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To Repair or Replace

Water districts are faced with this decision frequently on the many pumps, blowers and drives that make up their water and wastewater systems. In the past, a rule of thumb was used to make this decision based on the cost of the repairs compared to the cost of a new replacement unit. The adage stated that if the repair was greater than 50% of the replacement cost, then it was better to replace the unit. The origin of this rule is unknown and the line of logic it follows questionable. The best guess is that for complicated equipment with many moving parts, a repair only brings a portion of the total machine back to manufacturer’s tolerances. If only half the machine were repaired, it might make sense that the other half may fail in short order and thus the total cost would be more than a new unit. To read the entire article, please click here.

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