Get an instant $125 discount on a smart thermostat.

  1. Check which thermostats qualify
  2. Verify you're an eligible Ameren Illinois customer
  3. Receive a coupon and use it for your smart thermostat purchase (This coupon is to be used at point-of-purchase. If you have already purchased your smart thermostat, you can apply for a rebate at AmerenIllinoisRebates.com.)

Select your smart thermostat coupon:

neste
MSRP - $169 Your Price - $44
NestLT
MSRP - $249 Your Price - $124
ecobee3lite1
MSRP - $169 Your Price - $44
HoneywellLyricT5
MSRP - $149 Your Price - $24
HoneywellColorThermostat
MSRP - $199 Your Price - $74
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