repair or replace calculator
Compare your actual quotes as one input to a broader repair-or-replace decision.
Read the guide →Repair or replace your AC? Compare the trade-offs
Consider system age, reliability, repair scope, efficiency, installation costs and your expected time in the home.
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Part 1 / 3
Compare the complete quoted cost
Compare the written repair estimate with the cost of a suitable replacement, expected remaining service life, warranty coverage, energy efficiency, and the likelihood of additional repairs. Ask contractors to explain the underlying fault and include installation and permit costs in replacement quotes.
Decision checklist: written diagnosis, complete repair scope, installed replacement scope, warranty exclusions, and the time you expect to keep the home. Mark unknowns explicitly.
Part 2 / 3
Consider repeated breakdowns
List past service visits, the reported faults, and whether each repair resolved the original symptom. Share invoices rather than relying only on recollection.
Ask whether the current problem is related to previous work and what uncertainty remains after the inspection.
Part 3 / 3
Ask about warranties and installation
Request separate explanations of parts coverage, labor coverage, installation work, and any required permit handling. Ask how performance will be checked.
Keep projected savings separate from quoted costs; do not assume a guaranteed payback or a universal replacement percentage. Electrical and refrigerant work belong with qualified professionals.
When to call a professional
Stop if you notice a safety hazard, water near energized equipment, signs of combustion or gas problems, or anything requiring a licensed trade. Do not attempt repairs beyond your training. Manufacturer instructions and local requirements take priority.
Editorial note: This guide is educational. Costs, service intervals, and troubleshooting steps vary by home, equipment, location and applicable code.
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Related homeowner resources
HVAC Repair Cost Guide
Learn why diagnosis, component type, equipment access, labor and local conditions influence repair estimates.
Read the guide →Sources and further reading
- ENERGY STAR: Heating and cooling maintenance checklist
- FTC: Written estimates, contracts, and home improvement scams
These references support general safety, maintenance, or estimate-comparison principles. They are not a diagnosis or a source of live local prices. Use your model-specific manual and applicable local requirements for equipment procedures.