Callidus Engineering
Experienced Engineers | Making Buildings Work Callidus Engineering is a professional engineering firm with offices located in London and Kingston, ON.
We provide mechanical and electrical engineering services to an ever expanding group of clients in Canada. Our mission is to provide an excellent engineering product coupled with exceptional customer service. The company goal is to develop and maintain a strong profile in the mechanical and electrical consulting engineering field. To this end, we are committed to the growth and development of our
07/30/2026
The truth was out there, and last month our Kingston team went looking for it through Improbable Escapes’ Kingston Conspiracy.
Downtown Kingston became the setting for an extraterrestrial mystery as some of our Kingston team moved from landmark to landmark, decoding clues, comparing theories and putting their collective problem-solving skills to work. Every stage demanded close observation, clear communication and a little creative thinking.
The team cracked every riddle before time ran out and escaped with the truth intact. This outing brought everyone together outside the office for an afternoon of teamwork, friendly pressure and a very unconventional tour of Kingston’s beautiful downtown and waterfront.
07/23/2026
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.
07/21/2026
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.
07/14/2026
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.
07/01/2026
Happy Canada Day from all of us at Callidus Engineering.
Wishing our clients, partners, and communities across Ontario a safe and relaxing holiday.
06/23/2026
Deer Ridge Point by Tricar continues to take shape in Kitchener’s Deer Ridge neighbourhood, bringing new premium rental suites, commercial space, and resident amenities to a growing area near Sportsworld Crossing.
Our team was on site last week checking on progress as construction continues. For a high-rise residential building like this, the mechanical and electrical work supports far more than the systems hidden behind walls and ceilings. It helps create the day-to-day comfort, safety, and reliability residents expect in their suites, shared spaces, and amenity areas.
From comfortable living spaces and well-lit common areas to secure building access, resident lounges, fitness spaces, outdoor terraces, and the infrastructure that supports modern connected living, thoughtful M&E design plays a major role in how a building feels and functions once people move in.
06/16/2026
Callidus Engineering recently attended and sponsored the 2026 Kingston Climate Summit at St. Lawrence College, joining people and organizations from across Kingston and the surrounding region for two days focused on climate action, resilience, and practical sustainability.
Presented by ICLEI Canada, the City of Kingston, and Sustainable Kingston, this year’s summit centred on the theme “Shaping Our Future Together.” The event brought people together for panel discussions, workshops, hands-on learning, and conversations about the work already underway to reduce emissions and build a more sustainable future for Kingston.
Representing our team were Derek Reid, Principal in our Kingston office, and Sofia Lancheros, Mechanical Designer and member of our energy modelling team. Their attendance connected naturally with the work Callidus does every day, helping clients make practical, technically grounded decisions around building performance, energy use, and long-term sustainability.
That work is already happening here in Kingston. Callidus recently supported the City of Kingston’s Net Zero Energy strategy through energy audit work across nine municipally owned buildings, helping assess opportunities for long-term sustainability, energy efficiency, and greenhouse gas reduction.
06/09/2026
After visiting Sioux Lookout last month, our own Luke Reist was back on the road last week, this time in Estevan, Saskatchewan, where Callidus Engineering has been working with SDI Canada on the modular MRI suite addition at St. Joseph’s Hospital.
Projects like this involve a lot more than setting a modular unit in place. Our team’s mechanical and electrical scope has included site-related design, modular building coordination, internal renovation work, chiller coordination, and the tie-ins required to connect to the existing hospital infrastructure; plumbing, medical gas, fire alarm & sprinklers, power distribution, communications, nurse call, and access/security.
Check out the latest photos from last week as the construction coordination continues to come together. The modular building is in place, the chiller has been started up, and the interior renovation work is moving toward a completed diagnostic imaging space.
Thank you to Luke for representing our team on site, and to SDI Canada for continuing to bring us into projects that help expand health care access in the communities that need it.
05/26/2026
Construction is continuing on the new Lambton College Residence in Sarnia, where our team was back on site again last week, getting a look at the mechanical and electrical systems as they’re coming together. The building is taking shape now!
Once complete, this five-storey residence will add 300 student beds and create new spaces that support day-to-day campus life, including study areas, lounges, fitness space, a café, and outdoor amenities. For students, that means more opportunity to live closer to where they learn. For the broader campus community, it means another step toward a more complete and connected student experience.
Student housing is about more than adding beds. It helps shape how students move through campus, build routines, access support, and feel connected to the place where they are studying
05/14/2026
Our London team took some time away from the office late last month for an afternoon of bowling at London’s famous Fleetway Bowling (An amazing place that we’ve had the honour of doing some work on!).
There was plenty of friendly competition on Lane 17, with Peter putting up the top overall score across three games and Sean close behind with a strong showing of his own. Owen and Russ kept the pressure on, but the final scoreboard suggests a rematch may already be in order.
Outside of the scores, it was a good chance for the team to spend time together away from the office, trade a few laughs, and enjoy a well-earned break from project work. The team that plays together wins together!
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1385 North Routledge Park Unit 9
London, ON
N6H5N5
Opening Hours
| Monday | 8:30am - 5pm |
| Tuesday | 8:30am - 5pm |
| Wednesday | 8:30am - 5pm |
| Thursday | 8:30am - 5pm |
| Friday | 8:30am - 5pm |