CRD CRD Economic Analysis & Project Management

Question 1

What financial metric compares the total lifecycle cost of a geothermal system against a conventional HVAC alternative over a specified period?

Accepted Answer

Life Cycle Cost Analysis (LCCA)

Answer

LCCA accounts for installation, operating, maintenance, and replacement costs over the system's life to give a total cost comparison against alternatives.

Question 2

The US federal residential clean energy tax credit currently allows homeowners to deduct what percentage of qualifying geothermal heat pump installation costs?

Accepted Answer

30% of the total installed cost with no cap through 2032 under the Inflation Reduction Act

Answer

The Inflation Reduction Act extended and increased the residential clean energy credit to 30% of qualified geothermal heat pump installation costs through 2032.

Question 3

Which factor most significantly affects the simple payback period of a residential geothermal heat pump compared to a high-efficiency gas furnace and central AC system?

Accepted Answer

The local cost of electricity versus natural gas and the heating/cooling load of the home

Answer

Payback period is driven primarily by the energy cost differential between the geothermal system and the fossil fuel alternative it replaces.

Question 4

What is a common range for simple payback periods for residential geothermal heat pump installations in the US after applying federal tax credits?

Accepted Answer

5 to 15 years depending on local energy prices, load, and installation cost

Answer

After applying the 30% federal tax credit, most US residential geothermal installations see payback periods ranging from roughly 5 to 15 years depending on local conditions.

Question 5

When developing a project budget for a residential geothermal installation, which cost category is typically the largest single line item?

Accepted Answer

Ground loop drilling and installation

Answer

Drilling and installing the ground loop typically accounts for 40–60% of the total installed cost, making it the dominant budget item.

(CRD) Certified Residential Geothermal Designer Practice Test

(CRD) Certified Residential Geothermal Designer Practice Test

CRD CRD Economic Analysis & Project Management