Ameren Illinois HVAC Rebate Program

Ameren Illinois Energy Efficiency

Available Energy Assistance

About This Program

Ameren Illinois HVAC Rebate Program is available to homeowners and renters in O'Fallon, IL.

Ameren Illinois electric customers can receive rebates for installing high-efficiency HVAC equipment including central air conditioners, heat pumps, and smart thermostats. Rebates vary by equipment type and efficiency level.

Rebate amount based on equipment efficiency tier and type

Official program page checked live on 2026-06-22.

Data last verified 2026-06-09. How we verify our data.

In O'Fallon, IL, you can combine this program with other local help to cut your cost:

Key Details

  • Rebates up to $2,100 for high-efficiency HVAC
  • Available to all Ameren Illinois electric customers
  • Up to $700 for central AC, $1,200 for heat pump
  • Additional $200 for smart thermostat
  • Must use qualified HVAC contractor

How to Apply

Get free help applying Visit Official Program Page Track this program

(866) 800-0747

A grant-savvy contractor in O'Fallon, IL can handle the paperwork, inspections, and timelines so your funding releases on schedule. Getting matched is free.

You will likely need a contractor to apply

Projects like this almost always need a licensed contractor, and many grants ask for a written estimate as part of your application. Lining up a contractor in O'Fallon early keeps your application moving.

Get matched with a contractor

Each program sets its own contractor rules. Check the official program page for exact requirements.

Your application paperwork

Documents you will likely need

  • Proof you own and live in the home (deed, recent mortgage statement, or property tax bill).
  • A government-issued photo ID for every owner on title.
  • A written estimate from a licensed contractor for the work (many programs require this to apply).
  • A recent utility bill for the home (energy and weatherization programs use it to confirm service and usage).
  • Photos of the problem area or the work to be done.
  • The program's own application form, completed (use the official link or phone number on this page).
Download this checklist (PDF)

Requirements vary by program and locality. Confirm the exact rules on the official program page. We can help you prepare your paperwork, but you submit it yourself.

Deadline: Ongoing program, subject to annual budget

Questions about this program?

Ask us. It is free, and a real person answers within a business day.

Email us about this program

Frequently asked questions

How much can Ameren Illinois HVAC Rebate Program provide in O'Fallon, IL?

Up to $2,100 rebate.

Who qualifies for Ameren Illinois HVAC Rebate Program in O'Fallon?

Ameren Illinois HVAC Rebate Program is open to homeowners and renters in O'Fallon, IL. It has no income limit.

How do I apply for Ameren Illinois HVAC Rebate Program in O'Fallon, IL?

Apply directly with Ameren Illinois Energy Efficiency using the official program link on this page or call (866) 800-0747. There is no middleman and no fee.

Need a Contractor for This Grant?

Grant-approved contractors understand the documentation, inspections, and timelines, so your funding releases on schedule.

Get matched with a pro, free Browse O'Fallon, IL contractors

Find More Programs in O'Fallon, IL

This is just one of many grants, rebates, and free programs available. Stack them together to maximize your savings.

See All Programs