Begin with a documented diagnosis
Ask what failed, why the proposed work addresses it, what is covered by warranty, and whether other known conditions affect the repair. A system's age is context, not a diagnosis.
Compare the full decision
- Current repair cost and likely remaining value
- Frequency and type of recent repairs
- Comfort, humidity, noise, and energy-performance concerns
- Parts availability and equipment compatibility
- Replacement scope, financing terms, warranties, and expected ownership horizon
Get comparable replacement scopes
A useful written estimate identifies matched equipment, sizing method, efficiency ratings, duct or electrical changes, controls, drainage, permits when applicable, startup checks, warranty responsibilities, exclusions, and payment terms.