This site provides practical, state-aware decision support for efficient home appliance upgrades in the U.S.
What We Calculate
For model and state pages, we estimate:
- Annual operating cost
- 3-year operating cost
- Annual and 3-year savings vs. baseline usage
- Net upgrade cost after incentives
- Estimated payback period
- Indicative CO2 impact differences by grid context
These outputs are intended for decision support, not as a guarantee of future utility bills or rebate approvals.
Core Inputs
Our calculations combine multiple public U.S. data layers, including:
- Product-level efficiency/certification records
- State electricity rate references
- State rebate program data and status fields
- Federal credit rule mapping where applicable
- State grid emissions factors
- Utility rate override layers (where available)
Modeling Logic (High Level)
- Start with model energy use assumptions (annual kWh).
- Apply state rate context to estimate annual operating cost.
- Compare against baseline usage to estimate savings.
- Apply incentive layers (state + federal, where mapped) to estimate net cost.
- Estimate payback from net cost and annual savings.
- Add confidence and action-checklist context where data quality differs by state/program.
State and Utility Variability
Outputs can vary significantly by:
- Local utility tariff structure
- Time-of-use billing
- Climate and seasonal load
- Household behavior and usage intensity
- Installation quality and system setup
Where you have better local information, use the page-level overrides to test your own assumptions.
Confidence and Freshness
Some fields are stronger than others across states and product categories.
We surface confidence context and “last checked” style indicators where available to support transparent interpretation.
What This Is Not
- Not tax advice
- Not legal advice
- Not an official state or federal program determination
- Not a replacement for utility bill analysis or contractor quotes
Always verify final eligibility, caps, deadlines, and filing requirements on official program pages before purchase.