# Commercial HVAC Projects | Toronto & GTA Case Studies > 10 commercial HVAC and refrigeration projects across 8 GTA areas: chiller rebuilds, RTU programs, refrigeration MSAs and emergency repairs, $1.63M in total value. URL: https://torontocommercialhvac.ca/projects/ Track Record # Commercial HVAC Projects Across Toronto and the GTA Chiller rebuilds in Bay Street towers, RTU programs on Mississauga industrial parks, refrigeration contracts for restaurant groups and grocery chains, and emergency repairs in hospitals. Every project below lists scope, price, timeline, the program lead and the result. ![Commercial HVAC crew reviewing drawings beside a new rooftop unit](/images/featured/commercial-hvac-crew-of-three-in-hard-hats-reviewi.webp) Featured Projects 10 Total Project Value $1.63M Units, Sites & Stores Covered 138 GTA Areas 8 ## Repair Projects 2 projects ![Technicians rebuilding a screw chiller in a downtown Toronto hospital](/images/featured/three-technicians-working-on-a-water-cooled-screw-.webp) [/projects/toronto-hospital-emergency-chiller-rebuild/ →](/projects/toronto-hospital-emergency-chiller-rebuild/) Downtown Toronto $94,000 ### Toronto Hospital 24-Hour Emergency Chiller Rebuild [/projects/toronto-hospital-emergency-chiller-rebuild/ →](/projects/toronto-hospital-emergency-chiller-rebuild/) A screw compressor failure in a heatwave, temporary cooling online the same day, and a full compressor rebuild in six days with infection control rules followed throughout. Repair Case study [/projects/toronto-hospital-emergency-chiller-rebuild/ →](/projects/toronto-hospital-emergency-chiller-rebuild/) ![Gas technicians repairing a suspended unit heater in a Scarborough warehouse](/images/featured/two-gas-technicians-on-a-scissor-lift-repairing-a-.webp) [/projects/scarborough-warehouse-red-tag-clearance/ →](/projects/scarborough-warehouse-red-tag-clearance/) Scarborough $42,500 ### Scarborough Warehouse 7-Unit Enbridge Red Tag Clearance [/projects/scarborough-warehouse-red-tag-clearance/ →](/projects/scarborough-warehouse-red-tag-clearance/) Seven red-tagged gas appliances repaired, combustion tested and cleared in nine working days, so the warehouse had heat back before the first hard frost. Repair Case study [/projects/scarborough-warehouse-red-tag-clearance/ →](/projects/scarborough-warehouse-red-tag-clearance/) ## Replacement Projects 4 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/) ![Technicians installing VRF indoor units in a Markham office fit-out](/images/featured/two-technicians-on-ladders-installing-a-vrf-ceilin.webp) [/projects/markham-tech-campus-vrf-fit-out/ →](/projects/markham-tech-campus-vrf-fit-out/) Markham $215,000 ### Markham Tech Campus VRF Fit-Out 24 Indoor Units [/projects/markham-tech-campus-vrf-fit-out/ →](/projects/markham-tech-campus-vrf-fit-out/) A two-floor VRF heat recovery fit-out delivered on the tenant improvement schedule, with zone-level control for open office, meeting rooms and a small server room. Replacement Case study [/projects/markham-tech-campus-vrf-fit-out/ →](/projects/markham-tech-campus-vrf-fit-out/) ![New make-up air unit being set on a North York office tower roof](/images/featured/new-make-up-air-unit-being-set-by-crane-on-a-north.webp) [/projects/north-york-office-tower-mua-replacement/ →](/projects/north-york-office-tower-mua-replacement/) North York $38,000 ### North York Office Tower MUA Full Replacement [/projects/north-york-office-tower-mua-replacement/ →](/projects/north-york-office-tower-mua-replacement/) A failed 25-year-old make-up air unit replaced over one weekend, with the food court exhaust interlocks and building pressurization rebalanced. Replacement Case study [/projects/north-york-office-tower-mua-replacement/ →](/projects/north-york-office-tower-mua-replacement/) ## Building Systems Projects 2 projects ![Technicians rebuilding a centrifugal chiller in a Bay Street office tower mechanical room](/images/featured/three-technicians-in-hard-hats-rebuilding-a-trane-.webp) [/projects/bay-street-office-tower-chiller-rebuild/ →](/projects/bay-street-office-tower-chiller-rebuild/) Downtown Toronto $148,000 ### Bay Street Office Tower 2x 100-ton Centrifugal Chiller Rebuild [/projects/bay-street-office-tower-chiller-rebuild/ →](/projects/bay-street-office-tower-chiller-rebuild/) Two centrifugal chillers rebuilt in sequence with full eddy current testing, new bearings and seals, and refrigerant handled under ASHRAE Guideline 3. The tower stayed on its 10-year PM program and logged an 18% plant energy reduction after the 2024 compressor rebuild. Building Systems Case study [/projects/bay-street-office-tower-chiller-rebuild/ →](/projects/bay-street-office-tower-chiller-rebuild/) ![Technicians replacing fill media in a Brampton industrial cooling tower](/images/featured/two-technicians-in-hard-hats-replacing-fill-media-.webp) [/projects/brampton-industrial-chiller-plant-legionella-retrofit/ →](/projects/brampton-industrial-chiller-plant-legionella-retrofit/) Brampton $62,500 ### Brampton Industrial Chiller Plant Legionella Retrofit [/projects/brampton-industrial-chiller-plant-legionella-retrofit/ →](/projects/brampton-industrial-chiller-plant-legionella-retrofit/) A process cooling tower brought back into a documented legionella control program, with new fill, new drift eliminators and automated treatment, done inside a one-week plant shutdown. Building Systems Case study [/projects/brampton-industrial-chiller-plant-legionella-retrofit/ →](/projects/brampton-industrial-chiller-plant-legionella-retrofit/) ## Maintenance Projects 2 projects ![Refrigeration technicians servicing a condensing unit behind a downtown restaurant](/images/featured/two-refrigeration-technicians-servicing-a-condensi.webp) [/projects/downtown-restaurant-row-45-site-refrigeration-msa/ →](/projects/downtown-restaurant-row-45-site-refrigeration-msa/) Downtown Toronto $185,000 annual ### Downtown Restaurant Row 45-Site Refrigeration MSA [/projects/downtown-restaurant-row-45-site-refrigeration-msa/ →](/projects/downtown-restaurant-row-45-site-refrigeration-msa/) One contractor, one log format and one phone number for 45 downtown kitchens, with per-site billing for the operator group. Maintenance Case study [/projects/downtown-restaurant-row-45-site-refrigeration-msa/ →](/projects/downtown-restaurant-row-45-site-refrigeration-msa/) ![Refrigeration technicians servicing a grocery store condensing unit in Vaughan](/images/featured/two-refrigeration-technicians-cleaning-a-condensin.webp) [/projects/vaughan-grocery-11-store-walk-in-freezer-pm/ →](/projects/vaughan-grocery-11-store-walk-in-freezer-pm/) Vaughan $38,000 annual ### Vaughan Grocery Chain 11-Store Walk-In Freezer PM [/projects/vaughan-grocery-11-store-walk-in-freezer-pm/ →](/projects/vaughan-grocery-11-store-walk-in-freezer-pm/) Quarterly PM on every walk-in freezer and cooler in the chain, with a 24-hour priority line. The contract averaged a 2:40 emergency response through 2025 with zero product loss. Maintenance Case study [/projects/vaughan-grocery-11-store-walk-in-freezer-pm/ →](/projects/vaughan-grocery-11-store-walk-in-freezer-pm/) ## Have a Similar Project? Tell us the building, the equipment and the deadline. We will walk the site and give you a written scope and price. Call (437) 524-2997 [tel:+14375242997 →](tel:+14375242997) View Project Gallery [/gallery/ →](/gallery/) ![](/images/misc/two-commercial-hvac-technicians-in-hard-hats-walki.webp) 24-Hour Commercial Emergency Dispatch ## Get a Licensed Commercial Technician on Site Call dispatch for a 2-4 hour emergency response, or send the building details and we will confirm scope, access and a written quote. 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