Ontario tenders · Mechanical (HVAC & plumbing)
Open mechanical (hvac & plumbing) tenders in Ontario
25 open mechanical (hvac & plumbing) construction tenders in Ontario right now, scanned daily from the official procurement portals and tagged by trade.
Updated July 21, 2026.
Open now
25
New in last 30 days
18
Closing soonest
Plumbing Supplies
1 day leftThames Valley District School BoardLondon, OntarioCloses Jul 21, 2026via BiddingoMechanicalView on official portal →- St Clair College of Applied Arts and TechnologyWindsor-Sarnia, ONCloses Jul 22, 2026via MERXMechanicalView on official portal →
- Queen's UniversityKingston, OntarioCloses Jul 22, 2026via BiddingoMechanicalElectricalView on official portal →
- City of KingstonKingston, OntarioCloses Jul 23, 2026via BiddingoMechanicalView on official portal →
Elevator Emergency Communication System
3 days leftUniversity of TorontoToronto, ONCloses Jul 23, 2026via MERXMechanicalView on official portal →- City of TorontoOntarioCloses Jul 24, 2026via MERXMechanicalView on official portal →
- MetrolinxSouthern OntarioCloses Jul 27, 2026via MERXMechanicalView on official portal →
- Toronto, ONCloses Jul 27, 2026via City of TorontoMechanicalView on official portal →
- Toronto, ONCloses Jul 27, 2026via City of TorontoMechanicalView on official portal →
UPS for Chiller and Boilers
8 days leftPDS-BGISAll of National Capital Region, ONCloses Jul 28, 2026via MERXMechanicalView on official portal →- City of OttawaOttawa, ONCloses Jul 30, 2026via MERXMechanicalView on official portal →
RFT Legacy Recreation Centre HVAC Unit
10 days leftMunicipality of Lambton ShoresOntarioCloses Jul 30, 2026via MERXMechanicalView on official portal →- PCL Constructors Canada Inc.Ottawa, ONCloses Aug 4, 2026via MERXMechanicalView on official portal →
Emergency Mechanical Repair Services
16 days leftHamilton Health Sciences CorporationHamilton, OntarioCloses Aug 5, 2026via BiddingoMechanicalView on official portal →Modernization of the Elevator
17 days leftUniversité de HearstNortheast, ONCloses Aug 7, 2026via MERXMechanicalView on official portal →Sacred Heart School HVAC Upgrades
21 days leftThe Northwest Catholic District School BoardDryden, OntarioCloses Aug 10, 2026via BiddingoMechanicalView on official portal →Mechanical Contractor Services RFSQ
22 days leftHumber PolytechnicToronto, ONCloses Aug 11, 2026via MERXMechanicalView on official portal →- University of WaterlooOntarioCloses Aug 14, 2026via MERXMechanicalView on official portal →
- MetrolinxSouthern OntarioCloses Aug 17, 2026via MERXMechanicalView on official portal →
- La Cité CollégialeOttawa, ONCloses Aug 20, 2026via MERXMechanicalView on official portal →
(CP-626) UOHI ELEVATOR 55 UPGRADES PROJECT
31 days leftMohawk MedbuyBurlington, OntarioCloses Aug 20, 2026via BiddingoMechanicalView on official portal →- Department of Public Works and Government Services (PSPC)OntarioCloses Aug 27, 2026via MERXMechanicalView on official portal →
RFP 5660182540 — Parks, Forestry & Recreation
64 days leftToronto, ONCloses Sep 22, 2026via City of TorontoCivilBridgeMechanicalElectricalStormView on official portal →Mechanical Contractor Services Source List
731 days leftDefence Construction Canada - Ontario RegionKingston-Pembroke, ONCloses Jul 20, 2028via OntarioProcurementMechanicalView on official portal →Mechanical Contractor Services QRT Source List
1025 days leftDefence Construction Canada - Ontario RegionKingston-Pembroke, ONCloses May 11, 2029via MERXMechanicalView on official portal →
Showing the 25 soonest-closing of 25 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.