Maine headline: Up to $10,000 combined Efficiency Maine + HEEHRA. State runs the most generous state-funded heat pump program in the US.

Active programs

Efficiency Maine

The flagship program.1

EquipmentEfficiency Maine rebate
Whole-home cold-climate ducted$4,000
Multi-zone ductless (4+ zones)$4,000
Single ductless head$1,000
Geothermal$5,000

Maine HEEHRA

Administered by Efficiency Maine Trust.2

Income tierCap
≤80% AMI$8,000
80-150% AMI$4,000

Realistic example

Portland home replacing oil boiler with whole-home cold-climate ducted heat pump:

  • Equipment + install: $20,000
  • Efficiency Maine: $4,000
  • HEEHRA at 80-150% AMI: $4,000
  • Net cost: $12,000

What to do next

Use Efficiency Maine’s contractor finder. For broader context, see the 2026 heat pump rebate guide.

The 30-second summary:
  • Efficiency Maine is the most generous state program in the US.
  • Up to $4,000 alone, $10,000+ combined with HEEHRA.
  • NEEP cold-climate certification required for full rebate.
  • Strong oil-to-heat-pump conversion economics in ME.