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    • Gold 20 balloons hang from a decorated office doorway for a Callidus anniversary celebration.

      June, 2026

      Congrats on 20 Years Derek, Erica, and Dawn!

      Last week, our London, Kitchener, and Kingston offices celebrated three major milestones: Derek Reid, Erica Peckham[…]

      Countinue Reading >
    • Welcome session for the 2026 Kingston Climate Summit at St. Lawrence College, with attendees seated facing the stage.

      June, 2026

      Kingston Climate Summit 2026 at St. Lawrence College

      Presented by ICLEI Canada, the City of Kingston, and Sustainable Kingston, this year’s summit centred on the theme[…]

      Countinue Reading >

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    Callidus Engineering
    Callidus Engineering

    No, Callidus Engineering has not rebranded. Our graphic designer is simply on vacation, and the rest of us were left unsupervised. Questionable graphic design choices aside, our mechanical and electrical engineering work continues as usual. Proper branding returns next week. Buildings still need to work in the meantime. #EngineeringExcellence ...

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    Callidus Engineering
    Callidus Engineering

    Our team was on site last month checking on the three 1,000 MBH boilers, two new domestic hot water storage tanks and a lead/lag control sequence are coming together inside Western University’s Bayfield Hall Residence. Our team designed the upgraded plant with dedicated circulation pumps, a digital thermostatic mixing valve and new powered venting, creating a coordinated system built around reliable domestic hot water delivery. The real design challenge was keeping that hot water available while the old system made way for the new one. Construction was phased around an existing boiler providing temporary service as demolition, piping, venting, controls and electrical connections progressed around it. #EngineeringExcellence #LDNont #OntarioConstruction ...

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    Callidus Engineering
    Callidus Engineering

    Last week, our own Peter Ketelaars travelled to Clyde River, Nunavut, to see the new Nauttiqsuqtiit Multi-Use Facility nearing completion. Inside, the mechanical and electrical systems our team designed are coming to life: hydronic heating is operational, ERVs and ductwork are in place, plumbing fixtures and water storage systems are in use, and power, lighting, controls, and life-safety systems are nearing completion. Those systems will support a facility created to advance Inuit-led stewardship of Tallurutiup Imanga. With workshops, research and office space, a gallery, and food-preparation areas, the building will give local Nauttiqsuqtiit staff a dedicated base for their work and for sharing knowledge within the community. We are proud to have contributed the dependable building infrastructure behind that vision. Seeing it take shape on site is a powerful reminder of what thoughtful northern engineering can support when it is grounded in local priorities. #EngineeringExcellence #Nunavut #NorthernCanada ...

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    Callidus Engineering
    Callidus Engineering

    Happy Canada Day from all of us at Callidus Engineering.Wishing our clients, partners, and communities across Ontario a safe and relaxing holiday.#EngineeringExcellence #OntarioConstruction ...

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    Our London location1385 N. ROUTLEDGE PARK UNIT 9 LONDON, ON N6H 5N5 519-472-7640

    info@callidus.ca

    Our KINGSTON location4 CATARAQUI ST. UNIT 100 KINGSTON, ON K7M 1Z6

    613-900-0845

    Our KITCHENER location210-137 GLASGOW ST. KITCHENER, ON N2G 4X8

    519-340-1885