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Packaged rooftop units on a Toronto commercial roof at dusk

Free calculator

Commercial RTU Sizing Calculator

Estimate the cooling tonnage a commercial space needs, then see which rooftop unit size and installed price range to ask about.

Conditioned area on the roof's zone, not the whole building.

Planning estimate only. Final sizing needs a Manual J/S load calculation that accounts for envelope, glazing, ventilation air and internal loads on your building.

More tools: see all free tools

Packaged rooftop units on a Toronto commercial roof at dusk

24/7 dispatch | 2-4 hr on-roof GTA core

Want the Number in Writing?

Site assessment, then a written quote within 24 hours. Parts, labour, crane, permit and HST on one line.

  • 24-hour written quote
  • Save on Energy filed for you
  • Red Seal + TSSA + ESA + CRE
  • $5M liability + WSIB
Book Assessment 24/7 Dispatch