LWT: Nest Learning Thermostat 2.0

Buy Nest Learning Thermostat 2.0 from Amazon

This is a new series of articles called LWT, or Living With Technology. These won't neccesarily be reviews per se, but rather a look at day-to-day usage of technology in our lives with real world scenarios and numbers. The first installment of these articles will be on the Nest Learning Thermostat 2.0.

Let's just get it out there, the Nest Learning Thermostat is a very cool device, and a very practical one at that. Nest manages to take something as boring as a thermostat and turns it into a beautiful, connected device. The real beauty of it is that it does so much more than just look good, it serves as an energy saver which translates into utility and money savings. So here's the question: Does it save money? In my scenario, yes, and I'm well on my way to saving more.

Here's our scenario: we bought a new house near Boise, Idaho in 2011 with 2500 square feet, four bedrooms, and standard thermostat in the stairwell. My wife and I have three kids with a fourth on the way. That last bit plays a role in my monthly energy savings.

First off, the Nest retails for $249, so it's not too hard to calculate where the savings break-even point is. We bought and installed our Nest in June 2014. This is how are current savings so far have been calculated:

$0.079675	2013	2014	Difference	Savings
June kWh	842	880	-38	-$3.027650
July kWh	1386	880	506	$40.315550
August kWh	1604	1478	126	$10.039050
September kWh	1670	960	710	$56.569250
October kWh	889	539	350	$27.886250
Total	6391	4737	1654	$131.782450

According to the numbers, we are already slight more than halfway to having the Nest pay itself off. Here's what I think contributed to our overall savings.

1. Lock - This is where I learned how much our kids mess with things and the thermostat was no different. With the Nest, you can lock in a certain temperature range so that if the kids mess with it the Nest will not go outside of those bounds. I most certainly could not do this with my old thermostat. Gone are the days of the "mystery" temperature spikes and drops.

2. Schedules - This is an area that really shines for the nest. This is ultimately what prevents some of the wasteful cooling in the summertime (I've really only had it for warm weather seasons). Instead of just leaving it at a constant 70 degrees the whole winter, whether people were home or not, you got exactly that, 70 degree all summer long. Here's the thing though, during the middle of the day is when most of us weren't in the house anyways, but the old thermostat would work hard to bring those temperatures down to 70 degrees all day long. This is really is quite wasteful. There's really no better way to explain it than by showing our schedule during the summer which my wife said she didn't even notice (in other words, worked for her):

3. Auto-Away - This is one of the neatest features and one that worked rather well. The long and short if it is that the Nest determines when no one is home and will simply shutdown the unit all together. This once proved incredibly useful when we left on a trip and I had forgotten to turn it off. While not perfect, it definitely proved useful.

4. Remote Access - Really, having remote access to your thermostat is quite nice and really how I set my schedule. It let's you monitor, adjust, and set schedules in real time since the thermostat is connected via your home Wi-Fi. My wife likes to make small adjustments in the middle of the night and can do it without having to get up  of bed at all (or "Honey, can you get up and go change the thermostat for me?"). It's really quite nice to have that kind of control over the thermostat to ensure that you're saving money.

At the end of the day, I am already saving money and halfway toward the Nest paying itself off. It looks good, is fun to play with, and money savings also translate into energy efficiency and reducing waste. In my mind, the Nest is a win-win-win proposition.

Do any of you have a Nest Learning Thermostat? What are your savings if you do have one? Post your comments, questions, and thoughts below!