地热节能计算器
使用地热节能计算器评估地源热泵系统的经济效益。比较地热供暖制冷与传统系统的能耗和费用，计算年度节能金额、投资回收期和CO₂减排量。
年储蓄额
2,475 USD
Annual Savings vs Current Annual Heating Cost
公式
How to Calculate Geothermal Savings
Geothermal heat pumps use stable underground temperatures to heat and cool your home much more efficiently than conventional systems.
Formula
Geothermal Cost = Current Cost * (Current Efficiency / Geothermal COP)
Savings = Current Cost - Geothermal Cost
A geothermal system with a COP of 4 delivers 4 units of heating for every 1 unit of electricity, compared to a gas furnace at about 0.95 efficiency.
计算示例
A home spending $2,500/year heating and $800/year cooling, switching from a furnace (COP 1) to geothermal (COP 4).
- 01Current total: $2,500 + $800 = $3,300/year
- 02Geothermal cost: $3,300 * 1 / 4 = $825/year
- 03Annual savings: $3,300 - $825 = $2,475
- 04Savings percentage: $2,475 / $3,300 = 75%
常见问题
How much does a geothermal system cost?
Residential geothermal systems typically cost $15,000-30,000 installed. The federal tax credit covers 30%, bringing net cost to $10,500-21,000. They last 25-50 years.
What is COP in geothermal?
Coefficient of Performance (COP) measures heating efficiency. A COP of 4 means the system produces 4 units of heat per 1 unit of electricity consumed. Geothermal COPs range from 3-5.
Does geothermal work in cold climates?
Yes. Ground temperature below the frost line stays 45-75F year-round regardless of surface weather. Geothermal works well even in northern climates.