THE GOOGLE-OWNED NEST THERMOSTAT encountered a bug in its internet-connected controller that forced the system offline.
Cold and angry customers took to social media to complain about the problem in the early hours of Friday morning, some saying that the thermostat was offline and wouldn't connect even after several resets.
Nest has since reported that it is aware of the fault and has fixed it for "99.5 percent" of customers.
It turns out that a dodgy software update forced the £200 thermostat's batteries to drain and rendered the device incapable of controlling the temperature. Nest suggested following a nine-point guide to reset the thermostat, including recharging it, and said that it was preparing a solution.
"We are aware of a software bug affecting some Nest Thermostat owners. In some cases, this may cause the device to respond slowly or become unresponsive. We are working on a solution that we expect to roll out in the coming weeks," the firm said in a statement, without mentioning how many were affected.
"Woke up to a dead Nest and a very cold house. Not good when you have a baby sleeping," a user wrote on the Nest internet forum.
This isn't the first time Nest has let people down. The firm sullenly ignored the UK's tiny leap into the future last year and failed to update to UK summertime, meaning that some people woke up cold, or warm, depending on how they have their heating set.
Nest is supposed to take the admin out of running one aspect of your house and did not on this occasion, and customers flung themselves at the support pages with their complaints.
"The switch to BST seems to have confused my Nest. I have a manual schedule set-up, auto schedule is disabled and the Nest didn't come on at the new time this morning," said one user.
"They know exactly who owns a Nest thermostat and is in the UK because we have to register to use the product."
Another complaint suggested that some customers had to challenge the very idea of Nest. "I have auto schedule on and mine just hasn't changed the time. I've had to manually turn the heating on," said one. µ
The mighty fall in the Fog of War
Will enable dedicated data rates at more than 10,000 megabits-per-second
Delta Airlines and GE have an app for that
The PC equivalent of Slow TV