Home Energy Efficiency Authentic Assessment
Directions: Complete the energy calculations for the energy cost and cost recuperation for both types of appliances, then complete the reflection questions.
Part 1: Refrigerator
| Energy Star Refrigerator | Non-Energy Star Refrigerator |
| Model #: Frigidaire FFHT1832T | Model #: Frigidaire FFTR1821T |
| Style: Top mount door | Style: Top mount door |
| Cubic Feet: 18 cubic feet | Cubic Feet: 18 cubic feet |
| Yearly Energy Usage (from Energy Guide): 363 kWh/yr | Yearly Energy Usage (from Energy Guide): 404 kWh/yr |
| Picture of Appliance:
|
Picture of Appliance:
|
| Website Link to Retail Store | Website Link to Retail Store |
| Purchase Price: (1) $1,246.80 | Purchase Price: (2) $1,186.80 |
| Yearly Energy Use (in kWh): 363 kWh/yr | Yearly Energy Use (in kWh): 404 kWh/yr |
| Energy Cost per Year
(Energy usage in kWh from above x 13.19 cents/kWh ): (3) |
Energy Cost per Year
(Energy usage in kWh from above x 13.19 cents/kWh ): (4) |
Cost Recuperation Estimation
- Initial Cost Difference: Energy Star Appliance Price (1) ‒ Non-Energy Star Appliance Price (2)
Calculation (Show Your Work):
This is the original upfront price difference. In other words, how much more money the Energy-Star Appliance costs.
- Cost Per Year Difference: Non-Energy Star Appliance Energy Cost (4) ‒ Energy-Star Appliance Energy Cost (3)
Calculation (Show Your Work):
This is how much money you will save each year by choosing an Energy-Star Appliance.
- Time to Recuperate Your Upfront Cost: Initial Cost Difference from #1 / Cost Per Year Difference from #2
Calculation (Show Your Work):
This is how many years it will take for you to recoup your initial investment and start saving money.
Part 2: Washing Machine
| Energy Star Washing Machine | Non-Energy Star Washing Machine |
| Model #: GTW500ASN | Model #: GTW465ASN |
| Style: Top Loader | Style: Top Loader |
| Cubic Feet: 4.5 cubic feet | Cubic Feet: 4.5 cubic feet |
| Yearly Energy Usage (from Energy Guide): 210 kWh/yr | Yearly Energy Usage (from Energy Guide): 175 kWh/yr |
| Picture of Appliance:
|
Picture of Appliance:
|
| Website Link to Retail Store | Website Link to Retail Store |
| Purchase Price: (1) $498.00 | Purchase Price: (2) $478.00 |
| Yearly Energy Use (in kWh): 175 kWh/yr | Yearly Energy Use (in kWh): 210 kWh/yr |
| Energy Cost per Year
(Energy usage in kWh from above x 13.19 cents/kWh ): (3) |
Energy Cost per Year
(Energy usage in kWh from above x 13.19 cents/kWh ): (4) |
Cost Recuperation Estimation
- Initial Cost Difference: Energy Star Appliance Price (1) ‒ Non-Energy Star Appliance Price (2)
Calculation (Show Your Work):
This is the original upfront price difference. In other words, how much more money the Energy-Star Appliance costs.
- Cost Per Year Difference: Non-Energy Star Appliance Energy Cost (4) ‒ Energy-Star Appliance Energy Cost (3)
Calculation (Show Your Work):
This is how much money you will save each year by choosing an Energy-Star Appliance.
- Time to Recuperate Your Upfront Cost: Initial Cost Difference from #1 / Cost Per Year Difference from #2
Calculation (Show Your Work):
This is how many years it will take for you to recoup your initial investment and start saving money.
Part 3 Reflection Questions
- After completing this assignment, do you think Energy Star Appliances are worth the investment?
- Why do you think consumers do not purchase Energy Star Appliances?
- Besides switching to Energy Star Appliances, identify and describe 3 other ways you can reduce your energy use (and your energy bill) at home.
