What CRACTT weighs
The 50% rule, applied properly
Repair cost against replacement cost, adjusted for remaining expected life.
Failure type
A cheap common part versus a compressor or control board failure that signals the end.
Energy and water cost
What a modern unit saves per year — sometimes enough to justify the upgrade.
Timing and disruption
Delivery lead times, install costs, and haul-away that belong in the replace column.
FAQ
- What if I don't know the age?
- Give the model number — CRACTT can usually estimate the production year.
- Does it cover HVAC and water heaters?
- Yes, same math with the right lifespans.
More CRACTT tools
- Should I repair it or replace it?
- Should I fix it myself or hire someone?
- Is this rent increase worth paying?
- Should I hire a pro or do it myself?
- Is this contractor quote fair?
- Should I replace my windows?