Do I Qualify
- Heat pumps require Ameren Illinois residential electric service. Limit two per account.
- Geothermal systems must support multiple stages and have an ECM blower. Systems using a gas furnace are excluded.
- Thermostats require an eligible residential gas or electric account.
- The consumer page and linked fact sheet show different geothermal amounts. Confirm the amount before purchase.
How Much Comes Off
| Equipment | Requirement | Amount |
|---|---|---|
| Ducted air source heat pump | <65 kBtu; ≥15.2 SEER2 and ≥8.1 HSPF2; AHRI confirmed. | $900 per unit/system |
| Ductless mini-split heat pump | ≥16 SEER2 and ≥8.55 HSPF2; AHRI confirmed. | $630 per unit/system |
| Smart thermostat | Approved Product List; limit one per residential account. | $115 per unit/system |
| Ground source heat pump | 15,001–21,000 Btu/h; ENERGY STAR; closed-loop water-to-air. | $1,080 per unit/system |
| Ground source heat pump | 21,001–27,000 Btu/h; ENERGY STAR; closed-loop water-to-air. | $1,440 per unit/system |
| Ground source heat pump | 27,001–33,000 Btu/h; ENERGY STAR; closed-loop water-to-air. | $1,800 per unit/system |
| Ground source heat pump | 33,001–39,000 Btu/h; ENERGY STAR; closed-loop water-to-air. | $2,160 per unit/system |
| Ground source heat pump | 39,001–45,000 Btu/h; ENERGY STAR; closed-loop water-to-air. | $2,520 per unit/system |
| Ground source heat pump | 45,001–51,000 Btu/h; ENERGY STAR; closed-loop water-to-air. | $2,880 per unit/system |
| Ground source heat pump | 51,001–57,000 Btu/h; ENERGY STAR; closed-loop water-to-air. | $3,240 per unit/system |
| Ground source heat pump | 57,001–63,000 Btu/h; ENERGY STAR; closed-loop water-to-air. | $3,600 per unit/system |
| Ground source heat pump | 63,001–69,000 Btu/h; ENERGY STAR; closed-loop water-to-air. | $3,960 per unit/system |
| Ground source heat pump | 69,001–75,000 Btu/h; ENERGY STAR; closed-loop water-to-air. | $4,320 per unit/system |
| Geothermal desuperheater add-on | Ground source heat pump installed with a desuperheater. | $500 per system |
Who Files It
The participating distributor submits the transaction. Contractors receive discounts and pass savings to customers.
The money is paid to the distributor.
The Steps to Apply
- Ask your contractor to buy from a participating distributor.
- Confirm the model and account qualify before purchase.
- Have the contractor show the discount in your quote.
Read on October 22, 2026 from the Ameren Illinois page. The chart was printed PY2026 Rev. 1. A change to this program is a dated line in the changelog.