chino8957 chino8957

18-01-2024
Engineering

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A rooftop air handling unit cost $6,000 per year in utilities to operate and has a monthly service contract for maintenance of $600. A replacement unit will cost $25,000 (installed) and will use 40% less energy with a service contract of $150 per month. Which of the following is the total payback in years for the replacement unit?

a. 6 years
b. 8 years
c. 10 years
d. 12 years

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