# RTU Replacement Toronto | Rooftop Units Toronto Pros > Commercial rooftop unit replacement Toronto. Like-for-like or right-sized, curb adapters, crane day handled. 24-hour written quote. Save on Energy filed. URL: https://rooftopunitstoronto.ca/commercial-rooftop-unit-replacement-toronto/ ![Old rooftop unit lifted off a Toronto retail roof by crane during a replacement](/images/misc/old-rusted-rooftop-unit-being-lifted-off-a-toronto.webp) Curb Adapters Fabricated In-House # Commercial Rooftop Unit Replacement in Toronto, Rebate-Net and On Paper Last updated: October 24, 2026 End-of-life RTU swaps with curb adapters, crane permits and rebate-net pricing. - Repeat compressor failures - Rusted RTU casing - Unit past 15-20 years - Parts no longer stocked - Rising hydro bills - R-22 refrigerant leak Book a Site Assessment [/contact/ →](/contact/) View Pricing [#pricing →](#pricing) 24-Hour Written Quote From $9,500 per replacement RTU by tonnage - 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? Repeated compressor failures, a rusted casing, an obsolete refrigerant or a unit past 15-20 years: we write the repair-vs-replacement math first, then swap like-for-like or right-size. Custom curb adapters, City of Toronto crane and street-occupancy permits and Save on Energy filing are part of the quote. - Repeat compressor failures - Rusted RTU casing - Unit past 15-20 years - Parts no longer stocked - Rising hydro bills - R-22 refrigerant leak 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. ## Signs Your Rooftop Unit Is at the End of Its Life Commercial rooftop unit replacement rarely comes out of nowhere. The unit tells you for a season or two first: the same compressor fails again, the casing rusts through, the coil fins crumble, the parts supplier says the board is discontinued, or the hydro bill keeps climbing while comfort drops. For rooftop units in Toronto [/ →](/) , freeze-thaw cycles and road dust shorten that runway. Most packaged RTUs last 15-20 years with regular maintenance. Past that point, each repair buys less time and costs more. Units still running on R-22 face an added problem: the refrigerant is no longer made, so a major leak means paying reclaimed-refrigerant prices to fill a system that is leaking anyway. ## Repair or Replace: The Written Comparison We do not decide for you. Every older unit gets a written comparison: | | Repair | Replace | | --- | --- | --- | | Upfront cost | Repair tally | Installed price minus Save on Energy rebate | | Expected life | Until the next major failure | 15-20 years | | Efficiency | Unchanged | Higher IEER and SEER2, lower hydro | | Refrigerant | Stays on R-22 or older R-410A | Current refrigerant, R-410A phase-down ready | When the repair is small and the unit is sound, we recommend the repair, as we did on a Dundas West compressor that another contractor wanted to replace the whole unit for. See commercial rooftop unit repair [/commercial-rooftop-unit-repair-toronto/ →](/commercial-rooftop-unit-repair-toronto/) . ## How a Commercial RTU Replacement Works ### Survey and right-sizing We log age, refrigerant, nameplate data, curb dimensions and duct openings for every unit. A Manual J check confirms the right tonnage. Tenant use often changes over 20 years, so like-for-like is not automatic. ### Curb adapters and structure New units rarely match old footprints. Our sheet-metal shop builds **curb adapters** that transition the new unit onto the existing opening, and our crew re-flashes at the curb. When the new unit is heavier, a **structural load review** comes before the lift. ### Crane day and permits Crane lifts in Toronto often need a **ROW permit** and a **Toronto Transportation Services street occupancy permit**, plus traffic control. We file them and book the lift for a low-traffic window, usually early on a weekend morning downtown. ### The swap Refrigerant is recovered, power and gas are isolated, the old unit comes off, the adapter goes on and the new unit is set, connected and started. Each unit is usually a one-day swap. Multi-unit roofs are phased so tenants stay open. ## How Much Does RTU Replacement Cost in Toronto? | Size | Installed | Timeline | | --- | --- | --- | | 3-5 ton | $9,500-$16K | 3-5 days | | 10 ton packaged | $18K-$34K | 5-7 days | | 15-20 ton | $32K-$58K | 7-10 days | | 25 ton + large | $55K-$95K | 2-3 wks | Then take off the rebate. Save on Energy [/save-on-energy-retrofit-toronto/ →](/save-on-energy-retrofit-toronto/) pays $200-$1,500 per ton on qualifying high-efficiency retrofits, and we net it on the invoice. A typical office or retail retrofit captures $8,000-$30,000. ## Replacement Brands We Install We are an authorized dealer for Lennox, Carrier, York, Trane, Daikin, Rheem and American Standard. Common replacements include the **York Predator** and **Carrier 50TC** for legacy footprints, Lennox LCG for multi-unit programs, and Daikin Rebel heat pump RTUs where electrification is a goal. See our Carrier [/carrier-rooftop-unit-toronto/ →](/carrier-rooftop-unit-toronto/) and York [/york-rooftop-unit-toronto/ →](/york-rooftop-unit-toronto/) pages for model notes. ## Planning Replacements Across a Portfolio Owners with older plazas in Scarborough [/service-areas/scarborough/ →](/service-areas/scarborough/) , Brampton or Mississauga often have a roof full of units that all hit end of life within a few years. Replacing them one emergency at a time is the most expensive way to do it. We survey every unit, rank them, and build a two- or three-season plan with rebate-net pricing so capex can be budgeted and Save on Energy filed for each phase. Published pricing ## How Much Does RTU Replacement 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. 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/) . ### RTU Replacement pricing CAD + HST | Service | Price | Timeline | | --- | --- | --- | | 3-5 ton RTU | $9,500-$16K | 3-5 days | | 10 ton packaged | $18K-$34K | 5-7 days | | 15-20 ton | $32K-$58K | 7-10 days | | 25 ton + large | $55K-$95K | 2-3 wks | Free tools ## Try Our Free RTU Energy Cost Estimator Two minutes, no email required. Results show on screen first. ### RTU Energy Cost Estimator Compare the yearly cooling electricity cost of your existing rooftop unit with a high-efficiency replacement. Use the calculator [RTU Energy Cost Estimator →](/tools/energy-cost-estimator/) Case study | The Junction, Toronto | Dundas St W and Keele ## 3-RTU replacement on a 14,000 sq ft Junction retail building Three end-of-life RTUs on a 14,000 sq ft retail building had rusted casings and repeat failures. The new units had different footprints from the originals, so our shop fabricated curb adapters to fit the existing openings. The roofer was not needed, tenants stayed open through a phased crane schedule, and the final invoice matched the quote. Equipment 3 replacement packaged RTUs + custom curb adapters Size 14,000 sq ft retail Turnaround Phased over one week Price $46,800 Why property teams pick us ## Why Choose Rooftop Units Toronto Pros for RTU Replacement? ### Honest repair math We do not push replacement. A sound unit with a cheap fault gets repaired. The written comparison shows both numbers. ### In-house curb adapters Our sheet-metal shop builds adapters for legacy York, Carrier and Lennox footprints, so most swaps need no roofer and no new roof opening. ### Permits handled City of Toronto ROW and Toronto Transportation Services street occupancy permits are filed as part of the quote. ### Rebate filed first Save on Energy pre-approval is in hand before equipment is ordered. That is how one client captured $87K the other bidders missed. ### Phased for tenants Multi-unit roofs are replaced in phases so tenants stay open, with written notice before each crane day. ### Same number as the quote Our Junction client paid exactly the $46,800 on the quote. Extras are only added with your written approval. What to expect ## How Does Our RTU Replacement Work? 1. 01 ### Condition survey Age, refrigerant, repair history, curb condition and structure are logged for every unit, so replacement priority is based on facts. 2. 02 ### Right-size check Like-for-like is not always right. A Manual J check confirms whether the replacement should be the same tonnage, smaller or larger. 3. 03 ### Rebate-net quote Unit, curb adapter, crane, permits and HST on one line within 24 hours, with the Save on Energy rebate shown against it. 4. 04 ### Crane day swap Refrigerant recovered, old unit lifted off, adapter set and flashed, new unit lifted on and connected, usually in one day per unit. 5. 05 ### Startup + disposal Commissioning readings documented, old equipment recycled and refrigerant handled to Ontario rules. Field photos ## Our RTU Replacement Work Recent GTA rooftops and mechanical rooms. Click any photo to enlarge. ### Before + After ![Rusted 20-year-old commercial RTU casing](/images/cards/rusted-20-year-old-commercial-rooftop-unit-casing-.webp) Before ![New high-efficiency packaged RTU on the same curb](/images/cards/new-high-efficiency-packaged-rooftop-unit-on-the-s.webp) After The Junction, 14,000 sq ft retail: 3-RTU replacement, $46,800, curb adapters fabricated in-house. Client Records ## What Clients Say About Our RTU Replacement > "Three RTUs on our Junction retail building replaced for $46,800, exactly the number on the quote. Curb adapters fabricated in-house so the roofer was not needed." OHOmar H.Landlord, The Junction > "Three contractors quoted our 14-RTU Mississauga industrial park. Rooftop Units Toronto Pros was the only one who filed Save on Energy. Rebate captured $87K. Install 11 days, park running." MKMichael K.Facility Ops, Mississauga Airport Rd > "We have eleven old units across two Scarborough buildings. They ranked every one by condition and gave us a three-season replacement plan with rebate-net prices." LPLinda P.Asset manager, Golden Mile > "Our old Carrier units did not match any new curb. Their adapters made the swap a one-day job per unit with no roof work." MTMarcus T.PM, Oakville retail plaza > "The podium RTU replacement needed board approval and a street permit. They prepared both and the lift happened on a Sunday morning without a single complaint." HKHelen K.Board president, Liberty Village ## 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 ## RTU Replacement 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) ### When should a commercial rooftop unit be replaced instead of repaired? Replacement usually makes sense when the unit is past 15-20 years, needs its second compressor or a heat exchanger, runs on R-22 with an active leak, has a rusted casing, or keeps failing every season. We put the repair cost and the replacement cost, minus any Save on Energy rebate, side by side in writing so you can decide on real numbers. ### How much does commercial RTU replacement cost in Toronto? 3-5 ton units run $9,500-$16K installed, 10 ton $18K-$34K, 15-20 ton $32K-$58K, and 25 ton and larger $55K-$95K. Curb adapters, ROW permits and structural work are shown on separate lines when needed. Our Junction 3-RTU replacement came in at $46,800. ### What is a curb adapter and do I need one? A curb adapter is a sheet-metal transition that lets a new unit sit on an old curb when the footprints or duct openings do not match. Most legacy York, Carrier and Lennox units need one. We fabricate them in our shop, which avoids cutting a new roof opening. ### Do I need a roofer for an RTU replacement? Usually not. Our crew re-flashes at the curb as part of the swap. A roofer is only needed when the membrane around the curb is failing or the roof is under a warranty that requires its own contractor. ### Do you handle crane permits in Toronto? Yes. City of Toronto ROW permits, Toronto Transportation Services street occupancy permits, traffic control and paid-duty officers are filed and booked as part of the quote. ### Should I replace like-for-like or change the tonnage? It depends on how the space is used today. Many units were sized for a tenant who left years ago. A quick Manual J check tells us whether the replacement should match, go smaller (saving capex and hydro) or go larger. ### How long does a replacement take? The swap itself is usually one day per unit. From signed quote to startup, 3-5 ton and 10 ton units run 3-7 days, 15-20 ton 7-10 days, and large units 2-3 weeks, depending on equipment lead time and permits. ### What happens to the old unit and refrigerant? Refrigerant is recovered by licensed techs before the unit is disconnected, and the old equipment is removed and recycled. Disposal is included in the quote. ### Will the replacement qualify for a rebate? High-efficiency replacements often qualify for Save on Energy at $200-$1,500 per ton. We file the pre-approval before ordering, then net the rebate on your invoice. ### Can you replace units across a whole portfolio? Yes. We survey every unit, rank by condition and risk, and build a phased plan over two or three seasons with rebate-net pricing, so capex can be budgeted instead of forced by failures. Keep the whole roof covered ## Related Services ![Crane lowering a new packaged rooftop unit onto a roof curb in Toronto](/images/misc/mobile-crane-lowering-a-new-packaged-rooftop-unit-.webp) From $9,500 [/commercial-rooftop-unit-installation-toronto/ →](/commercial-rooftop-unit-installation-toronto/) ### Commercial Rooftop Unit Installation [/commercial-rooftop-unit-installation-toronto/ →](/commercial-rooftop-unit-installation-toronto/) New and added-capacity RTU installs sized with Manual J/S, crane coordinated, commissioned and signed off. Details + pricing [/commercial-rooftop-unit-installation-toronto/ →](/commercial-rooftop-unit-installation-toronto/) ![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/) ![New high-efficiency rooftop units on a Mississauga roof with a rebate application](/images/misc/new-high-efficiency-packaged-rooftop-units-on-a-mi.webp) [/save-on-energy-retrofit-toronto/ →](/save-on-energy-retrofit-toronto/) ### Save on Energy Retrofit [/save-on-energy-retrofit-toronto/ →](/save-on-energy-retrofit-toronto/) Pre-audit, application and rebate netted against your invoice on qualifying HVAC retrofits. Details + pricing [/save-on-energy-retrofit-toronto/ →](/save-on-energy-retrofit-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 RTU Replacement? 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