What are the exact Energy Star most efficient criteria for heat pump water heaters this year, and which brands currently qualify for the highest federal tax credits and local utility rebates?
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Fan-out diagram
The searches the AI actually ran for this prompt.
SEED QUERY
What are the exact Energy Star most efficient criteria for heat pump water heaters this year, and which brands currently qualify for the highest federal tax credits and local utility rebates?
3 real searches · 1 real-search pass
2026 ENERGY STAR Most Efficient heat pump water heater criteria specification exact UEF first hour rating 2026Google ↗
OBSERVEDComparison
2026 federal 25C heat pump water heater tax credit expiration 2025 2026 IRS Energy Efficient Home Improvement CreditGoogle ↗
OBSERVEDReason
Charlotte North Carolina 2026 Duke Energy heat pump water heater rebate utility incentiveGoogle ↗
OBSERVEDConsequence
Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.
Query classes
Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.
ChatGPT real searches (3)
Classes come from the query-classifier (a local Laya model). 3 of 3 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.
Searches and sources
ChatGPT3 real searches · gpt-6
2026 ENERGY STAR Most Efficient heat pump water heater criteria specification exact UEF first hour rating 2026 Google ↗
2026 federal 25C heat pump water heater tax credit expiration 2025 2026 IRS Energy Efficient Home Improvement Credit Google ↗
Charlotte North Carolina 2026 Duke Energy heat pump water heater rebate utility incentive Google ↗
- ENERGY STAR Certified Water Heaters · data.energystar.gov
- Water Heater Key Product Criteria · energystar.gov
- Heat Pump Water Heaters Results · energystar.gov
- Energy Efficient Home Improvement Credit · irs.gov
- Heat Pump Water Heaters Tax Credit · energystar.gov
- 26 U.S. Code § 25C - Energy efficient home improvement credit | U.S. Code | US Law · law.cornell.edu
- Special Offers and Rebates from ENERGY STAR Partners · energystar.gov
- Duke Energy Carolinas - Residential Energy Efficiency Rebate Program from Duke Energy Carolinas, LLC · rebates.energy
- Energy Saver North Carolina · deq.nc.gov
- Energy Efficiency Rebates · deq.nc.gov
Queries
3 queries · click a column to sort
| Query / type | Search | Intent | Query class | Routing format | Cluster | Freq ↓ | Weight |
|---|---|---|---|---|---|---|---|
2026 ENERGY STAR Most Efficient heat pump water heater criteria specification exact UEF first hour rating 2026 OBSERVED | Google ↗ AI Mode ↗ | — | Comparison | — | — | 1x of 1 | |
2026 federal 25C heat pump water heater tax credit expiration 2025 2026 IRS Energy Efficient Home Improvement Credit OBSERVED | Google ↗ AI Mode ↗ | — | Reason | — | — | 1x of 1 | |
Charlotte North Carolina 2026 Duke Energy heat pump water heater rebate utility incentive OBSERVED | Google ↗ AI Mode ↗ | — | Consequence | — | — | 1x of 1 |