So, three years ago I bought a smart thermostat, installed it and it didn't work. I called company who installed my AC/furnace to see what the issue was and I was told I needed the dreaded c-wire, and this upgrade would cost more than $600 - plus the thermostat. I accepted I would not be able to have a smart thermostat. But this past week, I was having my furnace serviced and asked the technician about it. He pointed me to this Sensi thermostat that does NOT require a c-wire, using batteries to maintain power and wifi connection. As soon as the tech left, I went on Amazon and ordered it. It was here the next morning and I installed it that day!
The install was extremely easy. You do need to download the Sensi smart app on your phone in order to do the install. The directions were clear and easy to follow. You create your schedule on the phone app. You can set different schedules so you can have your regular schedule and then vacation settings as a different schedule or weekday and weekend as separate schedules. You can set your Cool settings, Heat settings, or Auto settings.
If you have it set to Cool or Heat, it will function like a "dumb" thermostat in that it will only cycle on based on the Cool setting or Heat setting. But, if you have it set to Auto, you create your comfort window: Cool if the temp nudges above X, and heat if the temp drops below Y without having to manually change the thermostat over from cool to heat or back. You can do as close as 2 degrees to keep the house very consistent.
The schedule has four scheduling windows, presumably for Waking, Gone to Work, Evening, and Sleeping. As you look at the app, the currently running schedule window is at the far right at the bottom of the screen, and the next schedule window is at the far left. If there is neither heating nor cooling occurring, you will see the app screen is grey. If it is cooling, the screen is blue, and if it's heating the screen is orange.
If you want the thermostat to plan ahead so that your house is at your desired temp AT the start of that schedule window, go to Scheduling and toggle on the "early start", otherwise, the thermostat will not kick on to adjust the temp until the actual start of that schedule window.
You can change the temp and set a temporary or permanent hold from the actual thermostat or from the phone. The temporary hold ends at the start of the next pre-scheduled time. You can also lock the thermostat so others cannot make adjustments to it without going through the phone app. The set temps (cool at and heat at) are in small circles at the right of the screen. The current room temp is the large center number. You can see in my pics that I have the app set to show the outside temp/weather (top right) as well as the inside relative humidity below the current room temp (as it is at the thermostat - if you have a humidifier in a room away from the thermostat, that room may have a much different RH than at the thermostat).
I've included pics so you can see the color differences and what the schedule looks like at the bottom of the screen. I also included pics of the thermostat on my wall - without and with the backlight on.
Overall, I am very, very pleased with this thermostat. It does exactly what I was hoping for. I just wish I knew 3 years ago there was an option that didn't require that c-wire. But, better late than never! I'll update if anything changes. But right now, I give it 5 stars.
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From the manufacturer
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| Sensi Wi-Fi Thermostat for Smart Home | Sensi Touch Wi-Fi Thermostat for Smart Home | Sensi Touch Wi-Fi Thermostat for Smart Home | Sensi Touch Wi-Fi Thermostat for Smart Home | |
| Power Source | Battery or C-wire | C-wire required | C-wire required | C-wire required |
| Dimensions | 5.875" x 3.75" x 1.0" | 5.625" x 3.4" x 1.17" | 5.625" x 3.4" x 1.17" | 5.625" x 3.4" x 1.17" |
| Wi-Fi Connectivity | 2.4 GHz | 2.4 GHz | 2.4 GHz | 2.4 GHz |
| Remote Access | ✓ | ✓ | ✓ | ✓ |
| Usage Reports | ✓ | ✓ | ✓ | ✓ |
| Energy Star Certified | ✓ | ✓ | ✓ | ✓ |
| Smart Alerts | ✓ | ✓ | ✓ | ✓ |
| Touchscreen Color Display | ✓ | ✓ | ✓ | |
| Backlight | ✓ | ✓ | ✓ | ✓ |
| Keypad Lockout | ✓ | ✓ | ✓ | ✓ |
Videos
Page 1 of 1Start OverPage 1 of 1
Videos for this product
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Emerson Sensi Wi-Fi Thermostat Review
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3 Things To Know Before Buying A Sensi Touch Thermostat
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So, three years ago I bought a smart thermostat, installed it and it didn't work. I called company who installed my AC/furnace to see what the issue was and I was told I needed the dreaded c-wire, and this upgrade would cost more than $600 - plus the thermostat. I accepted I would not be able to have a smart thermostat. But this past week, I was having my furnace serviced and asked the technician about it. He pointed me to this Sensi thermostat that does NOT require a c-wire, using batteries to maintain power and wifi connection. As soon as the tech left, I went on Amazon and ordered it. It was here the next morning and I installed it that day!The install was extremely easy. You do need to download the Sensi smart app on your phone in order to do the install. The directions were clear and easy to follow. You create your schedule on the phone app. You can set different schedules so you can have your regular schedule and then vacation settings as a different schedule or weekday and weekend as separate schedules. You can set your Cool settings, Heat settings, or Auto settings.If you have it set to Cool or Heat, it will function like a "dumb" thermostat in that it will only cycle on based on the Cool setting or Heat setting. But, if you have it set to Auto, you create your comfort window: Cool if the temp nudges above X, and heat if the temp drops below Y without having to manually change the thermostat over from cool to heat or back. You can do as close as 2 degrees to keep the house very consistent.The schedule has four scheduling windows, presumably for Waking, Gone to Work, Evening, and Sleeping. As you look at the app, the currently running schedule window is at the far right at the bottom of the screen, and the next schedule window is at the far left. If there is neither heating nor cooling occurring, you will see the app screen is grey. If it is cooling, the screen is blue, and if it's heating the screen is orange.If you want the thermostat to plan ahead so that your house is at your desired temp AT the start of that schedule window, go to Scheduling and toggle on the "early start", otherwise, the thermostat will not kick on to adjust the temp until the actual start of that schedule window.You can change the temp and set a temporary or permanent hold from the actual thermostat or from the phone. The temporary hold ends at the start of the next pre-scheduled time. You can also lock the thermostat so others cannot make adjustments to it without going through the phone app. The set temps (cool at and heat at) are in small circles at the right of the screen. The current room temp is the large center number. You can see in my pics that I have the app set to show the outside temp/weather (top right) as well as the inside relative humidity below the current room temp (as it is at the thermostat - if you have a humidifier in a room away from the thermostat, that room may have a much different RH than at the thermostat).I've included pics so you can see the color differences and what the schedule looks like at the bottom of the screen. I also included pics of the thermostat on my wall - without and with the backlight on.Overall, I am very, very pleased with this thermostat. It does exactly what I was hoping for. I just wish I knew 3 years ago there was an option that didn't require that c-wire. But, better late than never! I'll update if anything changes. But right now, I give it 5 stars.
Images in this review
Top reviews from the United States
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Reviewed in the United States 🇺🇸 on March 25, 2023
Style: DIYPattern Name: ThermostatVerified Purchase
So, three years ago I bought a smart thermostat, installed it and it didn't work. I called company who installed my AC/furnace to see what the issue was and I was told I needed the dreaded c-wire, and this upgrade would cost more than $600 - plus the thermostat. I accepted I would not be able to have a smart thermostat. But this past week, I was having my furnace serviced and asked the technician about it. He pointed me to this Sensi thermostat that does NOT require a c-wire, using batteries to maintain power and wifi connection. As soon as the tech left, I went on Amazon and ordered it. It was here the next morning and I installed it that day!
The install was extremely easy. You do need to download the Sensi smart app on your phone in order to do the install. The directions were clear and easy to follow. You create your schedule on the phone app. You can set different schedules so you can have your regular schedule and then vacation settings as a different schedule or weekday and weekend as separate schedules. You can set your Cool settings, Heat settings, or Auto settings.
If you have it set to Cool or Heat, it will function like a "dumb" thermostat in that it will only cycle on based on the Cool setting or Heat setting. But, if you have it set to Auto, you create your comfort window: Cool if the temp nudges above X, and heat if the temp drops below Y without having to manually change the thermostat over from cool to heat or back. You can do as close as 2 degrees to keep the house very consistent.
The schedule has four scheduling windows, presumably for Waking, Gone to Work, Evening, and Sleeping. As you look at the app, the currently running schedule window is at the far right at the bottom of the screen, and the next schedule window is at the far left. If there is neither heating nor cooling occurring, you will see the app screen is grey. If it is cooling, the screen is blue, and if it's heating the screen is orange.
If you want the thermostat to plan ahead so that your house is at your desired temp AT the start of that schedule window, go to Scheduling and toggle on the "early start", otherwise, the thermostat will not kick on to adjust the temp until the actual start of that schedule window.
You can change the temp and set a temporary or permanent hold from the actual thermostat or from the phone. The temporary hold ends at the start of the next pre-scheduled time. You can also lock the thermostat so others cannot make adjustments to it without going through the phone app. The set temps (cool at and heat at) are in small circles at the right of the screen. The current room temp is the large center number. You can see in my pics that I have the app set to show the outside temp/weather (top right) as well as the inside relative humidity below the current room temp (as it is at the thermostat - if you have a humidifier in a room away from the thermostat, that room may have a much different RH than at the thermostat).
I've included pics so you can see the color differences and what the schedule looks like at the bottom of the screen. I also included pics of the thermostat on my wall - without and with the backlight on.
Overall, I am very, very pleased with this thermostat. It does exactly what I was hoping for. I just wish I knew 3 years ago there was an option that didn't require that c-wire. But, better late than never! I'll update if anything changes. But right now, I give it 5 stars.
The install was extremely easy. You do need to download the Sensi smart app on your phone in order to do the install. The directions were clear and easy to follow. You create your schedule on the phone app. You can set different schedules so you can have your regular schedule and then vacation settings as a different schedule or weekday and weekend as separate schedules. You can set your Cool settings, Heat settings, or Auto settings.
If you have it set to Cool or Heat, it will function like a "dumb" thermostat in that it will only cycle on based on the Cool setting or Heat setting. But, if you have it set to Auto, you create your comfort window: Cool if the temp nudges above X, and heat if the temp drops below Y without having to manually change the thermostat over from cool to heat or back. You can do as close as 2 degrees to keep the house very consistent.
The schedule has four scheduling windows, presumably for Waking, Gone to Work, Evening, and Sleeping. As you look at the app, the currently running schedule window is at the far right at the bottom of the screen, and the next schedule window is at the far left. If there is neither heating nor cooling occurring, you will see the app screen is grey. If it is cooling, the screen is blue, and if it's heating the screen is orange.
If you want the thermostat to plan ahead so that your house is at your desired temp AT the start of that schedule window, go to Scheduling and toggle on the "early start", otherwise, the thermostat will not kick on to adjust the temp until the actual start of that schedule window.
You can change the temp and set a temporary or permanent hold from the actual thermostat or from the phone. The temporary hold ends at the start of the next pre-scheduled time. You can also lock the thermostat so others cannot make adjustments to it without going through the phone app. The set temps (cool at and heat at) are in small circles at the right of the screen. The current room temp is the large center number. You can see in my pics that I have the app set to show the outside temp/weather (top right) as well as the inside relative humidity below the current room temp (as it is at the thermostat - if you have a humidifier in a room away from the thermostat, that room may have a much different RH than at the thermostat).
I've included pics so you can see the color differences and what the schedule looks like at the bottom of the screen. I also included pics of the thermostat on my wall - without and with the backlight on.
Overall, I am very, very pleased with this thermostat. It does exactly what I was hoping for. I just wish I knew 3 years ago there was an option that didn't require that c-wire. But, better late than never! I'll update if anything changes. But right now, I give it 5 stars.
Images in this review
Reviewed in the United States 🇺🇸 on January 14, 2023
Style: DIYPattern Name: ThermostatVerified Purchase
