The Situation
Tom’s 1962 bungalow in Portland had no central HVAC — just three aging window AC units and electric baseboard heat. The window units were 8–12 years old, running inefficiently, and one had started leaking.
When he set up Property Autopilot, the platform assessed his cooling assets and flagged:
- Window Unit (Bedroom): 12 years old, end of life
- Window Unit (Living Room): 9 years old, declining efficiency
- Window Unit (Office): 8 years old, leaking
- Cooling coverage: gaps in hallway and bathroom
The platform’s recommendation wasn’t just “replace the window units”:
“Given your home’s lack of ductwork, consider a ductless mini-split system as a replacement. A 2-zone or 3-zone system would provide better efficiency, quieter operation, year-round heating/cooling in one unit, and eliminate the need for window units entirely.”
What Property Autopilot Recommended
The app generated a full comparison for his situation:
| Option | Install Cost | Annual Energy Cost | Noise Level | Lifespan |
|---|---|---|---|---|
| Replace 3 Window Units | $900–$1,500 | $820/year | High | 8–10 yr |
| 3-Zone Mini-Split | $4,500–$7,000 | $200–$280/year | Very Low | 20 yr |
It also noted Oregon’s Energy Trust rebates (up to $800 for qualifying mini-split installations) and flagged that Portland’s mild climate makes mini-splits highly efficient year-round — they handle both heating and cooling, potentially replacing his electric baseboard heaters too.
What Happened
Tom installed a 3-zone Mitsubishi mini-split system for $6,200 installed. After Oregon Energy Trust rebates of $800, his net cost was $5,400.
The results after the first full year:
- Cooling costs dropped from $820/year to $198/year — a 76% reduction for cooling alone
- Heating costs dropped by 35% as he replaced baseboard heat in two zones
- Total annual saving: ~$620/year
- The home is now consistently comfortable in all rooms — no more hot spots, no noise, no window blockage
Payback period at $620/year saving: approximately 8.7 years — then pure savings on a system rated for 20 years.
The Outcome
Tom’s home went from three aging, inefficient window units to a quiet, efficient, whole-home comfort system. Property Autopilot tracked the installation date, set up annual service reminders (filter cleaning every 3 months, professional service annually), and recalculated his Property Health Score — which jumped 14 points.
Property Autopilot understands your home’s specific asset configuration and recommends replacement options that make sense for your home type, climate, and budget — not generic advice.