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The table below shows sample pricing for a 2,700 square foot Colorado home, natural gas furnace, average construction. Estimates are shown on a monthly basis. Net cost includes applicable tax incentives. Prices listed are estimates only and will vary for each individual home.

  Parts & Labor Net Cost Est.
Savings
ROI Payback (years) Payment in 5% Mortgage Cash Flow
Retrofit furnace/AC with Geothermal $34,000 $23,800 $120 37.9% 2.6 $82 $38
Insulation & Air Sealing $5,500 $5,500 $45 9.8% 10.2 $20 $25
Solar HW Space Heating $22,500 $15,570 $110 8.4% 11.9 $84 $26
Geothermal Solar HW Heating $47,500 $33,250 $200 7.2% 13.9 $178 $22
Geothermal Horizontal Loop $29,500 $20,650 $120 7.0% 14.3 $110 $10
Geothermal Vertical Loop $34,000 $23,800 $130 6.6% 15.3 $127 $3
Solar Domestic HW Only $9,000 $6,300 $32 6.1% 16.4 $33 ($1)
10kw Wind Turbine
(120 ft tower)
$57,000 $39,900 $200 6.0% 16.6 $214 ($14)
1.7kw Wind Turbine
(33 ft tower)
$13,000 $9,100 $35 4.6% 21.7 $48 ($13)
Energy Recovery Ventilator $3,400 $3,400 $12 4.2% 23.6 $12 $0
Tankless Electric Partial $2,500 $2,500 $4 1.9% 52.1 $9 ($5)
Solar Photovoltaic 6 kw $48,000 $48,000 $72 1.8% 55.6 $180 ($108)
Tankless Whole House Gas $4,850 $4,850 $5 1.2% 80.8 $18 ($13)