CN Tower

Lower Observation Level

The CN Tower's Lower Observation Level was completed and unveiled in January 2026, as part
of the attraction's 50th anniversary celebrations.
The refurbished area comprises 10,600 square feet, including both indoor and outdoor viewing areas, a
glass floor, stairwells, washrooms, and the SkyPod elevator lobby.

The project was designed to seamlessly extend the recently renovated Main Observation Level 3 aesthetic down to Outdoor Observation Level 2, creating a cohesive and elevated visitor experience.

This renovation marked the first major upgrade to Level 2 since the Tower opened in 1976. HH Angus provided comprehensive mechanical, electrical, lighting, and communications engineering services as part of the transformation.

Mechanical
Scope included the complete refurbishment of existing washrooms, the addition of a new fully accessible washroom, and modifications to the HVAC systems to accommodate the new slatted ceiling design and updated spatial configuration.

Electrical
Work included upgrades to electrical distribution systems and coordination of power requirements for sophisticated new audiovisual installations. LED linear lighting was integrated along the perimeter core walls, and major infrastructure upgrades were implemented to accommodate a future perimeter heated glass system.

Lighting
A new lighting design was developed throughout the space, including exterior colour-changing LED ceiling lighting at the Outdoor Observation Level. Perimeter lighting creates the Tower’s signature exterior glow, enhancing its nighttime presence. Emergency lighting systems were also upgraded as part of the project.

Communications
The project included new horizontal cabling infrastructure to support enhanced IT, AV, and security systems. Security enhancements included the deployment of new fixed and PTZ cameras to improve interior and exterior monitoring and support life safety objectives. New fibre optic cabling was installed, along with perimeter Color Kinetics lighting controls that contribute to the Tower’s distinctive exterior illumination.

SERVICES
Mechanical Engineering | Electrical Engineering | LIghting Design | Communications Design

PROJECT FEATURES
Size: 10,600 ft2 | Status: Completed January 2026 as part of the Tower's 50th Anniversary celebrations

LOCATION
Toronto, Ontario

KEY SCOPE ELEMENTS
Refurbishment of client amenities, HVAC, spatial configuration, electrical distribution system including future capacity for heated glass, new cabling infrastructure to support IT, AV, security, new lighting design throughout, perimeter lighting; exterior illumination

The visitor experience

The renovation creates a cohesive and elevated space, enhancing the new visitor activity options.

Air Canada

20 Queen Street - Office Fitout

Air Canada’s downtown Toronto office encompasses the entire 26th floor at 20 Queen Street West, with a total area of 20,000 ft2, including the elevator lobby.

For Air Canada's recent renovation, HH Angus provided mechanical and electrical engineering and ICAT design services.

The project featured high-end finishes in the reception area, café, a fully accessible washroom, integrated advanced lighting controls and multiple AC units to enhance occupant comfort and energy efficiency. The result is a modern, high-performance space custom tailored to the client’s needs.

SERVICES
Mechanical Engineering | Electrical Engineering | ICAT Design

PROJECT FEATURES
Size: 20,000 ft2 | Status: Completed 2025

LOCATION
Toronto, Ontario

KEY SCOPE ELEMENTS
Complete Interior fitout including elevator lobby | Advanced lighting controls | AC units

Opercule Urban Fish Farm

The Opercule Fish Farm project is a pioneering initiative in the heart of Montreal, representing the first urban fish farm in Canada. This innovative project is based on a unique approach to fresh fish production, combining cutting-edge technology, respect for the environment and a local supply network.

Opercule annually raises 25 to 30 tonnes of Arctic Char, a fish species highly prized by Montreal restaurants and residents, and raised without the use of chemicals, hormones or antibiotics.

The primary goal for the Opercule Fish Farm was to create an eco-friendly, sustainable fish farm with a low impact on the environment and providing excellent living conditions for fish. HH Angus worked closely with the client to understand their unique and ground-breaking vision and was able to design innovative solutions tailored to this one-of-a-kind project. The project’s design also stands out for its ability to produce fresh fish locally in a non-coastal city.

This model of aquatic urbanism fits perfectly into a context where demand for local, sustainable products is growing. Working with the HH Angus design and engineering team, Opercule is meeting Montreal’s appetite for Arctic Char by supplying top-quality fish while reducing the usual carbon footprint associated with transporting seafood from coastal regions.

The project's innovative design and short-supply chain production model allow Opercule to raise high-quality fish in an urban environment in response to a growing local demand for sustainable food products. Fish swimming in the morning can be on diners’ plates the same evening, frequently delivered to restaurants by e-bikes to further reduce the product’s carbon footprint.

SERVICES
Prime Consultant | Mechanical Engineering | Electrical Engineering

PROJECT FEATURES
Canada’s first urban commercial fish farm | Sustainable production processes | Reduced carbon footprint compared to traditional fish farming methods | Closed circuit production loop

LOCATION
Montréal, Quebec

KEY SCOPE ELEMENTS
Design and engineering to enable production of food fish in a dense urban environment, utilizing municipal services infrastructure| Production of technical reports for provincial Authorities Having Jurisdiction, due to uniqueness of the project | Custom design solutions to respond to changing operational conditions

Enabling production at scale

No design references or construction expertise existed for this pioneering enterprise, and the client placed their trust in HH Angus’ ingenuity and adaptability to deliver the vision.

The project’s key technical innovation was the development of the Recirculating Aquaculture System (RAS) system - the first of its kind in Quebec - which allows fish to be produced in a closed circuit, from egg to table.

From the outset, we worked very closely with Opercule to thoroughly understand the challenges and goals. The client had a strong vision for their new company, were deeply committed to its success, and actively involved in the project’s technical aspects. One of the owners brought a background in consulting engineering, and this made our collaboration highly productive.

Reducing environmental impact

The primary goal for Opercule was to create an eco-friendly, sustainable fish farm with a low impact on the environment and providing excellent living conditions for fish.

The RAS process is a sustainable model that significantly reduces the environmental footprint of the operation by reducing not only water but alsoenergy consumption compared to traditional aquaculture. The system minimizes the use of these precious resources, a crucial factor in an urban environment. By recovering, filtering and reusing water, the farm significantly reduces water consumption compared to traditional fish farming methods, which are often very water intensive. The system allows the company to reduce water consumption by 100 – 200 times compared to traditional systems.

In terms of waste management, Opercule uses environmentally friendly techniques to treat the organic and biological waste generated by production, helping to reduce overall environmental impact. The project also promotes use of sustainable materials for the construction and fitout of the facilities, reducing the carbon footprint of the entire system.

In addition, the absence of chemicals, hormones and antibiotics in fish production ensures no soil or water contamination. This approach helps preserve local ecosystems and eliminates the risk of pollution.

Engineering design challenges

The complexity of the Opercule project stems from a number of technical and logistical factors. The creation of an urban fish farm requires a completely unique design adapted to a dense urban environment. The design of a water recirculation system, intended to ensure the well-being of the product from the egg stage to the delivery of the fish, required the development and refinement of innovative technologies in filtration, nutrient management, and optimization of living conditions in confined environments.

Challenges included managing water quality, which is essential for fish health, as well as creating an optimal environment for rearing Arctic Char, known to be a delicate species. This challenge involved the creation of autonomous systems to maintain constant temperatures and pH levels, without the need for chemical treatments. In addition, bio-safety management was a priority to avoid contamination.

During the operational phase, it was discovered that the heat generated by the fish—even though they are cold-blooded—had been underestimated. This required adjustments to operational conditions to maintain stable water temperatures. Despite this challenge, our close collaboration with the client ensured these modifications were implemented effectively, showcasing the team’s problem-solving abilities.

Novartis Pharmaceuticals Canada Inc.

755 Berri Street, Montreal

Novartis Canada needed to rethink their physical work
space to better support their focus on innovation. They
relocated their headquarters from Dorval to downtown
Montreal close to transit, amenities and, most importantly, many of their healthcare and technology partners.

The project involved the fit-up of a two-storey, 32,291 ft2 commercial office space. Our design services included on-site verification of existing mechanical, electrical and communications systems, as well as reviewing the integration of the lighting design. The new space has 100 unassigned workstations and 21 meeting rooms, which range in size to fit anywhere from four to 10 people, are equipped with digital touchscreen reservation system.

HH Angus assessed the mechanical and electrical base building systems and coordinated communication requirements with the client’s IT representative. Final deliverables comprised mechanical, electrical, and communications drawings and specifications. The deliverables were executed in English and French for permit, tender, and construction.

While doing the project, Gensler, the client, requested additional services to accommodate an expedited and compressed schedule. As a solution to this, HH Angus mobilized additional designers in the various disciplines and added assistance of internal project management staff. Moreover, more meetings were set to better coordinate the design. Overall, HH Angus, as part of their role of executing the Gensler’s goal, assimilated into the client’s mission in order to successfully execute the project.

SERVICES
Electrical Engineering, Mechanical and Communications Drawings and Specifications

PROJECT FEATURES
The project involved the fit-up of a two-storey, 32,291 ft2 commercial office space | Status: Completed 2023

LOCATION
Montreal, QC

KEY SCOPE ELEMENTS
The deliverables comprised mechanical, electrical, and communications drawings and specifications.

TELUS

Len Werry Building Turbine Replacement

The TELUS Len Werry Building in downtown Calgary houses offices, computer facilities, toll switch equipment, and local switching equipment for a major toll complex.

The project involves the replacement of the building's existing turbines with new reciprocating diesel generators and redundant synchronization switchboards in a new penthouse on top of the building.

HH Angus is providing electrical engineering services to support upgrades to the electrical distribution system related to the installation of the new diesel generators.

SERVICES
Electrical Engineering

PROJECT FEATURES
Infrastructure replacement in occupied commercial tower | Status: Ongoing

LOCATION
Calgary, Alberta

KEY SCOPE ELEMENTS
Upgrades to electrical distribution system