ProMax® 66-Gallon Electric Water Heater (2022)

ProMax® 66-Gallon Electric Water Heater (1)

ProMax® 66-Gallon Electric Water Heater (2)

Model ECT-66 (PROMAX)

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Product Description

With a 66-gallon tank and 1 element delivering 4500 watts, the ECT-66 delivers a first hour rating of 72 gallons at an Energy Factor of 0.88. The Coregard™ Aluminum Anode helps protect the tank from the corrosive effects of water, and is accompanied by a 6-year limited warranty.

ProMax® 66-Gallon Electric Water Heater (4)

Where to Buy

Location Unknown

A.O. Smith products are available through independent plumbing contractors.

Enter your city and state or zip code below to find a local installer.

Certifications

ProMax® 66-Gallon Electric Water Heater (5)

6

year

limited warranty

ProMax® 66-Gallon Electric Water Heater (6)

98%

Thermal Efficiency

ProMax® 66-Gallon Electric Water Heater (7)

ProMax® 66-Gallon Electric Water Heater (8)

ProMax® 66-Gallon Electric Water Heater (9)

ProMax® 66-Gallon Electric Water Heater (10)

Tech Specs

  • Nominal Capacity:

    ?Nominal capacity is the representative number pursuant to the safety standard certification process for water heaters

    66
  • First Hour Rating:72
  • Thermal Efficiency:98%
  • Upper Element Wattage:4500
  • Lower Element Wattage:4500
  • Max Wattage:4500
  • Voltage:240
  • Minimum Voltage Required:208
  • Limited Tank Warranty:6 Years
  • Limited Parts Warranty:6 Years
  • Anode:Coregard‰ã¢ 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 1/4"
  • Diameter:20 1/2"
  • Width:20 1/2"
  • Depth:20 1/2"
  • Shipping Weight:178lbs/81kg

DynaClean™ Dip Tube

Helps reduce lime and sediment buildup, maximizes hot water output. Made from long-lasting PEX cross-linked polymer.

CoreGard™ Anode Rod

A. O. Smith’s anode rods have a stainless steel core that extends the life of the anode rod allowing superior tank protection far longer than standard anode rods.

Brass Drain Valve

• Solid brass, tamper resistant, enhanced-flow, ball type, valve.

• Uses a standard female hose fitting that allows for fast and easy draining during maintenance.

(Video) HOW TO RESET ELECTRIC WATER HEATER

• Screwdriver slot features a 1/4 turn radius, for straight-through water flow and a quick and positive shut off.

Permaglas® Glass Coating

Protects steel tank from corrosion and maximizes tank life.

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.

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® certification program.

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

Is this enough hot water?

Kista, 26 164 00

Change Location or Advanced Settings

info

Number of minutes you can enjoy a shower before running out of hot water. Assumes a 2.2 GPM flow rate.

Need to view or change our assumptions? Access the advanced settings.

Close

info

Number of minutes you can enjoy a shower before running out of hot water. Assumes a 2.2 GPM flow rate.

Need to view or change our assumptions? Access the advanced settings.

minutes

single shower length

info

Number of back-to-back showers you can take without running out of hot water. Assumes a 2.2 GPM flow rate and an 8 minute shower length.

Need to view or change our assumptions? Access the advanced settings.

Close

info

Number of back-to-back showers you can take without running out of hot water. Assumes a 2.2 GPM flow rate and an 8 minute shower length.

Need to view or change our assumptions? Access the advanced settings.

showers

back-to-back

info

Number of showers you can take at the same time without running out of hot water.Assumes a 2.2 GPM flow rate and an 8 minute shower length.

Need to view or change our assumptions? Access the advanced settings.

Close

info

Number of showers you can take at the same time without running out of hot water.Assumes a 2.2 GPM flow rate and an 8 minute shower length.

Need to view or change our assumptions? Access the advanced settings.

showers

at the same time

info

Biggest tub this water heater will fill without running out of hot water. Assumes a 5.0 GPM flow rate, and a 67% fill level.

Need to view or change our assumptions? Access the advanced settings.

Close

info

(Video) How To Replace The Lower Element On A Electric Water Heater

Biggest tub this water heater will fill without running out of hot water. Assumes a 5.0 GPM flow rate, and a 67% fill level.

Need to view or change our assumptions? Access the advanced settings.

gallons

maximum tub size

info

Number of minutes required to fill a 55 gallon tub. Assumes a 5.0 GPM flow rate and a 67% fill level.

Need to view or change our assumptions? Access the advanced settings.

Close

info

Number of minutes required to fill a 55 gallon tub. Assumes a 5.0 GPM flow rate and a 67% fill level.

Need to view or change our assumptions? Access the advanced settings.

minutes

time to fill tub

info

The estimated annual cost to operate this water heater in Kista, 26.

Need to view or change our assumptions? Access the advanced settings.

Close

info

The estimated annual cost to operate this water heater in Kista, 26.

Need to view or change our assumptions? Access the advanced settings.

$

estimated energy cost

Many factors affect the actual performance of a water heater. This represents our closest approximation of your likely experience with this water heater in Kista, 26, but actual performance may vary depending on factors beyond our ability to control or estimate. To view or adjust our assumptions of the most common factors that impact this product’s performance in Kista, 26, please view the advanced settings. *Annual energy costs are estimated from the energy efficiency of each water heater, your household’s estimated water usage & set temperature, the average groundwater temperature for your location, and residential energy prices as reported by the Department of Energy.

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Location

Nolensville, TN 37135

Power Source

Electricity

Available Space

84" x 28" x 28"

(Video) Water Heater Not Heating? Thermostat Testing

Shower Flow Rate

2.1 gallons/minute

Bathtub Flow Rate

5 gallons/minute

Tank Set Point

135°

Average Air Temperature

67.5°

Mix Temperature

104°

Tub Max Fill Level

2/3

Average Hot Water Usage

64.3 gallons

Mobile Home

No

The showers in homes built after 1992 typically have a flow rate of 2.1 Gallons Per Minute.

Bathtub faucets typically have a flow rate of 5 Gallons per Minute.

The initial setting is 120°F, but you're in control after installation.

What’s the average air temperature in the room where your water heater will be installed? The national average is 67.5˚.

The average US household uses 64.3 gallons of hot water each day.

Cold Water (average)

57°

Cold Water (winter)

45°

Emissions

No Emissions Requirements

Electricity

$0.0977/kWh

Natural Gas

$9.98/Mcf

Propane

(Video) How To Reset The Reset Button On a Electric Hot Water Heater Pretty Easy

$2.484/gallon

The average temperature is °F .

The winter temperature is °F .

The average cost per kWh is $ .

The average cost per Mcf is $ .

The average cost per Gallon is $ .

placeWhere to BuyA. O. Smith water heaters are available through your local plumbing professional.

Product Features & Options

DynaClean™ Dip Tube

Helps reduce lime and sediment buildup, maximizes hot water output. Made from long-lasting PEX cross-linked polymer.

CoreGard™ Anode Rod

A. O. Smith’s anode rods have a stainless steel core that extends the life of the anode rod allowing superior tank protection far longer than standard anode rods.

Brass Drain Valve

• Solid brass, tamper resistant, enhanced-flow, ball type, valve.

• Uses a standard female hose fitting that allows for fast and easy draining during maintenance.

• Screwdriver slot features a 1/4 turn radius, for straight-through water flow and a quick and positive shut off.

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.

Certifications

6

year

limited warranty

98%

Thermal Efficiency

ProMax® 66-Gallon Electric Water Heater (11)

ProMax® 66-Gallon Electric Water Heater (12)

ProMax® 66-Gallon Electric Water Heater (13)

ProMax® 66-Gallon Electric Water Heater (14)

Product Specifications


Tech Specs
Nominal Capacity:

?Nominal capacity is the representative number pursuant to the safety standard certification process for water heaters

66
First Hour Rating:72
Thermal Efficiency:98%
Upper Element Wattage:4500
Lower Element Wattage:4500
Max Wattage:4500
Voltage:240
Minimum Voltage Required:208
Limited Tank Warranty:6 Years
Limited Parts Warranty:6 Years
Anode:Coregard䋢 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 1/4"
Diameter:20 1/2"
Width:20 1/2"
Depth:20 1/2"
Shipping Weight:178lbs/81kg

Literature

  • Technical Documents
  • Marketing Resources
  • Tech Docs
  • Marketing

Technical Documents

Marketing Resources

Incentives

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

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

Photos

Please click here to download the hi-resolution images.

Need More Hot Water?

There's no reason to run out of hot water. If you're not sure that the ECT-66 (PROMAX) provides enough hot water for your needs, consider these:

(Video) AO Smith Electric Water Heater Replace Anode Rod #9003944005

FAQs

How long does an AO Smith Promax water heater last? ›

How Long Do AO Smith Water Heaters Last? Most AO Smith warranties range between 6 and 12 years, usually closer to ten. This means that the manufacturers fully expect your water heater to last at least a decade, and possibly twice that even after it goes out of warranty.

How old is my AO Smith Promax water heater? ›

This can be determined by looking at the first four numbers, ignoring any letter that may start the serial number. The first two numbers represent the year the heater was built. If your heater was built before 2008, the next two numbers represent the month.

Do they still make 65 gallon water heaters? ›

These water heaters have been completely discontinued, and you won't get another opportunity to install a low-price system. While other electric water heater types (such as heat pump water heaters) may suffice as a replacement, these high-efficiency units tend to be pricier.

How do you relight a Promax water heater? ›

How to light water heater PILOT light - A.O. Smith Promax - YouTube

Can an electric water heater last 25 years? ›

It is unusual for used water heaters to last 30 years. Most tank water heaters have an average lifespan of 8 to 12 years, and tankless water heaters can last as long as 20 years.

How often should a water heater be replaced? ›

How Long Do Water Heaters Last. — The majority of water heaters last between eight and ten years. While ten is the age at which heater replacement is generally recommended, the actual need to replace a heater could arise before or after this timeline.

How long do electric water heaters last? ›

While today's water heaters are better designed than older models, they still require regular maintenance in order to prolong their lives. With regular inspection, draining, and flushing, you can expect a gas water heater to last anywhere from 8-12 years and an electric water heater to last anywhere from 10-15 years.

Can you tell how old a water heater is by the serial number? ›

The year of manufacture is noted by the first letter of the serial number, and the month is the second letter. Is your water heater's brand not listed above? If your water heater's brand isn't listed, check NACHI's or The Water Heater Hub's serial decoder to learn more.

How much does a 65 gallon water tank cost? ›

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How much does a 65 gallon water heater weigh? ›

The Rheem Professional Prestige Hybrid Water Heater (65 Gallon) weighs 262 lb (118.8 kg) and has a tank capacity of 65 gal (246 L).

What is a hybrid water heater? ›

A hybrid heat pump water heater works like a refrigerator but in reverse. While a refrigerator removes heat from an enclosed box and releases it to the surrounding air, a hybrid heat pump water heater captures heat from the surrounding air and then transfers it to water in an enclosed tank.

Can you manually light a water heater with electronic Pilot? ›

They use electronic ignition to ignite the gas. Do not attempt to manually light an electronic ignition system. If the pilot light is not lit: Attempt to re-light the pilot light, following the instructions posted on your water heater.

How long does it take a water heater to heat up? ›

Now, let's get back to the question at hand: About how long should it take your hot water heater to do its thing? For gas water heaters, it usually takes on average 30 to 40 minutes for the water in the tank to be completely heated.

How much is a ProMax water heater? ›

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How long should a hot water heater last? ›

— The majority of water heaters last between eight and ten years. While ten is the age at which heater replacement is generally recommended, the actual need to replace a heater could arise before or after this timeline.

How long will a 6 year water heater last? ›

Proper Water Heater Care

You can purchase a 6-year water heater and have it run for eight years or more if you take proper care of it with routine maintenance from professionals.

Is Aerosmith a good water heater? ›

Do not EVER buy a water heater from AO Smith. They do NOT honor their warranty, and are IMPOSSIBLE TO reach! I bought a top-of-the line AO Smith heater from Lowes less than 2 years ago, with a 12-year warranty. Even thought it is barely used, the heating element went bad in it 2 months ago.

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