Smart Thermostats

smart thermostat on wall

Program for savings

Use your smartphone to help save money. Upgrade your old thermostat to a smart thermostat and save!

The benefits of a smart thermostat

A smart thermostat can:

  • Give you access and control from anywhere. Conveniently access and manage your smart thermostat to adjust your home’s comfort by using your smartphone, tablet, or computer.
  • Reduce energy costs. Over time, a smart thermostat can learn your household’s schedule, habits, and preferences then make automatic adjustments—saving you energy and money.
  • Provide comfort and ease of use. Advanced learning features like geofencing, coaching, HVAC diagnostics, and comparative information give you quick access to important information so you easily can make informed decisions and control the comfort of your home.

Savings will depend on how you program and manage your smart thermostat's settings, but for the average household almost half the annual energy bill goes toward heating and cooling. Being smart will help you save!

Rebate eligibility and details

Rebates are available for Tier II and Tier III smart thermostats.

  • Customers with electricity as their home’s primary heating source may qualify for a rebate of $100 for a Tier II or $150 for a Tier III smart thermostat.
  • Customers with electric cooling but without electric heating may qualify for a rebate of $35 for a Tier II or $50 for a Tier III smart thermostat.

Please note: We reserve the right to limit any rebate. Rebates cover only the cost of the smart thermostat purchased and cannot be applied to shipping and handling or installation costs. Only one rebate per household.

How do I know if my smart thermostat is Tier II or Tier III?

Tier II: This communicating thermostat gives you access to set points and schedules from anywhere by using a smart device.

Tier III: This analytics capable thermostat offers all Tier II options as well as additional energy-saving features such as geofencing, coaching, HVAC diagnostics, and comparative information.

For rebate-approved smart thermostats, review the full model name located on the smart thermostat's box and look for key words that match it to a Tier level in the below tables.

Qualifying Tier II smart thermostats with rebates of $100/$35

Brand Key word(s) located in model name Example
Bryant Wi-Fi thermostats (Housewise, COR) Bryant Housewise Wi-Fi thermostat
Carrier COR Wi-Fi COR 7C Wi-Fi thermostat
Ecobee Ecobee3 Lite Ecobee3 Lite
Honeywell Wi-Fi Wi-Fi 7-day programmable thermostat
Lennox iComfort Wi-Fi thermostat iComfort Wi-Fi touchscreen thermostat
Other (with approval)    


Qualifying Tier III smart thermostats with rebates of $150/$50

Brand Key word(s) located in model name Example
Bryant Evolution Connex Control EVOLUTION CONNEX system control
Carrier Infinity Infinity system control
Ecobee Ecobee3 Lite w/sensor Ecobee3 Lite w/sensor
Ecobee Ecobee3/4, smart thermostat with voice control Ecobee4 (look for eco+ feature)
Google Nest Learning thermostat Nest Learning thermostat
Google Nest thermostat E Nest thermostat E
Honeywell Smart T5+ smart thermostat
Lennox iComfort smart thermostat iComfort S30 ultra smart thermostat
Other (with approval)    


If you have any questions about rebate eligibility, or don’t see your preferred thermostat listed, contact our Idea Center or call 800-493-3299 during business hours.

Apply for your rebate

Apply online or fill out the Smart Thermostat rebate form.

If using our paper rebate form, when completed, mail it, along with any required documentation to:

Idea Center
Otter Tail Power Company
P.O. Box 496
Fergus Falls, MN 56538

Please allow 6–8 weeks for your rebate check to arrive.

Check rebate status