Case Study #2

  • residential home white
  • residential home white

Property Features:

  • Single-family residence
  • Built in 1990
  • 5 bedrooms/3.5 baths
  • 3,335 square feet

Energy Measures:

  • New 4-ton Trane dual fuel split HVAC system (16.5 SEER, 13 EER, 9.0 HSPF, 80% AFUE) 
  • Change electric rate schedule from E-1 (Tier) to E-6 (TOU)
  • Lower and bury ducting in attic
  • Insulate attic to R-60
  • Seal duct system to 10%
  • Air seal attic to 15% leakage reduction
  • Replace pool pump with variable-speed pump
  • 20-panel solar system (255-watt panels / with Enphase M-215 micro inverter)


Costs/Financing/Rebates:

  • Install Amount: $45,955
  • Utility Bill Savings: $312.21
  • Monthly Payment: $232.85 
  • Annual Savings: $952.32
  • Cash Rebates: $5,484
  • Tax Credit 2014: $6,030
  • Customer Contribution: $0