Pre-Purchase Inspection Checklist
Equipment age and installation date
Systems over 10 years may need replacement soon ($8,000-$15,000)
Maintenance records
Lack of records suggests neglect, shorter lifespan
Warranty documentation
May be transferable to new owner
Permit records for installations
Unpermitted work may not meet code
Ductwork condition
Leaky ducts waste 20-30% of conditioned air
Refrigerant type (R-22 vs R-410A)
R-22 is phased out, expensive to service
Red Flags to Watch For
- Equipment over 15 years old
- No maintenance records available
- R-22 refrigerant system
- Visible rust or corrosion
- Mismatched indoor/outdoor units
- Builder-grade equipment in luxury home
Request These Documents
- • Installation date and original invoice
- • Maintenance records (last 2-3 years)
- • Warranty information and transfer requirements
- • Permit documentation for any HVAC work
- • Recent utility bills (to estimate costs)
Consider a Dedicated HVAC Inspection
Standard home inspections check basic function but not efficiency or remaining lifespan. A dedicated HVAC inspection ($150-$300) includes refrigerant pressure testing, amperage readings, and estimated remaining useful life — especially valuable for homes with equipment over 8 years old.
If replacement is needed, review our HVAC buying guide and learn about available rebates and tax credits.