Residential Frequently Asked Questions

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Home Efficiency Incentives

No, you can choose between heating and cooling, and/or insulation and air sealing.

We would like to know within 30 days of your home audit if you would like to move forward with the recommendations.

An Ameren Illinois-approved Program Ally contractor must be used. Please call 1.866.838.6918 to see if your contractor is an active Program Ally.

Yes, you can particpate in the program with a Pay Agreement in place.

In some instances, certain mobile homes structures do qualify.

No. Due to sharing a common wall, our testing does not read accurately for a single unit.

Smart Thermostats

Visit all the ways to purchase a smart thermostat here.

No, but to qualify for the Smart Thermostat incentive, please choose an ENERGY STAR® certified thermostat. Please visit for a complete list.

If you are using a mobile device, please ensure your software is up to date and try again. If you are still having errors, please print the application and mail it — along with your receipt of purchase and UPC barcode — to:

Ameren Illinois Energy Efficiency Program
300 Liberty Street, 4th Floor
Peoria, IL 61602

The UPC barcode from the packaging is required to receive the rebate. If a UPC barcode is not provided, the application will not be processed.

Please call our Rebate Processing Team at 1.708.478.7668.

It usually takes 4 to 6 weeks to process an application.

Appliance Recycling

Full-size refrigerators and freezers (10 to 27 cubic feet) that still cool can qualify for appliance recycling.

You must be an Ameren Illinois residential electric customer to qualify.

You will receive a $50 check in the mail within six weeks.

Heating and Cooling

Existing units must be removed by a registered HVAC Program Ally and new equipment must be installed by a registered HVAC Program Ally.

Audits typically take between 2 and 2.5 hours, depending on the size of the home.

You can find active registered Program Allies through this search.

Early Retirement incentives must be verified by your Program Ally.

Yes, all projects require program approval prior to project start date.

All program paperwork must be submitted within 30 days of the installation date or by December 31 — whichever comes first.

With Ameren Illinois Energy Efficiency Program,

"I'm saving about $300 a year on my energy costs."
— Paul Faraci, Ameren Illinois Customer Learn How