Tony Fadell: The Nest Thermostat Disrupted My Life

Tony Fadell: The Nest Thermostat Disrupted My Life
spectrum.ieee.org

That is first world problems hall of fame material right there!

But a great origin story for the Nest regardless.

For those unaware, the majority of homes in the UK have a gas boiler central heating system with TRVs on each radiator. This means that you end up with two competing temperature control systems in your home, which result in some rooms regularly being too cold/hot, it literally worse than have no central thermostat.

We now have the Nest set to about 5deg higher than we want, then have all the TRVs set to what we want each room to be.

In our last house we had the Tado system with “smart” electric TRVs, you would think that would solve the problems, but it was flaky, noisy and very expensive.

If I was doing it again I would get whatever the cheapest boiler controller with remote (internet) control I could find. But then I would probably not be putting in a gas boiler again, I'm hoping that by next time we need to overhaul a heating system heat pump systems have dropped in price in the UK.

I'm sure that in countries where people tend to have forced air HVAC systems these thermostats make a lot more sense. And I do love the industrial design, it is a "beautiful" thermostat.

We got a Nest thermostat for free as part of a SolarCity solar panel installation, and I spent months fighting with it to try and make it do what I told it. The Nest has a motion sensor on it, which is how it determines whether to turn on the energy saving mode - if it senses that you're home it will run at the set temperature, otherwise it will disobey your commands and go to the configured energy saving temperature. There were 2 problems with this, one universal and one application-specific: first, if you live in anything other than a small apartment your thermostat may be in a different room from you. In our 2-story house, the Nest thinks nobody is home unless you're specifically in the living room. The 2 2nd-floor bedrooms, the 1st-floor bedroom, the kitchen, the basement, the dining room, and the 1st-floor office all don't count. In our house specifically the thermostat was installed behind a wall-mounted TV, which only makes things worse - even if you're in the living room, the Nest thinks nobody is home unless you're actively playing with it.

Trying to make the Nest ignore whether you're home and disable the eco mode is an exercise in futility. I found a setting to disable eco mode, but the house was still never the temperature we set it to. When I checked the thermostat I saw the green leaf icon, indicating that the Nest completely ignores the setting that disables eco mode. When I called Nest support, they couldn't figure out what was going on either. The only way I could get it to function semi-reasonably was to manually set the eco mode temperature to the temperature we actually wanted the house at, which means that you have to set the temperature twice to actually set the temperature.

The idea of a thermostat that tries to save power automatically is great, but it falls apart when you rely on a single motion sensor to determine if an entire house is occupied. This bad assumption was a letdown, but the fake setting to disable eco mode turned me off of Nest completely.