Best 100-Gallon Electric Water Heaters
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Top 5 Best 100-Gallon Electric Water Heaters (March 2024)πŸ₯‡

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Charlie W. Palmer
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Last Updated: 19 March 2024

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In this article, we’re going to be talking about the best 100-gallon electric water heaters that are available on the market.

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βœ…Why use an electric water heater?

According to this study carried out by Consumer Reports, electric water heaters are an energy-efficient way of getting hot water.

Electric hot water heaters are generally more easier to use when comparing against an equivalent gas unit.

The installation and maintenance costs of these units is often lower, as they don’t require venting.

Additionally, electric water heaters can be used in any home that simply has electricity, whereas not every home has gas, with apartment buildings often only having electricity available for safety reasons.

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πŸ’§Top Considerations Before Purchasing

  • Technical Specs – We’ve done our very best to outline each heater’s technical specs, including UEF (Energy Efficiency), FHR (First Hour Rate), and Recovery Rate, so you have all of this information available when making any comparisons between models.
  • General Specs – We’ve also included information regarding the units physical dimensions and weight
    • Price – Price information has also been specified, with $ representing the lowest price and $$$$$ representing the highest. We realize that everyone has a unique budget, so this is an important consideration
    • Warranty – We’ve displayed warranty information where possible.
  • Customer Reviews/Ratings – We’ve gone about researching only the highest quality 100-gallon electric hot water heaters to include within this article, therefore you can be confident in knowing that any of these units are a great choice.

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We’ve listed the following 100-gallon water heaters in order of cost, from the lowest price at the top ($) to the largest price ($$$$$) at the bottom:

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100 Gallon Electric Water Heaters Review – Top 5

  • Westinghouse 100 Gal. 10 Year 16,500-Watt Electric Water Heater with Durable 316 l Stainless Steel Tank – $$$ – Skip to section
  • Westinghouse 115 Gal. 10 Year 13,500-Watt Electric Water Heater with Durable 316 l Stainless Steel Tank – $$$ – Skip to section
  • Westinghouse 115 Gal. Lifetime 5500-Watt Electric Water Heater with Durable 316 l Stainless Steel Tank – $$ – Skip to section [Top Recommendation – Incredibly Efficient]
  • Westinghouse 115 Gal. 10 Year 16,500-Watt Electric Water Heater with Durable 316 l Stainless Steel Tank – $$$$ – Skip to section
  • Rheem Ruud 120 gal. Commercial Electric Water Heater, 27000W – $$$$$ – Skip to section

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Westinghouse 100 Gal. 10 Year 16,500-Watt Electric Water Heater with Durable 316 l Stainless Steel Tank – $$$

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Technical Specs

  • UEF (Energy Efficiency): 0.98 EF
  • FHR (First Hour Rating): 68GPH
  • Recovery Rate: 25GPH

General Specs

  • Price: $$$
  • Dimensions: 69H x 27W x 27D inches
  • Weight: 151 lbs
  • Warranty: 10-year Limited Warranty on tank, 1-year on parts

Features

The Westinghouse 100 Gal tank electric water heater is the only 100-gal electric water heater that we’ve featured within the article.

It’s powered through 16,500 watts and is extremely efficient when it comes to energy efficiency, reaching approximately 98%.

The inlet and outlet have built-in heat traps, keeping the heat in the take for greater efficiency.

It comes with a 10-year take warranty (on tank), which shows how confident the company are of the high-grade stainless steel incoloy elements, and the coated tank.

According to Westinghouse, their stainless steel tank design is superior to competitor glass-lined tanks, in both protection, preventing scale built-up and being lightweight.

There are no anode rods, as they are not needed.

Westinghouse WEC115C3W165 Advantages

It includes 3 elements for quicker recovery between hot water draws.

Subsequently, it has an FHR of 68GPH and a recovery rate of 25GPH, which is a substantial amount.

Pros
  • Reputable Brand
  • Required Gallon Capacity
  • Energy Efficient
  • High FHR & RR
  • 10-year limited warranty
Cons
  • Slightly (by a margin) lower energy efficiency

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Westinghouse 115 Gal. 10 Year 13,500-Watt Electric Water Heater with Durable 316 l Stainless Steel Tank – $$$

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Technical Specs

  • UEF (Energy Efficiency): 0.98 EF
  • FHR (First Hour Rating): 48GPH
  • Recovery Rate: 20GPH

General Specs

  • Price: $$$
  • Dimensions: 69H x 24W x 24D inches
  • Weight: 224Β lbs
  • Warranty: 10-year Limited Warranty on tank, 1-year on parts

Features

The Westinghouse 115 Gal tank electric water heater is powered through 13,500 watts and is extremely efficient when it comes to energy efficiency, reaching approximately 98%.

The inlet and outlet have built-in heat traps, keeping the heat in the take for greater efficiency.

This model also comes with a 10-year take warranty (on tank), which shows how confident the company are of the high-grade stainless steel incoloy elements, and the coated tank.

According to Westinghouse, their stainless steel tank design is superior to competitor glass-lined tanks, in both protection, preventing scale built-up and being lightweight.

There are no anode rods, as they are not needed.

Westinghouse WEC115C3W165 Advantages

It includes 3 elements for quicker recovery between hot water draws.

Subsequently, it has an FHR of 48GPH and a recovery rate of 20GPH, which is smaller than the 100-gallon version.

Pros
  • Reputable Brand
  • Required Gallon Capacity
  • Energy Efficient
  • 10-year limited warranty
Cons
  • Slightly lower HFR and RR than 100-gallon version

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Westinghouse 115 Gal. Lifetime 5500-Watt Electric Water Heater with Durable 316 l Stainless Steel Tank – $$

Top Recommendation – Incredibly Efficient

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Technical Specs

  • UEF (Energy Efficiency): 0.98 EF
  • FHR (First Hour Rating): 110GPH
  • Recovery Rate: 25GPH

General Specs

  • Price: $$
  • Dimensions: 70.5H x 27W x 27D inches
  • Weight: 224Β lbs
  • Warranty: Lifetime Limited Warranty on tank, 6-year on parts

Features

The Westinghouse 115 Gallon tank electric hot water heater is powered through 5,500 watts, meaning it requires the lowest wattage of any unit we’ve included.

Taking into account the power requirement, and it’s UEF (Energy Efficiency) rating of 98%, it’s an incredibly efficient system.

This unit is designed for both commercial and residential usage, and boasts a lifetime warranty on the tank, and a 6-year warranty on parts.

It has Stainless steel incoloy elements with low watt density, to help reduce the chances of element burn out, which in turn provides longer service life versus conventional elements.

According to Westinghouse, their stainless steel tank design is superior to competitor glass-lined tanks, in both protection, preventing scale built-up and being lightweight.

There are no anode rods, as they are not needed.

Westinghouse WEC115C3W165 Advantages

It includes 3 elements for quicker recovery between hot water draws.

This unit clearly provides the best value for money in our opinion, when taking into account its cost vs features and technical capabilities.

Pros
  • Reputable Brand
  • Enormous FHR
  • Low wattage usage
  • Energy Efficient
  • Lifetime Warranty on Tank, 6-Year on Parts
Cons
  • None

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Westinghouse 115 Gal. 10 Year 16,500-Watt Electric Water Heater with Durable 316 l Stainless Steel Tank – $$$$

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Technical Specs

  • UEF (Energy Efficiency): 0.98 EF
  • FHR (First Hour Rating): 84GPH
  • Recovery Rate: 19GPH

General Specs

  • Price: $$$$
  • Dimensions: 70.5H x 27W x 27D inches
  • Weight: 224Β lbs
  • Warranty: 10-year Warranty on tank, 1-year on parts

Features

This 3 Element Commercial Stainless Steel Electric Water Heater by Westinghouse is a 16,500 watt unit, suitable for multiple wiring configurations.

The 3 elements provide quicker recovery between domestic hot water draws. With a single or 3 phase option, installation can be flexible.

It has a slightly lower FHR and RR than the previous unit that we talked about, but is still an efficient model.

This unit is designed for both commercial and residential usage, and boasts a 10-year tank warranty and 1-year parts warranty.

It has Stainless steel incoloy elements with low watt density, to help reduce the chances of element burn out, which in turn provides longer service life versus conventional elements.

According to Westinghouse, their stainless steel tank design is superior to competitor glass-lined tanks, in both protection, preventing scale built-up and being lightweight.

There are no anode rods, as they are not needed.

Westinghouse WEC115C3W165 Advantages

It includes 3 elements for quicker recovery between hot water draws.

Pros
  • Reputable Brand
  • Energy Efficient
  • 10-Year Warranty on Tank, 1-Year on Parts
Cons
  • Premium-price

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Rheem-Ruud 120 gal. Commercial Electric Water Heater, 27000W – $$$$$

Technical Specs

  • UEF (Energy Efficiency): 0.98 EF
  • FHR (First Hour Rating): N/A
  • Recovery Rate: 99GPH

General Specs

  • Price: $$$$$
  • Dimensions: 67H x 36W x 36D inches
  • Weight: 414Β lbs
  • Warranty: 3-year Warranty on tank, 1-year on parts

Features

Rheem Commercial Heavy-Duty Electric Water Heaters are suitable for general commercial hot water applications and are also ideal for point-of-use installations.

The tank has a proprietary steel formulation with high-temperature porcelain enamel to maximize corrosion resistance, resulting in superior tank design, with long-lasting capability.

It has screw-in Lifeguardβ„’ stainless-steel elements that resist burn out and corrosion, in addition to thick foam insulation to prevent heat loss.

Not to mention, it has 2 anode rods installed to ensure long life and corrosion resistance, and the full port, full flow brass drain valve reduces time to drain and service tank.

It also has sentinel diagnostics, which helps to identify a non-operating element.

This is a very expensive unit, and will most definitely be ideal for large-scale commercial usage who require a unit which can provide a high turnover of hot water.

Pros
  • Reputable Brand
  • Ideal for Large Commerical Operation
  • 3-Year Warranty on Tank, 1-Year on Parts
Cons
  • Large Price

Conclusion

It’s important to highlight that we realize everyone has different needs and requirements for a 100-gallon electric hot water heater, alongside an entirely different budget. Therefore we try not to make solid recommendations, as we don’t know your unique requirements.

However, based on features, reviews, and price, we personally like the Westinghouse 115 Gal. Lifetime 5500-Watt Electric Water Heater with Durable 316 l Stainless Steel Tank. It comes with a lifetime tank warranty, 6-year parts warranty which is unparalleled when compared with other units. Additionally, it offers superior UEF & FHR to other similarly priced models… Overall, a fantastic product for those who are looking for an (approximate) 100-gallon capacity electric water heater.

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FAQ

🚰Is a 100-gallon capacity electric water heater enough?

The β€œdraw efficiency” of both gas or electric water heaters is generally calculated at approximately 70% of the overall tank storage size.

This is because as a tank is being emptied of hot water, it is also being filled with cold water, so approximately 70% of it is usable hot water.

This means that a 100-gallon unit has a draw efficiency of around 70 gallons.

This is enough to simultaneously maintain six baths running or four baths with two automatic clothes washers running.

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πŸ’§How long does it take a 100-gallon electric water heater to heat up?

There are a few different factors that come into play when talking about this, including the type of heating element inside the tank and the temperature of the water that is entering the unit.

However, hot water heaters will have two ratings that will help you determine the answer to this question, and these are:

First Hour Rating: The total amount of water in gallons that the heater can supply per hour, starting with a full tank of hot water.

Recovery Rate: The total amount of water in gallons that the heater can supply per hour, starting with an empty tank.

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🚰100-gallon electric water heater cost

These units vary in price, ranging from around $1,500 to $10,000.

As we mentioned at the beginning of the article, we have listed the water heaters in order of cost, from the lowest price at the top ($) to the largest price ($$$$$) at the bottom.

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Summary
Review Date
Reviewed Item
100-Gallon Electric Water Heaters
Author Rating
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Product Name
100-Gallon Electric Water Heaters

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