Hydro-Québec’s Hilo Thermostats Malfunction, Leaving Family Without Heat
A family in Quebec experienced a prolonged period without heating due to a malfunction with their Hilo smart thermostat, a product offered by Hydro-Québec. The incident highlights potential vulnerabilities in smart home technology and raises questions about reliance on automated systems for essential services.
The family, who wished to remain anonymous, reported that their heating system, controlled by the Hilo thermostat, stopped functioning on February 9, 2026. Despite repeated attempts to manually override the system, they were unable to restore heat to their home. The thermostat, designed to optimize energy consumption and offer savings through Hydro-Québec’s Rate Flex D program, instead left the family in a tricky situation during cold winter weather.
Hydro-Québec’s Hilo smart thermostats are offered at no cost to customers and are intended to automate temperature settings, reducing electricity use during peak demand. The program allows Hydro-Québec to manage consumption during periods of high demand, potentially up to 30 events per winter, for a maximum of 120 hours. However, the recent incident demonstrates the potential for disruptions when the system malfunctions.
The Hilo system, when connected to Hydro-Québec’s Flex D rate, offers lower electricity prices for most of the winter, with higher prices during peak demand events. Hilo-compatible thermostats, including models from Mysa and Sinopé, allow remote control and participation in these peak demand events. The aim is to aid customers save up to 20% on their winter electricity bill through automated management and other energy-saving measures.
According to reports, Hydro-Québec was eventually able to remotely reset the thermostat, restoring heat to the family’s home after several days. The company has not yet released a statement regarding the cause of the malfunction or steps being taken to prevent similar incidents in the future. The incident comes as smart thermostats, like those offered by Mysa, gain popularity as tools for energy management and demand response programs.
This situation underscores the importance of backup heating solutions and the require for robust customer support systems for smart home technologies. The growing adoption of smart devices for critical home functions necessitates careful consideration of potential risks and the development of reliable fail-safe mechanisms.
