A 40-gallon electric water heater can suit a household with moderate hot-water needs, but tank size is only part of the decision. Compare each model’s first-hour rating, heating elements, shape, electrical requirements, and warranty before choosing. The three options below include two tall or short GE models and a Rheem professional-grade tank.
Table of Contents
Quick Comparison
| Product | First-hour rating | Heating elements | Standout feature |
|---|---|---|---|
| GE Appliances 40-Gallon Tall Electric Water Heater | 57 gallons | Dual 4500W | True 40-gallon capacity and 8-year tank and parts warranty |
| GE 40-Gallon Short Electric Water Heater with WiFi | 66 gallons | Dual 5500W | App controls and 12-year tank and parts warranty |
| Rheem PROE40 T2 RH95 40-Gallon Water Heater | 55 gallons | Dual 4500W | 0.93 uniform energy factor |
Our Picks: Best 40 Gal Electric Water Heater reviews
GE Appliances 40-Gallon Tall: A Balanced Pick for Everyday Demand
This tall GE model pairs a true 40-gallon tank with a 57-gallon first-hour rating. That rating can help you compare how much hot water the heater can deliver during a busy stretch, though your actual supply depends on household use and installation conditions.
Dual 4500W elements run at 240V. The product information lists a 25-amp requirement, so check the unit’s installation instructions and your home’s electrical setup with a qualified installer before buying. Its corrosion-resistant anode rod, brass drain valve, and bottom-replenishing inlet tube are practical details aimed at tank protection and hot-water delivery.
This is a straightforward option if you want a standard tall tank and do not need app-based controls. Its 8-year tank and parts warranty is shorter than the WiFi-enabled GE model’s 12-year coverage. The supplied listing data does not indicate current availability, so check the product page before making plans around this model.
Pros:
- True 40-gallon tank capacity
- 57-gallon first-hour rating
- Corrosion-resistant anode rod and rust-proof brass drain valve
- Includes an 8-year tank and parts warranty, plus 1-year labor coverage
Cons:
- No WiFi or app controls are listed
- The listed electrical requirement should be confirmed for your home before installation
Verdict: Choose this GE if you want a tall 40-gallon tank with a solid first-hour rating and practical corrosion-control features, provided its electrical requirements and availability work for you.
GE 40-Gallon Short with WiFi: Best for Remote Controls and Faster Recovery
This short GE model keeps a true 40-gallon capacity while adding built-in WiFi. Through the SmartHQ app, you can monitor tank levels, adjust temperature, set vacation schedules, and receive alerts. Those controls may be useful if you want to manage settings without going to the heater.
Its dual 5500W stainless steel elements are rated for quick recovery, and the listed first-hour rating is 66 gallons—the highest among these three options. Stainless steel elements and an anode-sensing alert add useful maintenance details. The shorter format may fit some spaces where a tall unit is a poor match, but confirm the actual installation clearances and connections before ordering.
The main tradeoff is that this model has more features and higher-wattage elements than the other picks, so you should confirm the electrical requirements with the manufacturer’s installation instructions and a qualified installer. It also has the strongest listed warranty of this group: 12 years for the tank and parts, plus 1-year labor coverage. The supplied listing data does not indicate current availability, so verify the product page before purchase.
Pros:
- 66-gallon first-hour rating
- App controls for temperature, tank monitoring, schedules, and alerts
- Dual 5500W stainless steel heating elements
- 12-year tank and parts warranty, plus 1-year labor coverage
Cons:
- Electrical compatibility should be checked before installation
- Smart features may not be useful if you prefer a basic heater without app controls
Verdict: Pick this GE if the short format suits your installation and you value remote controls, a higher listed first-hour rating, and longer warranty coverage.
Rheem PROE40 T2 RH95: A No-Frills 40-Gallon Choice
The Rheem PROE40 T2 RH95 is a 40-gallon electric tank with dual 4500W heating elements and an automatic thermostat. Its 55-gallon first-hour rating is lower than the two GE models in this comparison, but it still gives you a useful reference point when weighing expected hot-water demand.
This model requires a 240V connection, so it is important to check that your home’s wiring and the installation location are suitable. The listed 0.93 uniform energy factor (UEF) provides a standardized efficiency figure for comparing water heaters. It is not a promise of a specific utility-bill reduction, which depends on how the heater is used and other home factors.
Unlike the WiFi GE, the listed Rheem features focus on core heating and thermostat operation rather than remote controls or app alerts. That simpler feature set may suit shoppers who want a conventional tank and do not need connected functions. Warranty details are not included in the supplied product information, so confirm coverage on the product listing before deciding.
Pros:
- 40-gallon tank with dual 4500W elements
- 55-gallon first-hour rating
- Automatic thermostat
- Published UEF of 0.93 for comparison
Cons:
- Lower listed first-hour rating than either GE option
- Requires a 240V connection and has no WiFi features listed
Verdict: Consider the Rheem if you want a conventional 40-gallon electric heater with a published UEF and your installation supports its 240V connection.
How to Choose a 40-Gallon Electric Water Heater
Match the First-Hour Rating to Your Routine
A 40-gallon tank does not tell the whole story about hot-water output. The first-hour rating estimates how much hot water a heater can deliver during a high-use period, including the water already in the tank and the heater’s recovery. In this comparison, the listed ratings range from 55 to 66 gallons. Think about when showers, laundry, and other hot-water uses overlap, then compare that pattern with the product’s rating.
Check the Shape and Installation Space
The GE models are described as tall and short, which can matter when fitting a heater into a utility area or replacing an existing unit. Do not rely on the shape name alone: check the product’s dimensions, required clearances, plumbing connections, and access for maintenance against your available space. The supplied details do not give specific dimensions for these models.
Confirm Electrical Requirements
Electric tank heaters need a compatible electrical connection. The tall GE model is listed as 240V and 25 amps, while the Rheem requires 240V. The supplied description for the short GE does not state its voltage or amperage. Verify the installation manual and have a qualified professional confirm the circuit and wiring before purchase or installation.
Decide Whether Smart Controls Matter
The short GE model includes WiFi and SmartHQ app controls for temperature adjustments, tank monitoring, schedules, and alerts. These features can help if you want to manage settings remotely. The other two listings do not specify connected controls, so they may be a better fit if you want fewer features to manage.
Compare Warranty Coverage and Maintenance Features
The GE models list their warranty terms: 8 years for the tall model and 12 years for the short model, with 1-year labor coverage for each. The Rheem product details provided here do not state a warranty, so check its listing or documentation. Also compare the listed maintenance features, such as the GE models’ anode-related features and the tall model’s brass drain valve.
Use Efficiency Figures Carefully
The Rheem’s listed UEF of 0.93 can help you compare standardized efficiency information. However, that number alone does not predict your exact energy costs. Household usage, temperature settings, installation, and local utility rates all affect what you pay to heat water.
Frequently Asked Questions
Is a 40-gallon electric water heater enough for a family?
It depends on how many people use hot water and whether showers, laundry, and other needs happen at the same time. The GE product descriptions position their 40-gallon models for households of two to four people, but your use pattern and the unit’s first-hour rating matter too.
What does the first-hour rating mean?
It is a measure of how much hot water a heater can deliver in an hour starting with a full tank. It accounts for both stored hot water and recovery while hot water is being used. A higher figure can be helpful during periods of concentrated demand, but it does not guarantee a particular result in every home.
Which model has the highest first-hour rating?
The GE short electric model has the highest listed rating in this group at 66 gallons. The tall GE is listed at 57 gallons, and the Rheem at 55 gallons.
Can I install one of these heaters myself?
Installation depends on your home’s electrical and plumbing setup, local requirements, and the heater’s instructions. The Rheem requires a 240V connection, and the tall GE listing specifies 240V and a 25-amp requirement. Have a qualified installer confirm compatibility and handle the work if needed.
What is the difference between the GE tall and short models?
The tall model has dual 4500W elements, a 57-gallon first-hour rating, and an 8-year tank and parts warranty. The short model adds WiFi controls, has dual 5500W elements, a 66-gallon first-hour rating, and a 12-year tank and parts warranty. Check dimensions and electrical requirements before choosing between them.
Does the Rheem’s 0.93 UEF guarantee lower energy bills?
No. UEF is a standardized efficiency measure, not a guarantee of a specific bill. Your energy costs depend on factors such as household hot-water use, settings, installation, and local electricity rates.
Final Recommendation
For the strongest combination of listed hot-water output, app controls, and warranty coverage, the GE short model is the standout—if its size and electrical requirements suit your installation. The tall GE is a simpler alternative with a 57-gallon first-hour rating, while the Rheem is worth considering if you prefer a conventional model and want a published UEF figure. Before choosing any of them, confirm current availability, installation fit, electrical compatibility, and warranty terms on the product listing.
