Whirlpool water heaters aren\'t actually made by Whirlpool. They\'re manufactured by AO Smith under a brand licensing arrangement that lets AO Smith sell the same product under three different badges at Lowe\'s — State, AO Smith Signature, and Whirlpool — each at slightly different price points and warranty tiers. The Whirlpool name is the budget cross-shop: homeowners who recognize the Whirlpool appliance brand from washers, dryers, and refrigerators reach for the familiar name without realizing it\'s the same AO Smith manufacturing as the other two brands at the same store.
Four product families cover the catalog:
This is the question that confuses every Lowe\'s water heater shopper. Quick answer: all three brands are manufactured by AO Smith. They differ in:
| Whirlpool | State ProLine | AO Smith Signature Select | AO Smith Signature Premier | |
|---|---|---|---|---|
| Manufactured by | AO Smith | AO Smith | AO Smith | AO Smith |
| Tank warranty (50-gal gas) | 6 years | 6 years | 9 years | 12 years |
| Energy Smart variant warranty | 9 years | — | — | — |
| Tier positioning | Value (brand recognition) | Value (specialty brand) | Mid | Premium |
| Typical price (50-gal gas standard) | $649-849 | $749-949 | $849-1,049 | $949-1,249 |
| Sold at | Lowe\'s primarily | Lowe\'s + plumbing wholesale | Lowe\'s + plumbing wholesale | Lowe\'s + plumbing wholesale |
The biggest practical reason to choose Whirlpool over State at Lowe\'s: the Energy Smart variants get a 9-year tank warranty at typically lower price than equivalent State or AO Smith Signature Select. Energy Smart is Whirlpool\'s only major differentiator vs the sister brands:
For warranty-priority Lowe\'s shoppers who recognize the Whirlpool name, Energy Smart is the value play.
AO Smith has multiple brand badges for a strategic reason: brand recognition. Many homeowners replacing a water heater don\'t research brands deeply — they walk into Lowe\'s and gravitate toward whatever brand name they recognize from elsewhere in their home. Whirlpool is the dominant appliance brand for laundry and refrigeration; many homes have a Whirlpool washing machine + Whirlpool dryer + Whirlpool refrigerator. When that homeowner sees Whirlpool on a water heater, they pick it without comparison.
This isn\'t deceptive — Whirlpool licenses its name to AO Smith for water heaters specifically because Whirlpool (the appliance company) doesn\'t make water heaters and has no intent to. The arrangement gives AO Smith a third Lowe\'s brand badge, and Whirlpool gets licensing royalties. The product itself is identical to the State and AO Smith Signature equivalents at the same store.
Whirlpool gas units use the same LED flash code system as State and AO Smith Signature (same gas valve hardware). See our State error codes hub for the complete reference — the codes translate directly to Whirlpool units:
Electric Whirlpool units use the same ECO red button reset as State and AO Smith Signature.
| Product | Tank | Parts | Labor |
|---|---|---|---|
| Standard atmospheric gas (NU122) | 6 years | 6 years | 1 year |
| Energy Smart (NU161 / EU161) | 9 years | 9 years | 1 year |
| Power Vent (NU-PWVT) | 6 years | 6 years | 1 year |
| Direct Vent | 6 years | 6 years | 1 year |
| Standard electric (EU122) | 6 years | 6 years | 1 year |
| Hybrid Heat Pump (UE6T-H) | 10 years | 10 years | 1 year |
Whirlpool Energy Smart 9-year warranty is the brand\'s strongest selling point. Hybrid Heat Pump 10-year matches AO Smith Voltex and State Premier Hybrid. See Whirlpool warranty hub.
Whirlpool serial numbers use AO Smith\'s encoding scheme — same as State and AO Smith Signature. First 4 characters = year + week. See our Whirlpool age lookup guide.
Whirlpool parts interchange with State and AO Smith Signature parts in most cases (same manufacturing). Available at Lowe\'s, Amazon, and AO Smith distribution:
Whirlpool install requirements are identical to State and AO Smith Signature equivalents:
Full requirements on our Whirlpool install guide.
Standard tank water heater maintenance — annual T&P test, annual flush, anode rod inspection every 2-3 years. Same intervals as State and AO Smith Signature. See Whirlpool maintenance hub.
Whirlpool sells primarily at Lowe\'s. Some plumbing wholesalers stock select Whirlpool models via AO Smith distribution. Amazon stocks select Whirlpool tank models from authorized sellers. Home Depot doesn\'t carry Whirlpool water heaters (HD favors Rheem). See Whirlpool dealers hub.
Whirlpool water heater customer service: 1-877-817-6750. Hours: Monday-Friday, 7 AM - 7 PM Central. Operates under AO Smith corporate (the actual manufacturer) but maintains Whirlpool-specific support staff. Hold times typically 10-20 minutes.
Whirlpool reviews skew positive on value at Lowe\'s. The dominant theme: reliable AO Smith manufacturing at a lower price than equivalent AO Smith Signature, with brand recognition that some homeowners value. Energy Smart variants get particularly positive reviews because the 9-year warranty is a real upgrade vs base 6-year. See Whirlpool owner reviews.
Whirlpool is the AO Smith manufacturing wearing a brand badge most homeowners already recognize. For Lowe\'s shoppers who prefer the Whirlpool name over State, the product is the same — pick Energy Smart for the 9-year warranty, standard NU122 for budget priority, Power Vent for chimneyless homes. For warranty-priority buyers, AO Smith Signature Premier at the same Lowe\'s offers 12-year warranty at higher price. For tankless or premium-channel buyers, look elsewhere — Whirlpool only makes tank water heaters.