ProMax® 80-Gallon Electric Water Heater

ProMax® 80-Gallon Electric Water Heater

Model ECT-80

ProMax Electric Tank Water Heater ECT-80 is rated 4.4375 out of 5 by 16.
Rated 4 out of 5 by from hookups matched old water heater,so far heats well just installed today, water heated quickly, seems to be insulated well.
Date published: 2014-02-10
Rated 5 out of 5 by from Replaced older solar hot water tanks Recommended by professional Len the Plumber as top of the line. Replaces two old tanks from removed solar hot water system
Date published: 2014-03-02
Rated 5 out of 5 by from Great features and style This product is very efficient. Hot water is always available when needed.
Date published: 2014-03-28
Rated 5 out of 5 by from Great heater! I bought this product a few days ago. Our first one lasted 25 years. What more could you ask for?
Date published: 2014-04-07
Rated 3 out of 5 by from Too new yet to really comment... We purchased a new home recently and they installed the aforementioned product AO hot water tank....we have had issues with not receiving hot water fast enough and long enough.
Date published: 2014-05-03
Rated 5 out of 5 by from Our last one was 25 years old and still going! We chose AO Smith at the recommendation of my brother, a licensed plumber, who always recommends AO Smith heaters. We replaced with the same model we already had which was 25 years old and still going strong. Look forward to another 25 years with this one!
Date published: 2014-05-06
Rated 5 out of 5 by from Best product available to the market I replaced a 50 Gallon A.O. Smith water heater that lasted 28 years. The new model I purchased holds 80 gallons. I love this product!
Date published: 2014-05-11
Rated 4 out of 5 by from AO ELECTRIC ECT 80 200 WATER HEATER I purchased my first AO electric heater MODEL ECT 80 200 in 2009 because my brother, family and friends said it was an excellent product. Even the inernet said the same. I agree it is an excellent product accept I'm glad I purchased this model with the 6 year warrenty because it leaked with only 5 years of ownership. I certainly appreciate a good quality product and I appreciate that the unit was replace on warrenty at no cost accept it cost me $711.50 for labor charged by Maryland Sewer & Plumbing Services, Pasadena MD. I really believe you do want to know that you product failed to meet your standard and my wife seen the leake before it leaked in our new basement. I can't recommend enough that you work towards creating a product that can withstand the water conditions in Ann Arundel County, Md and inform customers that you have a special water heater for well vice city water. I know you stand behind your products. I do believe you should reimburse our family parcial cost for the failer of the unit to meet your specification. Again, it's a great product but could it use some better non corrosion material in construction to last longer. Thank you for your time, Mr. Don Tyler, Pasadena Md, 2 Jun 14.
Date published: 2014-06-02

With a 80-gallon tank and 1 element delivering 4500 kilowatts, the ECT-80 delivers a first hour rating of 81 gallons at an Energy Factor of 0.86. The Coregard™ Aluminum Anode helps protect the tank from the corrosive effects of water, and is accompanied by a 6-year limited warranty.

Where to Buy

Where to Buy

Woodbridge, NJ 07095

Location #1


Edison, NJ

Se Habla Español

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Location #2

William J. Guarini Plumbing

Jersey City, NJ

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Location #3

Authorized Heating

Brooklyn, NY

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View All List My Company Here

Product Features & Options

DynaClean™ Diffuser Dip Tube

Thanks to the improved technology, the inlet tube features water jets that redirect incoming cold water into the tank, creating turbulence, which helps reduce lime build-up, therefore maintaining heater efficiency.

CoreGard™ Anode Rod

A. O. Smith’s exlusive aluminum anode has a stainless steel core, which protects the tank against corrosion longer than ordinary mild steel anodes.

Brass Drain Valve

Our brass drain valve is more durable and tamper-resistant than an ordinary plastic drain valve, which contributes to improved safety and reliability.

Permaglas® Glass Coating

Protects steel tank from corrosion and maximizes tank life.

How it Works

Cold water enters the water heater through an internal “dip tube” which forces the cold water to the bottom of the tank and pushes hot water out through the outlet connection. This arrangement provides the most hot water for a given tank size. There are two thermostats on a typical residential water heater. The thermostat at the bottom controls the lower heating element while the top thermostat controls the upper heating element. Usually, only one heating element is active at a time. Because the lower element sees the cold water first, the lower heating element does most of the work, while the upper heating element is used only when the entire tank is cold. Because water can corrode the steel tank, we glass line the inside of the tank and install an anode rod to help reduce corrosion. The temperature and pressure relief valve is a safety device designed to open if the internal temperature or pressure of the tank exceeds certain limits. Water heaters should be large enough to provide adequate hot water even when temperatures are cold and household demand is greatest.




limited warranty


energy factor

UL Listed means that the product met UL's safety requirements
CSA International Low Lead Content Certification in compliance with U.S. and Canadian safety standards on gas components
AHRI Air-Conditioning, Heating and Refrigeration Institute
The Blue Diamond formula is enriched with a high level of zircon, producing a coating that is harder and more water-resistant than any other in the industry

Product Specifications

Tech Specs
Gallon Capacity: 80
Recovery Gallons: 21
First Hour Rating: 81
Energy Factor: 0.86
Thermal Efficiency: 98%
Upper Element Wattage: 4500
Lower Element Wattage: 4500
Max Wattage: 4500
Limited Tank Warranty: 6 Years
Limited Parts Warranty: 6 Years
Anode: Coregard™ Aluminum Anode
Foam Insulation: 2"
Self Cleaning: Yes
T&P Relief Valve: Yes
Water Connection Location: Top
Water Connection Size: 3/4"
Dimensions & Venting
Type: Tall
Height: 60 1/2"
Diameter: 22 1/2"
Width: 22 1/2"
Depth: 22 1/2"
Shipping Weight: 208lbs/94kg


Rebate and incentive programs provide cash-back to consumers for the purchase of appliances that meet certain energy efficiency standards. Often, these standards are tied to the ENERGY STAR® program.

Cash for Appliances is designed to encourage the purchase of energy efficient appliances. Consumers who purchase ENERGY STAR® or CEE qualified appliances can receive cash rebates. Most states are offering rebates in the $50 to $250 range.


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Need More Hot Water?

There's no reason to run out of hot water. If you're not sure that the ECT-80 provides enough hot water for your needs, consider these:

ProMax® 119-Gallon Electric Water Heater

  • 6 Year Limited Warranty
  • 112 First Hour Rating

ProMax® 40-Gallon Electric Water Heater

  • 6 Year Limited Warranty
  • 52 First Hour Rating

ProMax® 50-Gallon Electric Water Heater

  • 6 Year Limited Warranty
  • 60 First Hour Rating

ProMax® 55-Gallon Electric Water Heater

  • 6 Year Limited Warranty
  • 67 First Hour Rating