Question: assuming a households appliances are all upgraded to 5 star...

Assuming a house-holds appliances are all upgraded to 5 star energy ratings, the unconstrained economic analysis outputs the following:

1. Initial Cost of the Appliances = $1624

2. Annual Return = $38.78

Task: Compute the payback period by performing an 8 year unconstrained economic analysis and simply payback period. From this analysis, comment on whether a change in the energy rating of the appliances is cost-effective or not.