State ProLine 66-Gallon Electric Water Heater
Model ES6-66-DORT
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Price as of May 2026
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Voltage
240V
Amperage
30A
Fuel Type
Electric
Tank Type
Tank
Energy Factor
0.93
Warranty Years
6
State ProLine 66-Gallon Electric Water Heater Review
The State ProLine 66-Gallon Electric is A.O. Smith's plumber-channel mid-large capacity electric tank. The ProLine designation identifies commercial-residential crossover positioning.
Specs: 66 gallons stored, two 4500W heating elements (240V), UEF 0.93, 80-gallon FHR, 6-year tank and parts warranty. Glass-lined steel tank, magnesium anode rod.
The 66-gallon capacity covers 4-5 person households where 50-gallon would be tight but 80-gallon is unnecessary. About $749 plumber-channel pricing, $1,400 plumber-installed.
For households with basement install supporting heat-pump, the upgrade to AO Smith Voltex Premium HPTU-66 (heat-pump operating cost 75% lower) usually makes that the better economic choice.
Full Specifications
Brand
State
Model Number
ES6-66-DORT
Voltage
240V
Amperage
30A
Fuel Type
Electric
Tank Type
Tank
Energy Factor
0.93
Warranty Years
6
Capacity Gallons
66
First Hour Delivery
78
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