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10 Best 75 Gallon Water Heaters & Their Reviews For 2022

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Tim Rhodes

If you’re looking for the best 75 gallon water heaters, we’ve listed the top 10 in this article.

Most products come with a thermostat that makes it easy to measure the amount of hot water you want along with the temperature you want it at.

Keep in mind that gas hot water heaters are better than electric heaters due to their quick recovery processes.

They’re designed in a way that heats the water quickly and fills up the used hot water.

Furthermore, they also come at a lower price and are easy to install.



Last update on 2023-12-16 / Affiliate links / Images from Amazon Product Advertising API

10 Best 75 Gallon Water Heaters Reviewed

Below you’ll find a list of the top 10 best 75 gallon water heaters along with a review, product details and product image for each one.

1. Rinnai RUC98iN 75 Gal Ultra Series Natural Gas Water Heater (Tankless)

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

First on our list is this high-efficiency, natural gas water heater that’s great for those looking to save space.

It runs at 450 gallons per hour (GPH) and supplies an endless amount of hot water.

It can fit anywhere due to its space-saving design and has 95% thermal efficient natural gas and or a propane indoor installation.

This system is packed with a five-year tank warranty on the heat exchanger for peace of mind.

It is also the only company that will give you both concentric and twin-pipe PVC venting.

Like most heaters on this list, it comes with a pressure relief valve and stores nicely since it’s only 23 inches tall without the need of a pilot light.

Furthermore, the customer reviews show that you won’t be disappointed with this product purchase.

One complaint, however, is that some customers aren’t too fond of the power vent type of this natural gas water heater.

This is found in almost every review.

Despite this, we give it 5 stars.


  • Holds up to many gallons
  • Tank and parts warranty
  • Labor warranty
  • Easy storage
  • Uniform energy factor: 0.81

Check Price and Reviews on Amazon

2. Rinnai RL94iP Propane Tankless Water Heater (75 Gal)

Rinnai RL94iP Tankless Hot Water Heater, 9.8 GPM, Propane, Indoor Installation

This water heater is great for those looking to settle either for a short period of time or permanently where it will be placed.

It offers a nonstop supply of hot water with its tankless water heater.

The rate of flow is 9.4 gallons per minute and can offer 199,000 BTU with a thermal efficiency of 83%.

Its improved scale detection and its temperature lock function help severe damage to the water heater.

Furthermore, this water heater is Energy Star certified with a twelve-year warranty on the heat exchanger for extra peace of mind.

Great product for the amount of performance it puts out without the need for a pilot light.

The power source for this system vents directly to the outside, making it an ideal power vent type for most customers.

We definitely give this water heater a high review with 5 stars.


  • Non-stop supply of hot water
  • Temperature lock
  • Top-notch performance
  • Warranty on both tank and parts
  • Top-rated storage
  • Power source directly to the outside

Check Price and Reviews on Amazon

3. Rheem G75-75n Low NOx 75,000 BTU Natural Gas Water Heater

Rheem - G75-75N-2 - Commercial Gas Water Heater, 75 gal. Tank Capacity, Natural Gas, 75, 100 BtuH

This high-efficiency water heater by Rheem is great for those looking to save space in their rooms or even relocate.

The tank weighs 480 pounds, contains 75 gallons and comes in at 65.3 inches tall with 75,000 BTU.

This natural gas water heater can fit in any location because of its small jacket diameters and its height.

It has a low profile automatic flue damper and a spark-to-pilot light ignition-type system.

Furthermore, it comes with an installed AGA/ASME rated temperature and pressure relief valve.

It comes with a three-year tank warranty, one-year parts warranty, and a stainless steel burner for peace of mind.

You can’t go wrong with this 75,000 BTU Low NOx natural gas water heater.


  • Great tank for saving space
  • Energy efficient
  • Warranty on both tank and parts
  • Great performance
  • Comes with a temperature and pressure relief valve
  • 75,000 BTU Low NOx

Check Price and Reviews on Amazon

4. Rheem RTEX-27 240V 3 Heating Chambers Residential Tankless Water Heater

Rheem RTEX-27 240V 3 Heating Chambers Residential Tankless Water Heater

You won’t be disappointed with the Rheem Performance maintenance-free and natural gas water heater.

Often a popular choice for those looking for hot water heaters, this water heater provides a great deal of hot water for households of 5 or more people.

One of the best parts about this water heater is that it comes with helpful instructions for easy at-home setup.

Some available benefits of this Rheem product include self-cleaning, works with Nest, WiFi compatible and even has EcoNet enabled.

It comes with continuous hot water so you’ll never have to worry whether your house has enough hot water or not.

You can expect up to 100 gallons of hot water in the first hour.

Furthermore, it also comes with automatic leak detection and vacation mode.

This water heater is rated for installations of up to 8,500 square feet and comes with a pilot light window.

Many resellers review this hot water heater with 5 stars and come with a 6-year limited warranty.

Also comes with an anode rod.


  • 6-year limited warranty on tank parts
  • 1-year in-home labor warranty
  • Piezo ignition system
  • This natural gas water heater is more economical than other electric models
  • Easy to replace compared to other units
  • Pilot reset button
  • Easy installation
  • Recovery Rate for 90F rise: 72.8
  • Fuel type: gas
  • Pilot light window
  • Anode rod

Check Price and Reviews on Amazon

5. Rheem 75 Gal Natural Gas Water Heater 100 BtuH - low NOx

Reliance 6 75 XRRS 75 Gallon Gas Water Heater

This heavy-duty product is great for those looking to use a lot of hot water in a day with 100 Brith Thermal Units per hour.

It comes with a capacity of 75 gal of water storage for the tank, and it also utilizes natural gas hence it’s a better option for a gas water heater.

This gas water heater is very efficient and comes with a low Nox burner, which means that it is environmentally friendly.

If you use a lot of water in a day, it comes at 90% recovery.

This water heater is also designed with a standard direct vent type connection system and a pressure relief valve.

These are some of the reasons why you should get this gas water heater.

This tank makes the pilot light easy with its ignition resistant design and is plenty for households with 5 people or more with excellent performance.


  • Environmentally friendly
  • Standard vent connection system
  • Low NOx burner
  • Excellent performance
  • Ignition resistant design
  • Pilot light window

Check Price and Reviews on Amazon

6. Bradford-White TTW Hot Water Heater - 75 Gal

Bradford White 415-52907-01

This tank is great for those looking to conserve energy consumption.

It’s a power vent gas heater that ranges in tank capacity from 40 to 75 gallons and an energy factor of up to .70.

Some of its models are energy star classified and it also features corrosion resistant Vitro glass lining, an advanced temperature control system, a layer of non-CFC foam insulation, and a LED diagnostic screen.

It has units that house a vapor sensor that shuts down the burner if the flammable vapor is detected.

In short, this system reduces accidental ignitions.

Units are also configured for horizontal and vertical venting to adapt to any sized surrounding, over and above the rust and corrosion resistance.

The overall review for this system is quite high.


  • Corrosion resistance
  • Advanced temperature control system
  • Energy star classified
  • Large amount of gallons in the first hour
  • System reduces accidental ignitions

Check Price and Reviews on Amazon

7. Aquarium Water Heater 50W/100W/200W/300W Fish Tank 75 Gal Heater

Aquarium Heater Submersible 50W/200W/300W Fish Tank Water Heater Adjustable Temperature Thermostat...

This product is great for those looking to travel out or attend to other duties.

It has an adjustable temperature of 15 – 75 freshwater saltwater.

This means that it can provide hot water for households with 5 people or more.

This working model avoids overheating your fish.

This tank comes with an indicator light to let you know when the water heater is on and the right temperature has been reached.

It will stop work automatically when it reaches the temperature that you set.

The temperature range for this product is between 20 to 34 degrees Centigrade.


  • Light indicator
  • Circulating working mode prevents overheating
  • Adjustable temperature
  • First hour delivers a large capacity

Check Price and Reviews on Amazon

8. 75 Gal SALUTE Aquarium Water Heater Submersible Auto Thermostat WaterHeater

SALUTE Aquarium Heater Submersible Auto Thermostat Heater, (50W/100W/200W/300W) Fish Tank Heater and...

This product is great for those looking to conserve fish.

It has accurate temperature control and the power of 200W is around 30-75 gallons.

It has an adjustable aquarium heater temperature and it’s easy to adjust the temperature that you need from 68°F to 93°F (20°C – 34°C).

A good temperature range for most fishes is 76°F to 80°F (25- 27°C).

It is suitable for fresh or saltwater aquariums.

This makes it very easy to adjust the temperature that you need.

Not only that, but you can also observe the temperature of the fish tank at any time.

Its suction cups can be placed either vertically or horizontally within the aquarium.

Furthermore, also contains an LED indicator light that displays red when actively heating.


  • Suitable for fresh or salty water aquariums
  • Comes with a free diving thermometer
  • Automatic constant temperature function
  • Great performance

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9. Rheem Professional Classic Water Heater - 75 Gal

Rheem G75-125 Natural Gas Universal Commercial Water Heater, 75 Gallon

This product by Rheem is great for those looking to consume a lot of hot water.

It is a classic model that comes in both gas and electric versions and capacities extending from 28- 75 gallons.

This tank has Ultra Low NOx models for factories, industry, and companies.

Furthermore, this tank is particularly maintained since it doesn’t have any filter to clean and replace and it has an exclusive air or fuel shut-off.

Furthermore, it has an installed temperature and pressure relief valve and has a hot water connection to make it easy for installation.

This product to light since it has a Piezo Ignitor so there’s no need for matches.

You won’t be upset with the performance of this product.


  • Gas and electric versions
  • Holds a large amount of hot water
  • Easy to light with Piezo Ignitor
  • Installed temperature and pressure relief valve
  • Low NOx

Check Price and Reviews on Amazon

10. 76,000 BTU Natural Gas Water Heater By A.O. Smith - High Recovery - Low NOx

A.O. Smith Promax High Recovery Fcg-75-Lp 75,100 Btu 74 Gal Residential Lp Gas Water Heater

This hot water heater by A.O.

Smith is great for those looking to have huge families.

It’s designed to provide hot water for households with 5 people or more when sized suitably.

This model has got an environmentally friendly 76,000 BTU Low NOx gas burner making it deliver 129 gallons of hot water in the first hour.

The gas valve also includes an LED status indicator for diagnostics reporting and a push-button ignition to simplify the startup process.

It has a factory-installed temperature and pressure relief valve, and tamper-proof drain valve which ensures safe operation.

It also features a protective anode rod and a ceramic fused tank shield designed to reduce corrosion and provide ultimate tank protection.

The model has a built-in safety system that reduces the risk of accidental flammable vapor ignition hence it is designed with your safety in mind.

It also comes with a 6-year limited warranty and a water connection size of 12”.


  • Ideal hot water delivery for households with more than five people
  • Environmentally friendly – 76,000 BTU low NOx gas burner
  • Delivers 129 gallons of hot water in the first hour
  • Self-cleaning dip tube
  • Protective anode rod
  • Electronic gas valve provides particular temperature control
  • FVIR compliant
  • 6-year limited warranty
  • Gas control with LED status indicator that reports on-system operational status
  • Water connection size of 12”
  • Factory-installed temperature and pressure relief valve
  • Tank protection

Check Price and Reviews on Amazon

11. Rheem 75 Gal Heater NG 125,000 BtuH

RHEEM-RUUD Water Heater,75 gal,125000 BtuH

This product is great for those looking to save energy.

Unlike other big tanks that take up the entire room, this product is designed in such a way that it would not take up much of your space.

It’s designed with energy-saving combustion, as noted in almost every review.

If you plan on buying a gas water heater, this tank will be a superb choice as the burner of this water heater is designed with stainless steel and is easy for maintenance.

For those looking to save some space, this water heater comes in at only 18 inches tall.

It also comes with a secure retrofit application system that you can change quickly and has an 80% build up in thermal effectiveness.

Like most units on this list, it comes with a 6-year limited warranty and a pilot light window.


  • Easy to maintain
  • Extremely energy efficient with low emissions
  • Space-saving at only 18 inches tall
  • Water heater comes with easy installation
  • 6-year limited warranty
  • Installed temperature and pressure relief valve that ensures safe operations
  • Pilot light window
  • Tank protection

Check Price and Reviews on Amazon

Factors To Consider And Frequently Asked Questions

When purchasing a hot water heater, here are some product factors you may want to consider:

  • Uniform energy factor (UEF)/energy efficiency
  • Safety
  • Rust resistance (as long as you take care of it)
  • Tank capacity
  • Peace of mind
  • Size (it might not fit if it’s too tall or wide)
  • Recovery rate
  • BTU low NOx
  • Environmentally friendly

How much does a 75 gallon water heater cost?

75 gal water heaters come at a heavy price and can range anywhere from a couple of hundred dollars to in the thousands.

For a household of 5 or less, you’re looking at a price of anywhere between $200 and $700 dollars.

Commercial use will cost you in the thousands.

What is the best 75 gallon water heater?

The best 75 gal water heater depends entirely on your needs and what you are looking for.

There’s no one size fits all tank, but Rheem is a top-notch brand for almost any type of setting.

How long does a water heater typically last?

With proper maintenance and use, you can expect anywhere from 8 to 12 years.

How Heavy is a water heater that’s 75 gallons?

The weight of a water heater depends largely on the size, with some tanks weighing up to 500 pounds or more.

Do I Need a 75 Gallon Water Heater?

You need a water heater with at least 75 gallons if you have a household of 5 people or more, but this may vary depending on the amount of hot water you use.

The general rule is that you need about 40 gallons for every 4 people in your home.

For hot water for households of less than 5, a 75 gallon tank is more than enough.


Ensure the water heater comes built with safety measures such as a pilot thermal cut-off device that cuts off the current when it is heated to a specific temperature.

Consider choosing a more broad water storage tank capacity unless you barely use hot water.

In that case, you can go for a smaller quantity of water heater.

But it will be a better option to get a bigger tank capacity of the water heater as you won’t worry about running out of water.

It’s important to also take care of your water heater so that it lasts longer.

Size and design

It’s also critical to consider the size of the water heater as some water heaters take up so much space.

Fortunately, now almost any gas water heater will be built more efficiently to take up less space.

The size may vary depending on your needs.

Power Consumption

Ensure you look for a water heater that offers less energy consumption.

If you live in a cold region and you use hot water on a daily basis you don’t want to add up to your electricity bill.

So it is highly advisable to buy a water heater that consumes less energy.

Also, be sure to think about the power source before you make your purchase.

Final Thoughts

Gas water heaters are very convenient and easy to use.

Today people are starting to replace the old electric water heaters with a gas water heater since gas water heaters are more efficient and easy to install.

If you don’t need a high-capacity water heater, downsize to a 65 gallon model to save on space and money.

BTU rating is starting to become an important factor when deciding which one to get.

With technological advancement, this type of gas water heater now comes with a low NOx feature which is environmentally friendly.

Gas water heaters are more reliable as they have a recovery system that allows filling up the water loss and heating it quickly.

Be sure to take care of your water heater so that you won’t have to replace it any time soon.

We hope this review article can help you find the best water heater for your needs.

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