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Sensi™ smart thermostat + Peak Time Savings

Price $129.00
Your Price:
Plus sales tax. Free Shipping. Peak Time Savings enrollment required. You save

Available to residential electric customers with Central A/C.

Enrollment in Peak Time Savings helps manage energy use during peak hours.

$129.00 after instant rebates

After Installation and connecting this thermostat to your Emerson account, complete your Peak Time Savings enrollment here. Failure to enroll the thermostat may result in a charge back of $50 to your account.

Maximum Purchase:
2 units

Before you purchase this thermostat, please make sure it is compatible with your HVAC system.
Check compatibility here.

Before you purchase this thermostat, please make sure it is compatible with your HVAC system. Not installing or activating the thermostat may result in a charge back of $50 to your account . Check compatibility here.
Limit 2 thermostats per residential electric account.
Limit 2 thermostats per residential electric account with Peak Time Savings sign-up bonus (must both be same brand). Limit 3 total thermostat rebates per residential electric account.

This opportunity is made possible when combining the Emerson discount, $50 instant energy efficiency program rebate, and $50 sign-up bonus to complete your enrollment in the Peak Time Savings program. Ameren Missouri and Emerson are partnering to help reduce your energy use and costs by offering a free Sensi smart thermostat.

This offer includes a $50 instant rebate from Ameren Missouri for agreeing to complete your enrollment in Peak Time Savings. After installing your thermostat and connecting it to your Emerson account, please complete your enrollment here. On occasional extremely hot days, your thermostat will be synced to precool to a comfortable temperature and reduce energy during high demand periods. 

Your continued participation in Peak Time Savings also earns you a $25 annual bonus each year on your enrollment anniversary.

The Sensi Wi-Fi Thermostat was designed to function seamlessly with your phone for comfort and control on your terms.

From across the room or across the country, you can use the intuitive app to remotely control and schedule your home comfort – Anytime. Anywhere.

Father and son playing on the living room floor with the Sensi thermostat on the wall in the background

The ENERGY STAR® certified Sensi thermostat helps you save on your HVAC energy costs, with features like geofencing, 7-day flexible scheduling, remote access and in-app system usage.


energy star badge



Takes up the same space as a traditional thermostat so you don’t have to patch your wall or paint. Order the wall plate for an even more flexible and finished-looking installation.

Avoids any extra work painting or patching the wall thanks to the standard thermostat size.


The Sensi install on wall in a living room

Monitor your system usage right in the app
Integrates with smart home platforms
7 day flexible scheduling and geofencing


You can feel confident and comfortable about installing Sensi Wi-Fi thermostat yourself. No experience required.


Most install in 30 minutes or less*. Some system types require a common wire
Check compatibility using the Sensi mobile app

View Instruction Details

*Based on surveyresults of 2,120 respondents that purchased and install a Sensi thermostat in 2018, approximately 70% reported installing in 30 minutes or less.




Controls from anywhere. Remotely control your home comfort from your smartphone or tablet using the Sensi mobile app for Android and iOS devices.

Includes a backlight perfect for night time or low lighting

Includes filter reminders and smart alerts. Receive a notification when it’s time to change your filter with service reminders. Detect extreme temperatures and humidity levels in your home with smart alerts.

Improves air circulation and indoor air quality by helping to regulate temperature and prevent buildup of particles.


Monitors current day and historical heating, cooling and fan runtimes right in the app with usage reports.

Offers extensive compatibility and works with the HVAC equipment found in most homes - a c-wire is required for heat-only, cool-only and heat pump systems. Check system and router compatibility.


View Additional Specs

We also recommend purchasing the Sensi Touch Wallplate for $5.49 to make for a clean-looking installation.

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