HH Angus

HH Angus


DC power distribution and PoE (Power over Ethernet) Lighting, Wireless occupancy sensors for desks and washrooms, Wireless IEQ (indoor environmental quality) sensors, Wireless RF mesh network for IoT devices
LED ceiling fixtures - 2x2 troffer
SpacrNode, SpacrSwitch, SpacrSense-IEQ, SpacrSense-Occupancy, SpacrApp
HH Angus and Associates Ltd.
HH Angus Office Building. Commercial office building (25,000 sq.ft)
Toronto, Ontario
May 2020
CapEx: roughly 50%, OpEx: roughly 30%
HH Angus


H.H. Angus was founded in 1919 and today is one of Canada's larger private engineering firms, based in Toronto, Ontario. The company employs over 250 individuals consisting of engineers, technical specialists and project managers passionate about creating innovative solutions for their clients’ building needs. The space we were approached to help with was their office building space, consisting of approximately 25,000 sq/ft.


H.H. Angus explained to us that they were experiencing problems with temperature inconsistencies throughout the building, verifying problem areas in each of their HVAC zones, verifying air quality levels in general, controlling lighting based on occupancy as opposed to with a set timer, and monitoring desk occupancy. Additionally, they wanted to be able to track and control all connected devices with a single cloud-based, user-friendly platform.

Ensuring the comfort of their employees through the control of their workplace’s temperature and environmental quality was a large part of their request, but they also wanted a more energy efficient power system for LED lighting that they could automate and control based on data.


After analyzing the key problems and the space we determined that a combination of DC power distribution and POE coupled with key products from our Spacr lineup was the ideal solution.

Our DC power distribution technology specifically was very beneficial in improving the energy efficiency of their space, as it eliminated energy wasted from having an AC to DC converter connected to each of their LED light fixtures. You can read more about this in a blog post we wrote.

We also implemented IoT technology and digital twin software that allows them to track and control all of our devices in real time. Specifically, by implementing our SpacrSense occupancy sensors, we could track the availability of desks, boardrooms, and washrooms in real time. Additionally, our SpacrSense IEQ (Indoor Environmental Air Quality) sensors monitor the major data points crucial for determining environmental air quality and preferences in a building. For example, with these sensors, our client can monitor and control things like temperature, barometric pressure, relative humidity, ambient light levels, light colour temperature and more.

Our IEQ sensors specifically solved our client's unique problems by enabling the client to monitor and track any temperature discrepancies and swiftly identify problem areas within HVAC zones. Furthermore, with our occupancy sensors connected to each desk, we transitioned the client’s lighting automation system from being timer based, to occupancy-based.

We connected our SpacrApp to these sensors so that, simply put, all collected data could be monitored, tracked, and used as a guideline to make the H.H. Angus office building more energy efficient, and comfortable for employees.

Specifically, the SpacrApp allows our client to:

  • Automate lights to shut off if the area is vacant. This was the improvement to the timer-based system that our client was looking for
  • Track and control all their connected devices through a single cloud-based platform

Our system also provided H.H. Angus with other benefits such as:

  • Enabling them to dynamically rezone their lighting system via software
  • Wireless switches for lighting, that can be easily relocated

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We transformed their approximately 25,000 sq/ft. traditional office building into an interactive intelligent space. We installed various sensors, Power over Ethernet (PoE) lighting, and Digital Twin software.

Since implementing our solution, the client has experienced the ability to monitor and remedy any temperature discrepancies, leading to happier and more productive employees. In addition, the IEQ sensors also allow for them to monitor air and light quality. This also provides them with the potential to see returns from implementing daylight harvesting for LED lighting. The ability to Implement Demand Controlled Ventilation (DCV) and zone based HVAC control is now possible, with the data available from the sensors.

All things considered, they have been able to save energy costs, reduce emissions, increase the lifetime of their LED fixtures by implementing DC power distribution, and improve employee productivity and comfort.

See below for a breakdown of their energy savings:

CapEx Savings: roughly 50%
  • 50% savings versus traditional PoE
  • 50% savings versus traditional line voltage and controls

No conduit/mechanical protection needed for low voltage cable runs

OpEx Savings: roughly 30%
  • Roughly 20% reduction in energy consumption across lighting and HVAC
  • LED light lifetime extended to 100,000 hours (inherent benefit of DC power distribution)

HH Angus

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