Ottawa firefighters respond to carbon monoxide leak in Centretown West high-rise

Ottawa Fire Services responded to a carbon monoxide leak on Champagne Avenue. Jan. 28, 2026. (Ottawa Fire Services)

Ottawa firefighters responded to a carbon monoxide leak at a residential high-rise in Centretown West on Wednesday afternoon.

According to Ottawa Fire Services public information officer Nick DeFazio, at approximately 3:25 p.m., an individual on the 25th floor of the 105 Champagne Avenue South building reported that their carbon monoxide alarms had been set off.

Crews arrived to find 35 parts per million of carbon monoxide on the 25^th floor of the building. DeFazio says some readings indicated that CO levels were as high as 65 parts per million.

Firefighters found that the source of the CO leak was a faulty HVAC unit.

A hazmat team was sent to the scene and began ventilating each floor of the building. Enbridge was also called to the scene.

DeFazio says the building did not need to be evacuated.

Paramedics were called to the scene but did not treat any patients.

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