Ontario tenders · Mechanical (HVAC & plumbing)
Open mechanical (hvac & plumbing) tenders in Ontario
26 open mechanical (hvac & plumbing) construction tenders in Ontario right now, scanned daily from the official procurement portals and tagged by trade.
Updated September 4, 2026.
Open now
26
New in last 30 days
18
Closing soonest
- Superior-Greenstone District School BoardNorthwest, ONCloses Sep 4, 2026via MERXMechanicalView on official portal →
- Toronto Transit Commission - PCM OperatingToronto, ONCloses Sep 7, 2026via MERXMechanicalElectricalView on official portal →
Elevator Modernization – Hesperus
5 days leftHousing Services Corporation (HSC)Toronto, OntarioCloses Sep 8, 2026via BiddingoMechanicalView on official portal →Elevator Modernization - Hesperus
5 days leftHousing Services CorporationOntarioCloses Sep 8, 2026via MERXMechanicalView on official portal →- Department of the Environment (ECCC )OntarioCloses Sep 8, 2026via MERXMechanicalView on official portal →
- McMaster UniversityHamilton-Niagara Peninsula, ONCloses Sep 8, 2026via MERXMechanicalView on official portal →
HVAC Service Agreement
6 days leftTown of RenfrewOntarioCloses Sep 9, 2026via MERXMechanicalView on official portal →- City of TorontoToronto, ONCloses Sep 9, 2026via City of TorontoCivilMechanicalElectricalView on official portal →
- Waterloo Regional Health NetworkKitchener-Waterloo-Barrie, ONCloses Sep 10, 2026via MERXMechanicalView on official portal →
- JSCM CoOttawa, ONCloses Sep 11, 2026via OttawaMechanicalView on official portal →
P55SE26375-G60-392-Escalators Modernization
11 days leftToronto Transit Commission - PCM CapitalToronto, ONCloses Sep 14, 2026via MERXMechanicalView on official portal →- Queen's UniversityKingston, OntarioCloses Sep 15, 2026via BiddingoMechanicalView on official portal →
- St. Joseph's Healthcare HamiltonHamilton, OntarioCloses Sep 17, 2026via BiddingoMechanicalView on official portal →
Mechanical Millwright Services
14 days leftUniversity Health NetworkToronto, OntarioCloses Sep 17, 2026via BiddingoMechanicalView on official portal →RTF 2026-05 STEAM BOILER REPLACEMENT PROJECT
14 days leftQueensway Carleton HospitalOttawa, ONCloses Sep 17, 2026via OttawaMechanicalView on official portal →RFT 5685636049 — Parks, Forestry & Recreation
14 days leftCity of TorontoToronto, ONCloses Sep 17, 2026via City of TorontoMechanicalCarpentryInsulationCladdingGeneral ContractorView on official portal →- Vineland Research & Innovation CentreHamilton-Niagara Peninsula, ONCloses Sep 18, 2026via MERXMechanicalView on official portal →
26-21 Mechanical Street Sweeping 2027-2030
19 days leftMunicipality of Mississippi MillsOntarioCloses Sep 22, 2026via MERXMechanicalView on official portal →RFP 5660182540 — Parks, Forestry & Recreation
19 days leftCity of TorontoToronto, ONCloses Sep 22, 2026via City of TorontoCivilBridgeMechanicalElectricalStormView on official portal →- City of TorontoToronto, ONCloses Sep 22, 2026via City of TorontoCivilPavingConcreteStormMechanicalView on official portal →
- PCL Constructors Canada Inc.Ottawa, ONCloses Sep 22, 2026via MERXMechanicalView on official portal →
- Housing Services Corporation (HSC)Toronto, OntarioCloses Sep 24, 2026via BiddingoMechanicalView on official portal →
- Housing Services CorporationOntarioCloses Sep 24, 2026via MERXMechanicalView on official portal →
- Hopital MontfortOttawa, ONCloses Sep 28, 2026via MERXMechanicalElectricalView on official portal →
Mechanical Contractor Services Source List
686 days leftDefence Construction Canada - Ontario RegionKingston-Pembroke, ONCloses Jul 20, 2028via OntarioProcurementMechanicalView on official portal →Mechanical Contractor Services QRT Source List
981 days leftDefence Construction Canada - Ontario RegionKingston-Pembroke, ONCloses May 11, 2029via MERXMechanicalView on official portal →
Showing the 26 soonest-closing of 26 open mechanical (hvac & plumbing) tenders. Start free to see them all, scored to your profile →
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Frequently asked questions
- Where do Ontario mechanical (hvac & plumbing) tenders come from?
- Public procurement portals — CanadaBuys, MERX, Biddingo, the Alberta Purchasing Connection, SaskTenders, and municipal sites (BC tenders arrive via MERX and Biddingo). 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.