You're certainly right that they kicked Honeywell in the rear. After years of making the same damned device, they finally released an actually nice thermostat. In fact, I was recently in the market for a new thermostat which I could control on my drive home, or from bed, or whatever. After researching thoroughly, and I opted for Honeywell's latest touchscreen device (over the Nest v2 which has apparently been having a lot of problems).
I must say it's actually quite nice to use. I can put it in a mode where it does precisely what I want. Hold a temperature until told otherwise, and let me choose that temperature from my desktop or iPhone from anywhere.
Such a mode so simple that the Nest refuses to allow it.
Nest can hold a set temperature like any other thermostat. It'll do so better than any other thermostat, in fact, by learning the efficiency of your heater and A/C so that it doesn't overshoot your targets, and takes into account whether the thermostat is in direct sunlight part of the day, and airflow in your house.
It can also be told to hold a temperature forever, to hold a threshold forever (cool if it gets above 75, heat if it gets below 60), you can set a detailed schedule manually, you can tell it to hold a temperature until a certain time, or you can tell it to just kick on the fan for the next X minutes without changing the temperature then turn back off.
Turning on/off auto-schedule is one click if you want that feature, like all its other learning features. I've never run into any kind of bug with mine. You can change the temperature it's holding at from your iPhone or desktop from anywhere, along with all its other settings.
> And the Nest doesn't have a Hold Temperature option, which is a feature even a $25 thermostat has. The final Nest deal-breaker for me is the +-3 degree temperature swing. If you set it to 72, it will keep the temperature between 69 and 75, a total of 6 degree swing, which sucks compared to the +-1 degree swing of the Honeywell.
That's a shame. He probably misled quite a few people into buying the Honeywell by being the top review. He admittedly never owned a Nest, and that's obvious in his comparison, as not a single point in it is accurate; one must wonder where he came up with them having no first-hand experience.
* If Nest isn't on a schedule (whether it's a manually set schedule or the "auto-schedule"), it's holding temp. Like every other thermostat.
* It is more sensitive than the Honeywell, not less; it kicks on at +1 degrees on AC mode, but -0.7 degrees on heat. If you really want, you can set fractional target temperatures too.
* He thinks Nest shows nothing on its display but the temperature, when it's actually a fully interactive computer. All the settings can be changed at the wall, not just using the app/website.
At least the number of Amazon reviews suggests Nest is outselling all the Honeywell wifi panels over 20:1 anyway.
Who knows? Maybe it was written by a Honeywell shill. Worked on me apparently.
I will note one other difference which helped sway me to Honeywell is the fact that the Nest requires a battery, while the Honeywell requires "bus" power. I actually didn't have a "C wire" set up before I installed mine, but it was trivial to climb into the attic and re-purpose the fan control wire to instead provide constant (24VAC) power.
Granted, changing thermostat batteries wasn't really at the top of my pet peeve list, but I did read that the Nest has the potential to suck batteries dry too quickly. Any opinion on battery life?
Nest uses your HVAC's power wire like other thermostats. There are no batteries to replace.
It has a permanent internal battery, charged by the power wire, which allows it to stay active in a power failure and to use more power than some systems provide when you're interacting with its screen. So there's no real difference between the Nest and the Honeywell in terms of power or installation except that the Nest has a built-in rechargeable li-ion backup battery.
Nest does have an internal battery than can be charge via a USB port if you ever need to. I bought my Nest used off Craigslist (substantial savings) and have never had any low battery issues. It's bus powered, but the battery smooths over power disruptions.
Honeywell has not licensed any technology to Nest.
There's nothing really fancy about a thermometer, humidity sensor, IR motion sensor and a bit of software anyway. Which is why Nest had no trouble identifying prior art to each of the patents Honeywell tried to assert (and made no offer to license). They carved their niche by being the only company that cared to make the most of some simple inputs and packaged them up in a way that looked different from the rest of the market. It's somewhat similar to the iPod/iPhone story.
I must say it's actually quite nice to use. I can put it in a mode where it does precisely what I want. Hold a temperature until told otherwise, and let me choose that temperature from my desktop or iPhone from anywhere.
Such a mode so simple that the Nest refuses to allow it.