Ontario tenders · Mechanical (HVAC & plumbing)
Open mechanical (HVAC & plumbing) tenders in Ontario
22 open mechanical (HVAC & plumbing) construction tenders in Ontario right now, scanned daily from the official procurement portals and tagged by trade.
Updated October 21, 2026.
Open now
22
New in last 30 days
16
Closing soonest
- City of TorontoToronto, ONCloses Oct 21, 2026via City of TorontoMechanicalView on official portal →
- City of TorontoOntarioCloses Oct 21, 2026via MERXMechanicalView on official portal →
- Yee Hong Centre for Geriatric CareScarborough, OntarioCloses Oct 22, 2026via BiddingoMechanicalView on official portal →
- Ottawa International Airport AuthorityOttawa, ONCloses Oct 22, 2026via MERXMechanicalView on official portal →
- Kemptville District HospitalOntarioCloses Oct 22, 2026via MERXMechanicalView on official portal →
Prequalified HVAC Contractors
2 days leftBrock UniversityHamilton-Niagara Peninsula, ONCloses Oct 22, 2026via MERXMechanicalView on official portal →Preventative & On-Demand Maintenance Services for HVAC Systems in the Town of New Tecumseth
6 days leftTown of New TecumsethAlliston, OntarioCloses Oct 27, 2026via BiddingoMechanicalView on official portal →- University of GuelphKitchener-Waterloo-Barrie, ONCloses Oct 27, 2026via MERXMechanicalInsulationView on official portal →
- MetrolinxSouthern OntarioCloses Oct 29, 2026via MERXMechanicalView on official portal →
- University of Toronto – OREPToronto, ONCloses Oct 29, 2026via MERXMechanicalView on official portal →
- Town of RenfrewOntarioCloses Oct 30, 2026via MERXMechanicalView on official portal →
- St. Joseph's Care GroupNorthwest, ONCloses Oct 30, 2026via MERXMechanicalView on official portal →
- Western UniversityLondon, ONCloses Nov 3, 2026via MERXMechanicalElectricalView on official portal →
- University of Toronto – OREPToronto, ONCloses Nov 4, 2026via MERXMechanicalView on official portal →
Preston Library HVAC Replacement
15 days leftCambridge Public LibraryCambridge, OntarioCloses Nov 5, 2026via BiddingoMechanicalView on official portal →- D. Grant Construction LimitedMuskoka-Kawarthas, ONCloses Nov 5, 2026via MERXMechanicalElectricalView on official portal →
- Bélanger Salach ArchitectureNortheast, ONCloses Nov 5, 2026via MERXMechanicalView on official portal →
- MetrolinxSouthern OntarioCloses Nov 6, 2026via MERXMechanicalView on official portal →
Ross Building Elevator Modernization
17 days leftYork UniversityToronto, ONCloses Nov 6, 2026via MERXMechanicalView on official portal →Northrop Frye Hall Elevator (VUOP26003)
31 days leftVictoria UniversityToronto, ONCloses Nov 20, 2026via MERXMechanicalView on official portal →Mechanical Contractor Services Source List
639 days leftDefence Construction Canada - Ontario RegionKingston-Pembroke, ONCloses Jul 20, 2028via OntarioProcurementSource list: Prequalification: suppliers apply to join the buyer's list, and the buyer later invites suppliers on it to bid.
MechanicalView on official portal →Mechanical Contractor Services QRT Source List
934 days leftDefence Construction Canada - Ontario RegionKingston-Pembroke, ONCloses May 11, 2029via MERXSource list: Prequalification: suppliers apply to join the buyer's list, and the buyer later invites suppliers on it to bid.
MechanicalView on official portal →
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Frequently asked questions
- Where do Ontario mechanical (HVAC & plumbing) tenders come from?
- Public procurement portals — MERX, CanadaBuys, and municipal portals like the City of Toronto, plus municipal sites. Cornerstone tags each posting by trade, so this page shows the Ontario work tagged mechanical (HVAC & plumbing). Each listing links to the official source.
- Is it free to see open mechanical (HVAC & plumbing) tenders in Ontario?
- Yes — browsing is free and needs no account. A free Cornerstone account scores these tenders to your trade, geography, and bonding capacity, and drafts a compliance-aware proposal for the ones you pursue.
- How is a tender classified as mechanical (HVAC & plumbing)?
- Cornerstone reads each posting's scope from its title and description and tags the trades involved. This list is the Ontario tenders tagged mechanical (HVAC & plumbing); many tenders span several trades, so always confirm the full scope in the official documents.
Listings aggregated from public procurement portals; each links to its official source. Trade tags are Cornerstone’s classification of each posting’s scope — always confirm the full scope in the official tender documents. General information, not procurement advice.