# Rooftop Unit Installation Toronto | Toronto Commercial HVAC > Rooftop unit installation and replacement in Toronto: new construction, TI, end-of-life swaps and capacity upgrades. $18K-$95K per unit. 10-15% off above 4 units. URL: https://torontocommercialhvac.ca/rooftop-unit-installation/ Installation & Replacement $18K-$95K/unit # Rooftop Unit Installation & Replacement in Toronto, ON | New Install, End-of-Life Swap & Capacity Upgrade Last updated: October 10, 2026 Rooftop unit installation and replacement for new construction, tenant improvements, end-of-life swaps and capacity upgrades. Pricing runs $18K-$95K per unit depending on tonnage, crane logistics and electrical scope, with 10-15% off programs above 4 units. RTU new installs, swaps and capacity upgrades. $18K-$95K per unit. - Crane lift and road permit coordination - Roof adapter fabrication - BAS integration at start-up - 10-15% discount above 4 units Call (437) 524-2997 [tel:+14375242997 →](tel:+14375242997) Request Service [/contact/ →](/contact/) View pricing [#pricing →](#pricing) ![Crane lifting a new rooftop unit over a Toronto commercial building](/images/misc/mobile-crane-lifting-a-new-carrier-48tc-rooftop-un.webp) Quick Facts Pricing $18K-$95K/unit Emergency response 2-4 hours, 24/7 Labour warranty 2 years Program lead James Cheng, RTU Program Manager Commercial Credentials & Verification TSSA G1 + G2 Licensed Gas Technicians ESA Electrical Safety Authority 313A Refrigeration Licensed Refrigeration Mechanics $5M CGL + WSIB Enbridge-Authorized Since 2006 2-4 Hour Emergency Response 90-Day Labour Warranty on Repairs / 2-Year on Installs 5-Star Commercial Satisfaction 20+ Years Commercial-Only Toronto Commercial HVAC [/ →](/) installs and replaces packaged rooftop units across Toronto and the GTA for new construction, tenant improvements, end-of-life swaps and capacity upgrades. We set units from 3 to 150 tons, including Carrier 48TC, Trane Voyager, York, Lennox, Daikin Rebel and AAON. Rooftop unit installs go wrong in four places. The new unit is copied from the old nameplate instead of sized from a load calculation. The crane day slips because road permits were not booked. The new unit does not match the existing roof opening, so the roof gets cut and leaks. Controls are left as an afterthought and the BAS never sees the unit. We plan around all four. Installed pricing runs $18,000 to $95,000 per unit depending on tonnage, crane logistics and electrical scope. Programs above 4 units get 10-15% off, and every install carries a 2-year labour warranty. ## What Does RTU Installation Include? ### Load calculation and selection We size each unit from the actual space load, not the old nameplate. Buildings that changed use often need a different size, and right-sizing saves money twice: on the unit and on every hour it runs. ### Rigging and crane lift Rigging plan, crane booking and municipal road occupancy permits. Lifts are usually on early weekend mornings, and multiple units can share one crane day. ### Roof adapter fabrication New units rarely match the old footprint. We fabricate a roof adapter so the new unit sits on the existing opening with a sealed transition and no new roof cuts. ### Electrical, gas and controls New fused disconnects where required, gas connections to CSA B149.1, condensate drains and controls integration with your BAS. For larger controls projects, see BMS and HVAC controls [/commercial-bms-controls/ →](/commercial-bms-controls/) . ## RTU Installation Cost by Size | Unit size | Typical installed price | Typical use | | --- | --- | --- | | 3-7.5 tons | $18K-$32K | Retail units, restaurants, small offices | | 10-25 tons | $32K-$65K | Plazas, office floors, light industrial | | 30+ tons | $65K-$95K | Big-box, industrial, institutional | | 4+ unit programs | 10-15% off | Plazas, portfolios, campuses | ## When Is It Time for a New Rooftop Unit? - The existing RTU is past 18-22 years or runs on R-22. - A major repair costs more than half of a new unit. - The heat exchanger is cracked. - The space has changed use and the unit cannot keep up. - New construction or shell space needs a first install. ## Planning a Multi-Unit RTU Program For plazas and portfolios, we audit every unit, rank them by risk and group replacements into phases. Units on the same block can share a crane day, and the 10-15% program discount applies above 4 units. Our Mississauga industrial park program replaced 14 Carrier 48TC units for $420,000 in six weeks with zero tenant downtime. Broader multi-system programs sit under commercial HVAC replacement [/commercial-hvac-replacement/ →](/commercial-hvac-replacement/) . ## RTU Installation Across Toronto and the GTA We install in Mississauga and Brampton industrial parks, Vaughan and Markham retail, Etobicoke QSR stores and plazas across Scarborough and North York. If your existing unit just needs a fix, start with rooftop unit repair [/rooftop-unit-repair/ →](/rooftop-unit-repair/) . Transparent Pricing ## How Much Does Rooftop Unit Installation Cost in Toronto? Small RTU (3-7.5 tons) $18K-$32K Retail units, small offices, restaurants. - Roof adapter if needed - Disconnect and gas connection - 2-year labour warranty Book This [tel:+14375242997 →](tel:+14375242997) Most Requested Mid RTU (10-25 tons) $32K-$65K Plazas, office floors, light industrial. - Crane and permit coordination - Load calculation - BAS integration Book This [tel:+14375242997 →](tel:+14375242997) Large RTU (30+ tons) $65K-$95K Big-box retail, industrial, institutional. - Structural review - Rigging plan - Commissioning report Book This [tel:+14375242997 →](tel:+14375242997) Programs (4+ units) 10-15% off Phased multi-unit programs across one or many buildings. - Per-unit audit - Shared crane days - Per-tenant cost allocation Book This [tel:+14375242997 →](tel:+14375242997) Per-unit pricing depends on tonnage, crane size and road permits, electrical and gas changes, roof adapter fabrication and controls. Programs above 4 units get 10-15% off. Why Us ## Why Choose Toronto Commercial HVAC for RTU Installation? ### Right-Sized Units Load calculations before ordering. Many older buildings drop tonnage on replacement and save on both capital and energy. ### Crane Days That Work Road permits, rigging plans and weekend lifts booked weeks ahead, with up to four units per lift day. ### Roof Adapters Fabricated New units drop onto existing roof openings without cutting new holes or reworking the roof. ### Program Discounts 10-15% off when you replace more than 4 units, plus shared crane days across buildings. ### Tenant Cost Allocation Written per-tenant allocation before each lift, so there are no lease disputes afterwards. ### 2-Year Labour Warranty Every installation carries a 2-year labour warranty with manufacturer parts coverage registered at start-up. ## Repair or replace? Get the numbers first. A $185 diagnostic gives you written findings per unit, waived when the approved repair is over $750. (437) 524-2997 [tel:+14375242997 →](tel:+14375242997) Request Service [/contact/ →](/contact/) Process ## How Does Our RTU Installation Process Work? 1. 01 ### Audit and Load Existing unit audit and a load calculation for the space so the new RTU is right-sized. 2. 02 ### Order and Permit Equipment ordered, roof adapter designed, crane and road permits booked, tenants notified. 3. 03 ### Lift Day Old unit removed and new unit set by crane, usually on an early weekend morning. 4. 04 ### Connect and Start Gas, electrical, condensate and controls connected. James Cheng, RTU Program Manager, is on the roof for every lift. 5. 05 ### Commission Start-up in all modes, BAS tie-in, manufacturer registration and a commissioning report. Field Photos ## RTU Installation Work on Toronto Commercial Sites Track Record ## Related Commercial Projects All projects [/projects/ →](/projects/) ![Crane lifting a new rooftop unit onto a Mississauga industrial building](/images/featured/crane-lifting-a-carrier-48tc-rooftop-unit-onto-a-m.webp) [/projects/mississauga-industrial-park-14-rtu-replacement/ →](/projects/mississauga-industrial-park-14-rtu-replacement/) Mississauga $420,000 ### Mississauga Industrial Park 14-RTU Replacement Program [/projects/mississauga-industrial-park-14-rtu-replacement/ →](/projects/mississauga-industrial-park-14-rtu-replacement/) Fourteen ageing RTUs replaced building by building on Sunday crane days, with a recalculated load for each tenant space and zero tenant downtime across the six-week program. Replacement Case study [/projects/mississauga-industrial-park-14-rtu-replacement/ →](/projects/mississauga-industrial-park-14-rtu-replacement/) ![Technicians replacing a rooftop unit on an Etobicoke quick-service restaurant](/images/featured/two-technicians-removing-an-old-rooftop-unit-from-.webp) [/projects/etobicoke-qsr-32-store-rtu-replacement/ →](/projects/etobicoke-qsr-32-store-rtu-replacement/) Etobicoke $385,000 ### Etobicoke QSR 32-Store RTU Age Audit + Replacement Phase 1 [/projects/etobicoke-qsr-32-store-rtu-replacement/ →](/projects/etobicoke-qsr-32-store-rtu-replacement/) A 32-store RTU age audit that ranked every unit by risk, followed by a phase 1 replacement of the oldest units with zero lost trading days. Replacement Case study [/projects/etobicoke-qsr-32-store-rtu-replacement/ →](/projects/etobicoke-qsr-32-store-rtu-replacement/) Client Feedback ## What Clients Say About Our RTU Installation 5-Star Commercial Satisfaction > "Four restaurants, four overnight swaps, and the program discount covered most of one unit. No location lost a service." Leah Goldberg Director of Real Estate, Restaurant group, 6 locations Vaughan RTU replacements at 4 restaurants with 12% program discount$148,000 > "Our production floor was always hot in July. They ran the load calc, upsized the unit and handled the structural review. The floor holds 24C now." Martin Szabo Plant Manager, Plastics manufacturing plant Brampton Capacity upgrade from 20-ton to 30-ton RTU with structural review$78,500 > "The roof adapters meant no new roof cuts, and every tenant had their share in writing before the crane showed up." Renee Lavoie Leasing and Operations Manager, Neighbourhood retail plaza Markham Three RTU swaps with roof adapters and per-tenant allocation$96,000 Straight Answers ## RTU Installation FAQs ### How much does rooftop unit installation cost in Toronto? + Rooftop unit installation in Toronto typically costs $18,000 to $95,000 per unit. Small 3 to 7.5-ton units for retail stores and restaurants usually run $18,000 to $32,000. Mid-size 10 to 25-ton units for plazas and offices run $32,000 to $65,000. Large 30-ton-plus units for big-box retail and industrial run $65,000 to $95,000. The main cost drivers are tonnage, crane size and road permits, electrical and gas changes, roof adapter fabrication and controls integration. Programs replacing more than 4 units get 10-15% off, and multiple units can share one crane day to cut lift costs. ### How long does an RTU replacement take? + Most single-unit swaps take one day on site once equipment arrives, with the crane portion lasting a few hours. Equipment lead times are typically four to eight weeks. Multi-unit programs can set up to four units per lift day. ### What is a roof adapter and why do I need one? + New units rarely match the footprint of the old unit. A roof adapter is a fabricated transition that lets the new unit sit on the existing roof opening, so no new holes are cut and the roof stays sealed. We design and fabricate them before lift day. ### Do you handle crane and road permits? + Yes. We book the crane, prepare the rigging plan and get municipal road occupancy permits where needed. Lifts are usually scheduled for early weekend mornings. ### Can you replace RTUs without closing my store or office? + Yes. Most swaps happen on weekends or before opening. Our Mississauga Streetsville plaza job swapped six units on one Sunday crane day. ### Should the new unit be the same size as the old one? + Not necessarily. We run a load calculation for each space. Buildings that changed use or were oversized from the start often get a smaller, more efficient unit. ### Which brands do you install? + Carrier 48TC, Trane Voyager and Precedent, York, Lennox, Daikin Rebel and AAON. We recommend based on the building, parts availability and your existing fleet. ### Do you tie new RTUs into our BAS? + Yes. BACnet thermostats or unit controllers are integrated at start-up so you get remote alarms and schedules. ### Are there incentives for high-efficiency RTUs? + Some Enbridge and IESO programs apply, especially for high-efficiency heating sections and controls. We check eligibility before ordering. ### What warranty comes with an RTU installation? + A 2-year labour warranty, plus manufacturer parts warranties registered at start-up. Free Tools ## Try the Commercial Cooling Load Calculator Estimate the cooling capacity in BTU/h and tons for an office, retail, restaurant or industrial space before you size a rooftop unit or split system. Use calculator [Try the Commercial Cooling Load Calculator →](/tools/btu-calculator/) Keep Exploring ## Related Services ![Technicians in fall-arrest harnesses repairing a rooftop unit on a Toronto plaza roof](/images/misc/two-technicians-in-hard-hats-and-fall-arrest-harne.webp) [/rooftop-unit-repair/ →](/rooftop-unit-repair/) ### Rooftop Unit Repair [/rooftop-unit-repair/ →](/rooftop-unit-repair/) $185+ diag RTU repair for all major manufacturers, 3 to 150 tons. $450-$5,500. View service [/rooftop-unit-repair/ →](/rooftop-unit-repair/) ![Crane removing an end-of-life rooftop unit from a Toronto retail plaza](/images/misc/crane-removing-a-rusted-20-year-old-rooftop-unit-f.webp) [/commercial-hvac-replacement/ →](/commercial-hvac-replacement/) ### Commercial HVAC Replacement [/commercial-hvac-replacement/ →](/commercial-hvac-replacement/) $12K-$680K End-of-life replacement for 15+ year buildings with reserve-fund documentation per unit. View service [/commercial-hvac-replacement/ →](/commercial-hvac-replacement/) ![Installers running piping and ductwork for a new commercial HVAC system in a Toronto office fit-out](/images/misc/three-installers-in-hard-hats-setting-refrigerant-.webp) [/commercial-hvac-installation/ →](/commercial-hvac-installation/) ### Commercial HVAC Installation [/commercial-hvac-installation/ →](/commercial-hvac-installation/) $18K-$450K New-build and retrofit installs: RTU sets, chiller plants, boiler rooms, VAV and VRF fit-outs. View service [/commercial-hvac-installation/ →](/commercial-hvac-installation/) ![Technicians servicing rooftop units above a Toronto strip plaza](/images/misc/two-technicians-servicing-a-row-of-rooftop-units-a.webp) [/commercial-hvac-for-retail/ →](/commercial-hvac-for-retail/) ### Commercial HVAC for Retail [/commercial-hvac-for-retail/ →](/commercial-hvac-for-retail/) $185+ diag RTU service and replacement for plazas, strip centres, malls and standalone retail. View service [/commercial-hvac-for-retail/ →](/commercial-hvac-for-retail/) ![](/images/misc/two-commercial-hvac-technicians-in-hard-hats-walki.webp) 24-Hour Commercial Emergency Dispatch ## Ready to Book RTU Installation? Rooftop Unit Installation across Toronto and the GTA: $18K-$95K/unit, written findings before any work, and a 2-4 hour emergency response. Call (437) 524-2997 [tel:+14375242997 →](tel:+14375242997) Request Service [/contact/ →](/contact/) - TSSA G1+G2, ESA, 313A - Written findings every visit - 90-day / 2-year labour warranty