Energy Smart is Whirlpool\'s strongest selling point — high-efficiency variants with 9-year tank warranty that match AO Smith Signature Select at typically lower price.
Energy Smart lineup
- Energy Smart 40-gal gas (NU40T161-403)
- Energy Smart 50-gal gas (NU50T161-403) — volume
- Energy Smart 40-gal electric (EU40T161-403)
- Energy Smart 50-gal electric (EU50T161-403)
Energy Smart vs Standard NU122
| NU122 Standard | NU161 Energy Smart | |
|---|---|---|
| UEF | 0.60-0.62 | 0.65 |
| Tank warranty | 6 years | 9 years |
| Insulation | Standard | Enhanced |
| Premium typical (50-gal gas) | — | +$200-300 vs standard |
$200-300 premium for 50% longer warranty + 5% higher efficiency. Payback inside 3-5 years on gas savings alone, plus the warranty value.
Energy Smart vs AO Smith Signature Select
| Whirlpool Energy Smart 50-gal gas | AO Smith Signature Select 50-gal gas | |
|---|---|---|
| Tank warranty | 9 years | 9 years |
| UEF | 0.65 | 0.65 |
| Typical price | $899-1,099 | $849-1,049 |
Roughly comparable. Signature Select sometimes slightly cheaper at the same Lowe\'s; choose based on availability + brand preference.
Bottom line
The Whirlpool warranty value play. 9-year tank warranty at $200-300 premium over standard — worth it for most buyers planning to keep the unit 8+ years.