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3.0 | 2 Reviews

GE® Smart 40 Gallon Tall Electric Water Heater

GE Appliances GE40T12BLM


  • Real Capacity
  • Built-in WiFi
  • Leading Performance
  • Quick Recovery

Quick Specs

  • Type: Small Water Heater
  • Width: 20"
  • Height: 65 1/2"
  • Depth: 20"
  • Energy Star Rated: No

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Image Feature

Easy Set Up

Image Feature

Digital Display

Make easy, accurate adjustments at the touch of a button

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Real Capacity Get the most hot showers from the only water heater that holds a true 40 gallons of water (Compared to 40 gallon electric steel tank water heaters per DOE rated gallon capacity)

Built-in WiFi Easily adjust temperatures, set vacation mode schedules and receive notifications with Built-in WiFi powered by SmartHQ

Leading Performance Live comfortably with this best in class unit that delivers 66 gallons of hot water in the first hour (Measured through DOE First Hour Rating)

Quick Recovery Two 5500W heating elements quickly increase water temperature for hot water when you need it

Household Size Provide hot water for the whole family of 2 to 4 persons

Anode Sensing Notifies you when your anode rod needs replacing to help extend the life of your tank

Stainless Steel Heating Elements Ultra-durable stainless-steel heating elements resist rust and corrosion

Inlet Tube Replenishes water from the bottom of the tank to maximize hot water delivery

Brass Drain Valve Rust-proof construction can be counted on to provide long-lasting service

Digital Display Make easy, accurate adjustments at the touch of a button


  • Real Capacity
  • Built-in WiFi
  • Leading Performance
  • Quick Recovery
  • Household Size
  • Anode Sensing
  • Stainless Steel Heating Elements
  • Inlet Tube
  • Brass Drain Valve
  • Easy Set Up
  • Digital Display
Unit Capacity 40 Gallons
App Filter - WiFi Connect Built-In
App Filter - Product Type Water Heaters Electric Standard
App Filter - Tank Diameter 18 1/4 in.-21 3/4 in.
App Filter - Vacation Mode Yes
App Filter - Capacity Water Heater 40-49 gallons
Color Appearance Gray
Integrated Energy Factor 0.92
Heating - Electric - Heater Watts 5500/5500
Electrical Connection Direct-Wire
Operating Water Pressure 20-125 PSI
Volts/Hertz 240V; 60Hz
First Hour Rate (FHR) 66 Gallons
Voltage (MAX) 240 V
Electrical Circuit Required Dedicated 30 Amp Min.
Warranty Notes See written warranty for full details
Parts Warranty 12-year limited
Labor Warranty 1-year limited
Product Height (to top of water inlet/outlet connections) 65.5 in
Approximate Shipping Weight 139 lb
Overall Width 20 in
Overall Height 65.5 in
Product Height (to top of unit) 64 in
Net Weight 127 lb
Product Diameter 20 in
Overall Depth 20 in
Connection Sizes - Water Inlet (MNPT) 3/4"
Connection Sizes - Hot Water Outlet (MNPT) 3/4"
Control Type Electronic with Digital Display
Height Description Tall
Fuel Type Electric
Configuration Tall
Operating Modes Normal
Drain Valve Type Brass
Temperature Setting Factory Default 120° F
Sensing Anode Yes
Product Type Electric Electronic
WiFi Connect Built-In
Family Size 2-4 People
Water Connection Location Top
Overheat Protection Yes
Vacation Setting Yes
Diagnostic Feedback Yes
Temperature Setting 100-140° F Range

Quick Specs

  • Appearance

  • Type: Small Water Heater

  • Dimensions

  • Width: 20"
  • Height: 65 1/2"
  • Depth: 20"

  • Features

  • Energy Star Rated: No

Energy Guide

Installation Instructions

Quick Reference Guide

Quick Specs

Service Manual

Use and Care Manual

Submittal Sheet

Specification Guide

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Professional delivery and installation is available for every product we sell. We would be happy to coordinate delivery and installation for you.

Extended warranties are usually very inexpensive and can save you thousands in the future. Some can even cover extra costs that result, such as cost of food that spoils when your fridge dies. It's simple and inexpensive to purchase extended warranties and one of the smartest ways to protect your investment.

Appliances can be large, heavy and expensive. You probably don't have the special tools or expertise needed to fix them in a crisis. If you can spare a few thousand dollars without batting an eyelash for new appliances should they break tomorrow, don't buy a warranty. But if you're like most of us, protect yourself by purchasing inexpensive extended warranties when you buy a new product and save yourself big money in the long run.

3.0 out of 5

50% of reviewers recommend this product.

2 Stars

What's the point of WiFi connectivity …

Kdrisc57 12/26/2021

What's the point of Wi-Fi connectivity when you can't schedule the water heater from your phone. Yes you can turn it off, you can turn it on, you can change the temperature, but you can't schedule it. I certainly thought when I purchased the water heater that Wi-Fi connectivity would allow me to schedule when the water heater operates… Disappointed
Originally posted on

No, I do not recommend this product










4 Stars

So far so good

Kjlyut 10/10/2021

There were couple of cosmetic dents on the body but whose fault is that I don't know, got it from Costco.
Originally posted on

Yes, I recommend this product