Repair or replace: making the call defensible

The repair-or-replace argument is usually lost by maintenance, because the repair cost is visible and this year, while the replacement cost is large and next year. Four tests turn it into a decision that can be defended with numbers.

Test 1: cumulative repair cost against replacement cost

Add up what has been spent on this asset over the last three years, including labour. When that total passes roughly half the cost of a new one, replacement is usually the cheaper option and almost always the calmer one.

Test 2: the trend, not the total

Repair spend rising year on year is a stronger signal than a large one-off. Two years of increasing cost on the same asset means you are on the wrong side of its life, and next year will be worse than this year.

Test 3: what the failures cost beyond the repair

A repair bill is the smallest part of a breakdown. Add the lost production or lost use of the space, the overtime, the emergency contractor premium, and the follow-on damage. That number is usually several times the invoice, and it is the number that changes minds.

Test 4: can you still get parts

An asset you cannot get parts for is finished, whatever its condition. Lead times stretching from days to months, or parts only available reconditioned, is the point at which a working machine becomes a risk. Check this before it is urgent.

The two numbers to have ready

Neither of these can be assembled during the meeting, which is why the argument usually gets lost.

• •Total spend on this asset over three years, including your own labour hours costed
• •What replacement would cost today, including removal, installation and any work needed to get the old one out

Ask for the money against the cost of not spending it

A replacement request that says "this unit has failed 23 times in 14 months, cost 41,000 in repairs and 90 hours of overtime, and parts are now 12 weeks out" is a different document from a request for capital. The first frames the decision as a choice between two costs, which is what it is.

If the answer is no, record it

A declined replacement should be written down as a decision, with the date and who made it, and the expected consequences. That is not politics. It is how a deferred item enters the deferred maintenance backlog and shows up in next year’s number rather than vanishing.