Do I Qualify
- Install new qualifying equipment at an Otter Tail electric-service address.
- Provide an AHRI certificate or accepted efficiency documentation.
- Air-source rebates cannot exceed 75% of project cost. Geothermal rebates cannot exceed 50%.
How Much Comes Off
| Equipment | Requirement | Amount |
|---|---|---|
| Standard ducted or ductless heat pump | SEER2 ≥14.3; HSPF2 ≥7.5 | $300 per ton |
| Ductless cold-climate heat pump | SEER2 ≥16.0; HSPF2 ≥8.0 | $600 per ton |
| Ducted cold-climate heat pump | SEER2 ≥16.0; HSPF2 ≥8.0 | $800 per ton |
| Residential geothermal heat pump | ENERGY STAR or published qualifying COP and EER ratings | $1,200 per ton |
| Heat-pump Quality Installation bonus | Certified contractor in the Quality Installation program | $200 per ton |
| Heat-pump energy-control bonus | Cold-climate or geothermal heat pump on Dual Fuel, Deferred Load or Residential Demand Control Rate | $40 per ton |
Who Files It
The customer submits the application and invoice. A certified contractor supplies Quality Installation documentation.
The money is paid to the homeowner.
The Steps to Apply
- Choose a qualifying system and ask about eligible bonuses. Program page.
- Keep the invoice and efficiency certificate.
- Submit by March 31 of the year after installation. Program page.
Read on October 22, 2026 from the Otter Tail Power page. A change to this program is a dated line in the changelog.