WaterClue is reader-supported. As an Amazon Associate we earn from qualifying purchases. Amazon prices and product images are sourced live from the Amazon Product Advertising API and may not reflect current Amazon listings — confirm price and availability at Amazon before purchase. Full affiliate disclosure.

Size Calculator Best-Of
Whirlpool

Whirlpool 30-Gallon Atmospheric Natural Gas Water Heater

Model NU30T122-403
3.9/5 from 240 ratings
from Check current price
Price via Amazon
Check Price on Amazon
Free shipping with Amazon Prime · 30-day returns
Btu
32000
Venting
Atmospheric
Fuel Type
Natural Gas
Tank Type
Tank
Energy Factor
0.6
Warranty Years
6

Whirlpool 30-Gallon Atmospheric Natural Gas Water Heater Review

The Whirlpool 30-Gallon Atmospheric Natural Gas is Whirlpool's smaller-capacity atmospheric gas tank. Built by A.O. Smith with Whirlpool branding for Lowe's channel.

Specs: 38,000 BTU input, UEF 0.58, 60-gallon FHR, 6-year tank and parts warranty. Atmospheric vent through B-vent. Electronic ignition. Magnesium anode rod.

The 30-gallon gas capacity is the smallest residential gas tank size considered a primary water heater. Right answer for single-person households with gas service, very small apartments, in-law suites with separate water heater, vacation cabins with light use.

About $399 at Lowe's, $1,050 installed. For 2+ person primary residences, the upgrade to 40-gallon or 50-gallon Whirlpool gas tanks is usually the better choice.

Pros
  • Natural gas combustion — faster recovery than electric resistance at comparable tank size
Cons
  • Below-average UEF 0.6 — modern standard models reach 0.65+, condensing 0.95+
  • 6-year warranty — below the 8–12 year average for premium models in this class
  • Atmospheric venting requires vertical B-vent — less routing flexibility than power-vent or condensing alternatives
  • Small 30-gallon reserve — supplemental or 1–2 person use only

Full Specifications

Brand
Whirlpool
Model Number
NU30T122-403
Btu
32000
Venting
Atmospheric
Fuel Type
Natural Gas
Tank Type
Tank
Energy Factor
0.6
Warranty Years
6
Capacity Gallons
30
First Hour Delivery
58

Similar Water Heaters

Rinnai

Rinnai RU199iN Sensei Tankless Water Heater

199000 Natural Gas Tankless
Check current price
4.8
View Details
Rheem

Rheem Marathon Lifetime 50-Gallon Electric Water Heater

4500 Electric Tank
Check current price
4.8
View Details
Triangle Tube

Triangle Tube Smart 80 Indirect Water Heater 80-Gallon

Indirect Indirect 0.88
Check current price
4.7
View Details