule.
Get a Free Commercial HVAC Quote
Serving offices, retail, restaurants, warehouses, medical, schools, and property managers across Toronto, Mississauga, Brampton, Vaughan, Oakville, Etobicoke, Scarborough, and the rest of the GTA.