Calculation
| What the compressors' electricity costs per year | $600,000 x 12 percent = $72,000 |
| Lost to leaks that can be fixed, if they are there | $72,000 x 10 percent = $7,200 |
| Spent on pressure the presses do not need, if any | $72,000 x 3 percent, for 6 psi at 0.5 percent per psi = $2,200 |
| Less a leak walk each quarter, per year | 4 leak walks x 4 hours x $40 + $160 of parts = $800 |
| What fixing it could save per year | $7,200 + $2,200 - $800 = $8,600 |
Assumptions
Compressors' share of the electricity bill
12 percent
Compressors' electricity lost to leaks that can be fixed
10 percent
Pressure that can come off the compressors' setting
6 psi
Cost of one maintenance hour
$40 per hour
Hose, couplings and thread tape for repairs, per year
$160
Price of an ultrasonic leak detector
$1,500
Electricity bill per year
$600,000
Price of electricity
10 cents per kWh