Best 100 Gallon Water Heaters (April 2024) - Rated by CherryPicks' Experts

At a Glance: Our Top Picks

Top 1

Rheem G100-200 Natural Gas Universal Commercial Water Heater, 100 Gallon

9.8
CPR Score
Top 2

American Standard D-100-199-AS Natural Gas Heavy Duty Commercial Water Heater...

9.7
CPR Score
Top 3

Rheem RTGH-95DVLP-2 Tankless Water Heater, Grey, Grey

9.7
CPR Score
Tips


Based on our evaluations of 101 100 Gallon Water Heaters and the analysis of over 20,281 consumer satisfaction reviews, We have rank top 28 Best 100 Gallon Water Heaters reviews of different brands, such asGeneric, EcoSmart, RecPro, AIRTHEREAL, American Standard, Bosch Thermotechnology, Rheem, Stiebel Eltron, Rinnai, thermomate, FOGATTI, American Water Heater, American Standard Water Heaters And Rheem / Ruud.

* Cherrypicksreviews.com is reader-supported, Our editor review, and recommend the best products based on extensive data analysis, if you click on the product links, we may earn a commission through qualifying products purchased.

The Best 100 Gallon Water Heaters Rated by CherryPicks

Market Overview
100 Gallon Water Heaters Reviewed
  • Reviews Analyzed: 20,281 Items
  • CPR Avg. Rating: 8.6 / 10
28 Products Evaluated
  • Highest Price: $19,074.98
  • Lowest Price: $180.82
  • Avg. Price: $2,380.67
Price Disclaimer

Top 28 100 Gallon Water Heaters on Amazon (Verified You can Buy)

Rheem G100-200 Natural Gas Universal Commercial Water Heater, 100 Gallon

Rheem
G100-200
30.25 x 30.25 x 66.12 Inches
780.0 Pounds

Ratings for Rheem (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
ePlumbing Products -
SURPLUS SUPPLY -

Features

199,900 BTU
Universal tank design
Show More
Top 2

American Standard D-100-199-AS Natural Gas Heavy Duty Commercial Water Heater, 100 Gallon (Not CA Compliant)

American Standard
D-100-199-AS
500.0 Pounds

Ratings for American Standard (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
SURPLUS SUPPLY -

Features

80% thermal efficiency
194 GPH at 100 degree rise
Show More

Rheem RTGH-95DVLP-2 Tankless Water Heater, Grey, Grey

Rheem
RTGH-95DVLP-2
27.5 x 9.75 x 28.5 Inches
77.0 Pounds

Ratings for Rheem (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
Best of Home -

Features

Exclusive Water Savings technology conserving up to 1, 100 gallons per year
199, 900 BTU (gas consumed per hour)
Show More
Top 4

Rheem-Ruud Commercial Gas Water Heater, 100 gal. Tank Capacity, Natural Gas, 80,000 BtuH - G100-80

Rheem / Ruud
25.81 Pounds

Ratings for Rheem / Ruud (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
DataAlchemy -
Data Alchemy -

Features

Item:-Commercial Gas Water Heater
Tank Capacity:-100 gal.
Show More
Top 5

AO Smith 100 Gallon - 250,000 BTU Master-Fit Ultra-Low NOx Commercial Gas Water Heater

Generic

Ratings for Generic (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Franko Trade -

Features

Application: Plumbing
Fuel Type: Natural Gas
Show More
Top 6

Rheem G100-200LP, 100 Gallon, OTHER

Rheem
G100-200LP
30.25 x 30.25 x 66.12 Inches
780.0 Pounds

Ratings for Rheem (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
SURPLUS SUPPLY -

Features

199,900 BTU
Universal tank design
Show More
Top 7

American Standard D-100-270-AS 100 gallon 270,000 BTU Heavy Duty Commercial Natural Gas Water Heater

American Standard Water Heaters
D-100-270-AS
30.25 x 30.25 x 73.625 Inches
799.38 Pounds

Ratings for American Standard Water Heaters (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
SURPLUS SUPPLY -

Features

Inner Dura glas lined tank fired at 1,600°f for optimum protection from the effects of corrosion
Non cfc foam insulation - maximized heat retention to save energy and reduce fuel costs
Show More

Rheem Mid-Efficiency 8.4GPM Outdoor Natural Gas Tankless Water Heater

Rheem
RTG-84XLN-1
8.88 x 13.88 x 23.63 Inches
57.0 Pounds

Ratings for Rheem (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Exclusive Water Savings technology conserving up to 1, 100 gallons per year
157, 000 BTU (gas consumed per hour)
Show More

Rheem Prestige High Efficiency 9.5GPM Indoor Natural Gas Tankless Water Heater

Rheem
RTGH-95DVLN-2
27.5 x 9.75 x 28.5 Inches
77.0 Pounds

Ratings for Rheem (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Hot water without the wait - or the waste
Low operating cost - High energy efficiency and water savings setting
Show More

Rheem Professional Classic Series 50 Gallon Capacity 4.5 kW Tall Electric Water Heater PROE50 T2 RH95

Generic
PROE50 T2 RH95
20.25 x 20.25 x 61.63 Inches
121.0 Pounds

Ratings for Generic (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
MRO Next Day -

Features

0.93 Uniform Energy Factor (UEF)
21 GPH Recovery at 90°F Rise
Show More

Stiebel Eltron 239223 Tankless Water Heater – Tempra 29 Plus – Electric, On Demand Hot Water, Eco, White, 23

Stiebel Eltron
239223
4.63 x 16.63 x 14.5 Inches
1.0 Pounds

Ratings for Stiebel Eltron (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
FruityFlix LLC -

Features

On demand a continuous and unlimited supply of hot water
Sleek design saves space and no venting required, It also features two different temperature memory presets, making it easy to adjust for personalized needs.
Show More

Rinnai RU199iN Condensing Tankless Hot Water Heater, 11 GPM, Natural Gas, Indoor Installation

Rinnai
RU199iN
22.05 x 14.76 x 33.86 Inches
74.1 Pounds

Ratings for Rinnai (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
Big Frog Supply 5,482
Plumbing & HVAC Wholesale -
The Luxury Coffee Shop -
RobinM4554 -

Features

Endless Hot Water: Enjoy unlimited hot water flow throughout the house; compact, durable, and easy to install; professional installation recommended
Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary
Show More

Rheem Prestige Condensing Tankless Outdoor Natural Gas Water Heater 9.5 GPM - RTGH-95XLN-2

Rheem
RTGH-95XLN-2
27.5 x 9.75 x 28.5 Inches
77.0 Pounds

Ratings for Rheem (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
Southern Connect -

Features

Hot water without the wait - or the waste
Low operating cost - High energy efficiency and water savings setting
Show More

Rheem Prestige Condensing Tankless Gas Indoor Natural Gas Water Heater With Built-in Recirculation 11.0 GPM - RTGH-RH11DVLN

Rheem
RTGH-RH11DVLN
14.8 x 17.3 x 28.7 Inches

Ratings for Rheem (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Hot water without the wait - or the waste
Low operating cost - High energy efficiency and water savings setting
Show More

Rheem RTG-70XLP-1 Tankless Water Heater, Grey, Grey

Rheem
RTG-70XLP-1
9.88 x 13.88 x 25.63 Inches
54.0 Pounds

Ratings for Rheem (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
Amazon Warehouse 1

Features

Continuous Hot Water – never run out of hot water, even with back-to-back showers
Tankless Gas Water Heaters are cost saving and energy efficient
Show More

Rheem Mid-Efficiency 8.4 GPM Outdoor Liquid Propane Tankless Water Heater

Rheem
RTG-84XLP-1
8.88 x 13.88 x 23.63 Inches
54.0 Pounds

Ratings for Rheem (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Exclusive Water Savings technology conserving up to 1, 100 gallons per year
157, 000 BTU (gas consumed per hour)
Show More

Rinnai RL75IN Tankless Hot Water Heater, 7.5 GPM, Natural Gas, Indoor Installation

Rinnai
RL75iN
17.5 x 13.0 x 31.0 Inches
54.0 Pounds

Ratings for Rinnai (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
eFaucets 9,655

Features

Original Design: Tankless hot water heater's Circ-Logic technology offers recirculation patterns that match your habits; For the latest in non-condensing technology that speeds up service and installation, check out our new RE160iN model
Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: Non-condensing tankless hot water heater from Rinnai is only the size of a small suitcase and fits in a wide variety of spaces, but provides up to 7.5 GPM (5 fixtures at once)
Show More

EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology

EcoSmart
ECO 11
3.75 x 8.0 x 11.5 Inches
6.5 Pounds

Ratings for EcoSmart (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
718 Sold It 4,922

Features

Endless On-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature.Amperage Draw : 54 A
Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 11.5 x 8 x 3.75 inches
Show More

Bosch Thermotechnology 40-Gallon Tall Electric Storage Water Heater, Gray

Bosch Thermotechnology
7738007321
18.25 x 18.25 x 61.6 Inches
103.7 Pounds

Ratings for Bosch Thermotechnology (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

APPLICATION: Dimensions : 18.25" W x 61.60" H x 18.25" L. Perfect size for a maintenance closet, access closet under the stairs, crawl space. Ideal for replacement projects.
DURABILITY: Two magnesium anode rods for extra tank protection. Dielectric heat trap. Heavy gauges steel tank for extra years of trouble-free service. Glass-lined steel tank to help prevent corrosion.
Show More

RecPro RV Tankless Water Heater | On Demand Hot Water Heater | Gas Water Heater | Remote Control (White)

RecPro

Ratings for RecPro (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
RecPro® 1,196

Features

No more waiting for the water tank to warm up or running out of warm water halfway through your shower. With this amazing machine, you can have a steady stream of hot water flowing to your faucets or shower without waiting for the tank to warm up.
There is a forced exhaust structure that keeps the air safe and clean while and after entering the combustion chamber. There is also a dust net to make sure no dirt gets into the tankless water heater.
Show More
Top 21

AO Smith 80 Gallon - 4,500 Watt ProMax Residential Electric Direct Solar Booster Water Heater

Generic

Ratings for Generic (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Franko Trade -

Rinnai RSC199iP Smart-Circ Condensing Gas Tankless Water Heater, Super High Efficiency Plus Propane Heater, Up to 11 GPM, Indoor Installation, 199,000 BTU

Rinnai
RSC199iP
33.86 x 21.26 x 14.37 Inches

Ratings for Rinnai (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
Buildcom 1,641
Plumbing & HVAC Wholesale -

Features

Smart-Circ Intelligent Recirculation: This tankless hot water heater features Smart-Circ technology that learns your water usage patterns, then schedules pump and recirucation accordinlgy for superior energy efficiency and convenience
Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: This indoor condensing tankless hot water heater from Rinnai is only the size of a small suitcase, but provides up to 11 GPM (7 fixtures at once)
Show More

Rheem Mid-Efficiency 7.0GPM Indoor Liquid Propane Tankless Water Heater

Rheem
RTG-70DVLP-1
9.88 x 13.88 x 25.63 Inches
62.0 Pounds

Ratings for Rheem (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Continuous Hot Water – never run out of hot water, even with back-to-back showers
Tankless Gas Water Heaters are cost saving and energy efficient
Show More

FOGATTI Natural Gas Tankless Water Heater, Indoor 7.5 GPM, 170,000 BTU White Instant Hot Water Heater, InstaGas Comfort 170 Series

FOGATTI
FGD24IN
26.2 x 17.1 x 7.3 Inches
40.0 Pounds

Ratings for FOGATTI (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
HaiNaDS -

Features

We recommend that all installations of units must be done by the local building and plumbing codes of the installation location and installation be done by a licensed professional.
The tankless design means you don't have to wait 30 minutes for preheating and unlimited use of hot water.
Show More

EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1, 17 x 17 x 3.5

EcoSmart
ECO 27
3.625 x 17.0 x 17.0 Inches
16.8 Pounds

Ratings for EcoSmart (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Endless on-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature
Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 17 x 17 x 3.75 inches 
Show More

Airthereal Electric Tankless Water Heater 18kW, 240Volts - Endless On-Demand Hot Water - Self Modulates to Save Energy Use - Small Enough to Install Anywhere - for 2 Showers, Evening Tide series

AIRTHEREAL
18kW
17.25 x 12.22 x 3.43 Inches

Ratings for AIRTHEREAL (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Sain Store -

Features

☼ Endless Hot Water: Imagine you are the last one in your family to take a shower before heading out for the day. You turn on the faucet and the water is freezing cold. Too bad you don’t have an Airthereal Electric Tankless Water to provide endless hot water on demand with no preheating, temperature fluctuations, or running out of hot water in the tank.
☼ Save Space: That water heater in the basement or utility closet takes up a ton of space. This wall-mounted water heater uses 90% less space than a traditional hot water heater with a tank.
Show More

Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted

Bosch Thermotechnology
7738004996
13.75 x 10.75 x 13.75 Inches
15.5 Pounds

Ratings for Bosch Thermotechnology (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

CONVENIENT HOT WATER HEATER: 2.5 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%. Dimensions : 13.75 W x 13.75 H x 10.75 D Inches
LONG LASTING QUALITY: This electric water heater is easy to maintain and has premium glass-lined material for a long service life. (Amps 12A, Volts (VAC) 120)
Show More

Tankless Water Heater Electric 27kW 240 Volt, thermomate On Demand Instant Endless Hot Water Heater, Digital Temperature Display for Residential Whole House Shower, 114A GRAY

thermomate
ET270
17.12 x 13.12 x 3.12 Inches

Ratings for thermomate (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
THMOS -
thermoflow -

Features

[Instant Unlimited Hot Water] - REQUIRE 3 SET x Double-pole 40AMP Breakers to Achieve 240V for this On demand tankless electric water heater, providing hot water in 3 seconds when you need it and as long as you need, eliminating wait time, never run out of hot water again and No More cold shower. Flow Rate 5.27GPM @35°F Rise
[Self-modulating Power] - Self-modulating technology regulating the amount of energy required to heat water only when you need it with 99.8% efficient, saving up to 60% on water heating cost comparing to traditional tank water heater. Wall mounted compact size with no water tank, convenient for any spaces, saving floor space and fitting into tight spaces.
Show More

Top 10 100 Gallon Water Heaters - Verified to Buy (Apr. 2024)

Top 10 100 Gallon Water Heaters Brands on Amazon

Here is the list of top-rated brands that were evaluated by CherryPicks.

  • Rheem
  • American Standard
  • Rheem / Ruud
  • Generic
  • American Standard Water Heaters
  • Stiebel Eltron
  • Rinnai
  • EcoSmart
  • Bosch Thermotechnology
  • RecPro

Related 100 Gallon Water Heaters Guides

For more personalized 100 Gallon Water Heaters guides, Check those pages,


Top 10 100 Gallon Water Heaters Sellers: CPR Seller Rank List

CPR sellers rank is based on CherryPicks-AI bestselling ranking system that helps us analyze each seller's sales trends. The List of top seller ranks is our in-house data, essential for our product ranking to help you make the right shopping choice.

Rank Name Yearly Feedbacks Avg. Ratings
🥇 Amazon Warehouse 4,312,804 4.5
🥈 RecPro® 2,842 4.7
🥉 Buildcom 2,327 4.6
4 718 Sold It 1,051 4.7
5 Big Frog Supply 967 4.6
6 eFaucets 607 4.5
7 DataAlchemy 570 4.4
8 Sain Store 498 4.8
9 Data Alchemy 454 3.6
10 Amazon.com 385 4.7
View or download top 100 Gallon Water Heaters seller & rating report
Amazon Warehouse [4312804] RecPro® [2842] Buildcom [2327] 718 Sold It [1051] Big Frog Supply [967] eFaucets [607] DataAlchemy [570] Sain Store [498] Data Alchemy [454] Amazon.com [385] Amazon Warehouse 100% RecPro® 0% Buildcom 0% 718 Sold It 0% Big Frog Supply 0% eFaucets 0% DataAlchemy 0% Sain Store 0% Data Alchemy 0% Amazon.com 0%

[Get] 100 Gallon Water Heaters Deals (✅Exclusively for Prime)

What does "Amazon Fulfilled" Mean?

Amazon Fulfilled refers to products handled by Amazon's logistics, which indicates that the product is stored, packed, and shipped by Amazon from one of its fulfillment centers.

When you order a product that is "Amazon Fulfilled," Amazon takes care of the storage, packing, shipping, and customer service for that product. This often ensures quicker delivery and better customer service compared to products that are not fulfilled by Amazon. It also means that the product is eligible for Amazon's return policy.

What does "Prime" Mean?

"Prime" refers to Amazon Prime Member (Join Amazon Prime Now), which indicates eligibility for Prime benefits. When you see "Prime" next to a product on Amazon, This generally means that if you are  an Amazon Prime member, you can get free two-day shipping on that product, and sometimes even same-day or one-day shipping depending on your location.

Prime members also have access to other benefits, including 2-Day ShippingExclusive Member DealsPrime VideoBuy With PrimeAmazon MusicPrime Gaming, and more.

Shop Prime 100 Gallon Water Heaters Deals

What does "Free Shipping" Mean?

"Free Shipping" means that you will not be charged additional fees for the shipping of that product. However, unlike "Prime," which usually guarantees fast two-day shipping, "Free Shipping" doesn't necessarily mean fast shipping.

Sometimes there might be a minimum purchase requirement to qualify for free shipping if you are not a Prime member. For Prime members, the "Free Shipping" usually refers to the free two-day shipping that is one of the benefits of the Prime membership.


Why Should You Trust Us?

Now hundreds and thousands of Rough Plumbing supplies are available on Amazon, Picking the right one is not easy, and that may take a lot of your time, Right? and What is the best 100 Gallon Water Heaters to buy for new April 2024?

CherryPicks’s Methodology for Evaluating 100 Gallon Water Heaters

We developed the CherryRatings-AI system to identify and score reviews and the CherryPicks-AI ranking system that uses TensorFlow framework to generate the best list, It will help us evaluate Rough Plumbing items that sell on Amazon. The score of items is based on over ten parameters such as analyzing customer review content, product reviewing rating statistics, brand reputation evaluation, comparing product price with features, etc, You can visit How We Rank to learn more in detail.

We collected and analyzed 101 of 100 Gallon Water Heaters reviews based on our selection criteria. It helped us shortlist the top qualified and rated 100 Gallon Water Heaters for Rough Plumbing, We found that most customers choose 100 Gallon Water Heaters with an average price of $2,380.67, and the top brands are Generic, EcoSmart, RecPro, AIRTHEREAL, American Standard, Bosch Thermotechnology, Rheem, Stiebel Eltron, Rinnai, thermomate, FOGATTI, American Water Heater, American Standard Water Heaters And Rheem / Ruud. 

Then our expert-level editors reviewed all those quality items and selected the top 28 100 Gallon Water Heaters for you, We have researched hundreds of sellers and picked the top sellers for Rough Plumbing, including Amazon Warehouse, RecPro®, Buildcom, 718 Sold It, Big Frog Supply, eFaucets, DataAlchemy, Sain Store, Data Alchemy, Amazon.com, ePlumbing Products And MRO Next Day. The Rheem G100-200 Natural Gas Universal Commercial... are available for purchase right now, and The seller of #1 rank product has received honest feedback from 13 consumers with an average rating of 3.6.

We've helped a lot of satisfied users get the right Tools & Home Improvement product based on their needs, and save lots of time for them to pick 100 Gallon Water Heaters to buy.


Written By Hunter Lambrick

Hunter Lambrick is a contributing writer on the Cherrypicksreview platform who specializes in writing articles on outdoor events and home tool products. He has been doing this for a while now and has developed a wealth of experience in it.