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I Hesitated at This Thermostat's Price Tag, but It's Paying for Itself by Cutting My Energy Bills. Here's My Experience

CNET's key takeaways $250 for a smart thermostat may sound like a tough deal, but mine is set to pay for itself this summer thanks to lower heating and cooling payments. Automated Eco Modes make energy saving easy, even if you don't have time to plan out your schedule. Local utility rebates may also help make the thermostat more affordable. My Nest Learning Thermostat Gen 4 is astonishingly beautiful -- I've had people stop in my hallway just to look at the shifting rain and sunset animations. But that beauty, and all the smart features inside, is pricey: At around $250, it's one of the most expensive smart thermostats I recommend. So why take the plunge? Because Nest's Eco modes are so effective, my Nest smart thermostat is set to pay for itself this summer through electricity savings -- and I barely had to do anything except set it up. Here's how it all works, and why I'm glad I kept this Nest smart thermostat around. Read more: One Tiny Gadget Is the Unsung Hero of Today's Smart, Energy-Saving Home My experience with the Nest Learning Thermostat 4th-gen A Nest Thermostat showing lightning. Google Nest With a larger dial than ever, the Nest Learning Thermostat 4 is well-suited to showing off, both aesthetically and with data-backed insights on indoor and outdoor temperatures, humidity and more. My favorite customization is putting the outside weather at the forefront of the display, which shows moving weather graphics that capture the current state of the skies, from falling snow to twinkling stars. Google's research indicates people save around 10% to 15% on their energy bills with a smart thermostat, which works out to an average savings of $132 to $145 per year. Nest's reports help you chart savings and troubleshoot energy problems. Tyler Lacoma/CNET Those numbers reflected my results fairly well. From early fall to the colder winter months, I saved around $10 to $15 per month with Nest's tweaks and by balancing my electricity usage with less costly natural gas heating. As the months warm up that number is growing higher, and I expect to save around $20 per month in the summer heat -- enough to pay for my thermostat sometime this year. After that, it's all gravy. Smarts behind a pretty face Nest Thermostat 4th-gen showing app controls, sensor settings and more. Tyler Lacoma/CNET Given permission, the thermostat learns my habits and adjusts heating and cooling levels in response. Auto-Eco mode, for example, will turn the thermostat down automatically if it senses there's no activity in the house, which saves more money. Adaptive Eco will take care of the details for me, while Eco Hold will stick to a money-saving temperature that I choose manually. The Auto-Scheduling function does something similar, since it learns how I adjust the thermostat throughout the day and mimics my comfort preferences over time so I don't have to keep tweaking the settings. Google Home makes it easy to apply weekly schedules in moments. Tyler Lacoma/CNET Adjust the temperature manually at any time and when you see the green leaf icon appear, you'll know you're in savings mode. That makes it easy to adjust on the fly when the temperature feels about right, but you'd like to squeeze more savings out of the thermostat. Nest's Eco Modes also generate reports so I can see monthly progress and note any sudden problems or unexpected energy use. If there's a strange jump in energy use, the scheduling may be off, or you may be using electricity-hungry devices too much (my space heater and I are guilty of this). There's also a gamified "leafs" competition against other users that I don't care much about, but it's there for those interested. Satellite sensors and other ways to save Thermostat satellite sensors are one of the best inventions for home heating. Tyler Lacoma/CNET My Nest model also came with a satellite sensor, a little white puck that wirelessly transmits the temperature where it's placed to the thermostat. I can tell the Nest Learning Thermostat 4 to turn on or off based on its own built-in readings, on the readings of the satellite sensor, or a combination of both. Sensors like these help thermostats be more accurate based on where you actually spend time. For example, if I'm going to be spending the evening in a movie session at my TV or computer, I can bring the sensor along and when those heat-exhaling electronics heat up my personal space, the thermostat will take that as a sign to shut off early. The Nest thermostat smart home integrations are very limited, but that does make it easier to set up. Tyler Lacoma/CNET Then there are the peak hours programs, under names like Peak Perks, Rush Hour Rewards, Nest Renew from Google and other labels that indicate a partnership with utility companies. If your local utility supports these programs, you can join up and your Nest thermostat will make additional small changes throughout the day, avoiding the often-pricier peak hour energy use when possible. You give up some control of your thermostat with programs like these, which may displease some users, but it does enable you to save more. Many energy providers will also offer bonuses or rebates you can use to recoup the cost of an expensive thermostat even faster. A quick note about setup: If you're worried about installing the thermostat in your home, there's not much to fear from the process. I have a full guide here, but as long as you practice electrical safety and snap a picture of your current thermostat wiring, setting up the Nest Thermostat Gen 4 and getting it connected to Wi-Fi shouldn't be a problem, especially with Google Home app walkthroughs. The specs for the Nest Learning Thermostat 4th-gen Diameter: 3.9 in (98 mm) Depth: 1.1 in (29 mm) Weight: 5.7 oz (161.8 g) Display: 2.7 inch (68 mm) diameter circular liquid crystal display (600 x 600 pixels) Sensors: Soli sensor for Motion Sense, Temperature, Humidity, Ambient light Power consumption: Less than 1 kWh/month Power source: HVAC system wiring C (common) Wire: Not required Connectivity: Wi-Fi 802.11n (2.4 GHz / 5 GHz) HVAC system compatibility (Check your Nest compatibility here): Most 24V systems, including gas, electric, oil, forced air, heat pump, and radiant. It can control: Heating 1, 2, and 3 stages (W1, W2, W3); Cooling 1 and 2 stages (Y1, Y2); Heat pump with auxiliary and emergency heat (O/B, AUX, E); Fan (G, G2, G3); Power (C, RH, RC); Humidifier and dehumidifier (HUM, DEHUM); Ventilation (VENT). Smart home: Works with Google Home and Matter Warranty: 2-year standard for retail, 5-year standard for HVAC Pros Certifications: Energy Star-certified CNET's buying advice Nest's thermostat is one of the best high-end models I've seen. Tyler Lacoma/CNET It turns out a $250 to $280 smart thermostat isn't such a tough sell when I can see how mine will pay for itself in just about a year. It offers a plethora of energy-saving modes that users can pick from to rack up monthly savings -- most of them automated without requiring tinkering or calculators. I've even seen it available with rebates and free installation to speed up that payoff date. While Nest's circular thermostats have always had a flair for the dramatic, the Gen-4 model blows away the competition with a larger design that makes the most of its beautiful LED lighting and presence sensing to light up whenever someone walks past. The bright green leaf icon always shows instant savings for those who don't want to dive too deep into app management. Those who do want to explore the app will find settings for seasons, learning behaviors, weekly schedules and lots more.