75 gallon water heater

Best 75 Gallon Water Heater: Live Safe and Healthy

Cold winter days can be almost impossible to survive without warm water. Thanks to advanced technologies, you can warm up water at home using water heaters. 

Depending on the brand and type, water heaters are environment-friendly and consume less energy – making them efficient appliances. For homes that use around 86 gallons of hot water daily, tankless water heaters can be 8%–14% more energy efficient than conventional storage tank heaters. 

Be it a tankless or storage tank, the best 75-gallon water heater comes with safety features and a long life span – for your convenience. Let’s look at a few of them.

Types of Water Heaters

Before we move on to the best 75 gallon water heaters, it’s important to know how different types of water heaters stand out from each other. Water heaters can typically be of these kinds –

1. Storage Tank Water Heater

Storage tanks are the most common type of water heaters, with an insulated tank for storing warm water. The tanks hold the warm water and supply it through a pipe when needed.

Usually, natural-gas water heaters use less energy and are more affordable to operate (by around 50%) than electric water heaters. However, gas water heaters may be an expensive investment!

2. Tankless Water Heater

Tankless water heaters use heating coils to heat the water instantly instead of storing it. Depending on intake water temperatures, they can supply a smaller amount of hot water per minute—about 3.5 gallons.

They work best for people who rarely use water for multiple purposes at once, such as running the dishwasher and showering at the same time.

3. Heat Pump Water Heater

These heaters transfer heat from the air to the water to heat it up. In comparison to traditional heaters, they consume around 60% less energy. Although they’re more expensive than electric-only ones, they’re also easier to install and have a quicker payback period.

But these heaters don’t perform their best in extremely cold temperatures, so they need an environment that’s between 40° to 90° F.

4. Solar Water Heater

These heaters are eco-friendly and energy efficient. A roof-mounted solar cell collects the heat from the sun and converts it to an antifreeze-like fluid that travels to the water tank through a closed-loop system.

They offer exceptional summer savings, making them desirable in warm, sunny areas. However, savings decline on chilly and rainy days.

5. Condensing Water Heater

If you need more than 55 gallons of water daily and use gas for heating, condensing water heaters are an option.

In contrast to typical water heaters, these versions collect gasses that may otherwise escape through the flue, saving energy.

Traditional Tank Storage Water Heaters Vs Tankless Water Heaters – The Ultimate Debate

With the development of technology, water heaters have also evolved to become simpler and more effective. Tankless water heaters have grown popular among people who love convenience and efficiency.

  • Size

Tank storage water heaters take up more space for installation and maintenance. If you want a smarter and more compact water heater, tankless is the way to go!

  • Storage

Tankless water heaters can supply unlimited hot water on demand, whereas tank storage can only store a set amount of water. So, for bigger families – tankless water heaters are more appropriate.

  • Installation

Traditional water heaters need to be installed on the load-bearing wall. As long as you have the hot and cold water pipe channels arranged in advance, you can easily install a tankless water heater!

  • Energy Usage

Since tankless heaters only supply warm water on demand, they consume energy for a shorter period. Tank storage water heaters hold heated water all day long.

  • Cleaning and Maintenance

If you’re using a traditional water heater, you must flush the tank twice a year to clean the sediment and mineral scale. Tankless heaters are non-scaling so you require no special maintenance!

 Tankless water heaters are always the better option if you’re seeking a water heater to match a spontaneous lifestyle.

75 Gallon Water Heater – The Significance

Any home or business with a high usage rate of 100 gallons per hour can use 75-gallon water heaters. 

  • Commercial Purpose

Restaurants that have mechanical ware washers need a 75-gallon water heater at the very least.

  • Large Capacity

Different water heaters—even 75-gallon gas water heaters—will have varying capacities for the peak hour demand. A 75-gallon gas water heater’s lowest capacity for peak hour demand will be 75 gallons. But if it’s effective enough, it may be able to handle up to 150 gallons.

  •  Efficiency

75-gallon water heaters can support a family of five even if you use water frequently for multiple purposes.

Popular 75 Gallon Water Heater Brands

Water heaters are an investment for your family’s healthy life, so it’s important to carefully evaluate them before purchasing one. 

The most well-known brands include –

  •  Rheem Manufacturing

Founded in 1925, famous for residential and commercial water heaters and boilers, as well as heating, ventilating, and air conditioning equipment.

  • Ao Smith

It’s currently the largest manufacturer in North America, founded by Ao Smith in  1904.

  • Reliance

Started in 1981 as a part of the State Industries – Reliance was bought by Ao Smith in 2001. They provide some of the most environmentally friendly heaters in the market.

Check out our other article to learn what brand of water heater is the most reliable.

Top 75 Gallon Water Heaters

It’s always recommended to purchase a water heater after thoroughly researching the brands and considering the public reviews. Here are some of the best 75-gallon water heaters you can check out –

  1. Rheem Mid-Efficiency 7.0GPM Indoor Natural Gas Tankless Water Heater
Rheem Mid-Efficiency 7.0GPM Indoor Natural Gas Tankless Water Heater

Since this water heater is tankless, it’s cost-saving and energy efficient. It cuts down energy consumption by automatically adjusting to the amount of energy needed to heat the water. You can easily adjust the temperature of the water from 85F -140F.


  • For better air quality, Rheem uses emission reduction technologies. All models meet or surpass the strict governmental specifications of the 50 states in the US.
  • Even if you take several back-to-back showers, Rheem tankless gas water heaters never run out of hot water since they continuously supply it.
  • Rheem’s tankless gas water heaters come with a Water Savings Setting as part of the brand’s commitment to sustainability. By enabling this setting, you can reduce water waste by up to 1,100 gallons yearly.
  1. AO Smith BTH-199 Tank Type Water Heater
AO Smith BTH-199 Tank Type Water Heater with Commercial Natural Gas

This water heater comes with an intelligent control system that has an LCD. PERMAGLAS ultra coat glass lining makes the product long-lasting and durable. In various water conditions, powered anodes offer robust tank protection.


  • A submerged combustion chamber with a helical heat exchanger is present. For maximum safety, the heat exchanger coil is covered internally and externally in glass.
  • The spiral heat exchanger uses centrifugal force to keep hot burner gasses spinning while maximizing heat transfer efficiency. Additionally, it prevents water-side surfaces from developing the limescale, maintaining energy efficiency over time.
  • The front-located exhaust and condensate connectors make installation and access simple.
  1. Rheem Prestige Condensing Tankless Gas Indoor Natural Gas Water Heater
Rheem Prestige Condensing Tankless Gas Indoor Natural Gas Water Heater With Built-in Recirculation 11.0 GPM - RTGH-RH11DVLN

You can get hot water without any wait or waste with the help of this product. The water savings settings ensure low operating costs and high energy efficiency. 

The advanced water and gas leak detection will immediately shut down the unit if any error occurs – with this water heater at home, you never have to worry about safety!


  • Besides providing immediate hot water, the built-in recirculation pump with auto-learning programming only provides it when necessary. 
  • It provides the lowest activation flow in the industry – the minimum activation flow rate is .50 GPM. Flame sensors, overheat cutoff switches, gas and water leak detectors, and exhaust and water temperature sensors are the additional safety measures.
  • Depending on the inlet temperature, it can be used with up to 5 bathrooms, venting up to 100′ with 3″ PVC or up to 50′ with 2″ PVC pipe.
  1. Rheem Prestige High-Efficiency Indoor Natural Gas Tankless Water Heater
Rheem Prestige High Efficiency 9.5GPM Indoor Natural Gas Tankless Water Heater

This heater can be used in residential areas with 4 showers, and the cold and hot water inlets ensure ultimate convenience. The thermostat wire is 10 feet long, and the digital remote control is pre-wired. You can experience easy installation and service with the self-diagnostic system!


  • You’ll always have access to hot water thanks to the minimum flow rate.26 GPM and minimum activation flow rate of.40 GPM, even when the demand is low.
  • By maintaining a ready-fire state for consecutive hot water needs, the hot start programming reduces cold water bursts.
  • Get quicker hot water at the tap and save up to 12,000 gallons of water annually.

5. Airthereal Electric Tankless Water Heater

Airthereal Electric Tankless Water Heater 18kW, 240Volts - Endless On-Demand Hot Water

A 240-gallon Airthereal water heater can supply without preheating, temperature swings, or running out of hot water in the tank, limitless hot water on demand. Compared to a conventional water heater with a tank, this wall-mounted water heater takes up 90% less room.


  • You can rest easy knowing you have safe, on-demand hot water to use on your schedule thanks to high-temperature protection, dry heating prevention, and electrical leakage safety.
  •  To avoid electric leakage and water pipe corrosion, the electric and fluid systems are entirely segregated.
  • Compared to a standard tank water heater, the self-modulating temperature technology only uses energy to heat water while it’s being used, saving you up to 50% on water heating expenses.

6. Rheem G75-125 Natural Gas Universal Commercial Water Heater

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

Its compact form makes it ideal for small apartments. The top, front, and backwater inlets/outlets, thin jacket diameters, and short heights provide the greatest degree of installation versatility.

The heater has an elevated port design and precision burners made of stainless steel that’s high in chromium. You can easily check and maintain the burner assemblies by sliding them out like drawers. 


  • Universal produces a superior heat exchanger design using its unique steel formulation, patented multi-flue design, and two layers of porcelain enamel.
  • Low-profile dampers reduce the overall height of the product. The heavy-strength vent coverings can overcome the strain of installation.
  • The anode design has multiple magnesium rods for increased corrosion resistance and long tank life.

7. Reliance 6 75 XRRS 75 Gallon Gas Water Heater

Reliance 6 75 XRRS 75 Gallon Gas Water Heater

Its electronic gas control valve ensures accurate temperature control and operational status. The non-CFC foam insulation makes this heater environmentally friendly. Glass-lined tanks with strong anode rods can withstand corrosion and offer a long life.


  • Self-cleaning PEX dip tube helps in preventing silt buildup and preserving effectiveness.
  • Without using matches, a piezo igniter allows simple “one-hand” pilot ignition.

8. AO Smith BTR-200 Tank Type Water Heater with Commercial Natural Gas

AO Smith BTR-200 Tank Type Water Heater with Commercial Natural Gas

For both new construction and replacement applications, the Master-Fit BTR series with automated flue damper offers exceptional performance and maximum installation flexibility. Additionally, it has low installation clearances and various water connection placement options.


  • The self-cleaning system decreases water heating costs and maintains rated thermal efficiency.
  • Responds in less than a second when a flame fails.
  • Made to greatly reduce or completely remove the buildup of silt inside the tank.

How to Choose An Electric Water Heater for Your Household

The electric water heater’s power is measured with Kilowatts (kW), which often refers to the power of the electric heating tube in the water heater. The amount of heat produced increases with power. This creates a shorter heating period and greater stress on the wire.

Common electric water heaters available on the market have power ratings of 6.5kW, 9kW, 14kW, 18kW, etc.

  • Know Your Needs

When buying an electric tankless water heater, you can select your ideal power level for your needs, the number of faucets, and your water usage habits.

  • Consider the Climate

The south typically experiences warmer weather, reducing demands on the water heater’s heat load (electricity). From a financial perspective, 14kW water heaters can provide the heat needed for a comfortable bath.

Families in the north should choose an 18kW water heater because the water temperature is lower there, particularly in the winter when the heat load (power) of the water heater must be sufficient to meet the needs for a comfortable bath.

  • Number of Showers

Choose a water heater with a high-power capacity if you have several showers, or try to install multiple water heaters.

Purchasing A Water Heater – A Complete Buying Guide

Water heaters can be of many types – gas, electric, heat pump, solar, etc. Your water heater is an essential part of the household and it can significantly simplify your life. So, here are the things you should consider before getting one –

  • Capacity

Tank water heaters can frequently hold up to 75 gallons. The size you purchase will depend on how many people will be living in your home as well as your peak water demand.

It’s crucial to consider the first-hour rating for storage tank water heaters, which is the volume of water the heater can produce in an hour starting from a full tank.

Tankless water heaters don’t hold a lot of water, so the gallons-per-minute rating (GPM) is the one you’re looking for. This figure indicates how much hot water the heater can produce over a specific length of time.

  • Warranty

Select a water heater with the longest warranty offered. Models with longer warranties typically have larger elements or burners that can heat water more quickly and better insulation to prevent heat loss.

  • Anti-Scaling Devices

You don’t need to spend a lot of money on fancy features to have a water heater that lasts, even though scale can reduce the life of the heating element. Simply look for one that comes with a 12-year warranty and usually has a longer or thicker element.

  • Digital Displays

These offer operation customization and level monitoring. Some electric/heat pump hybrid water heaters allow you to establish a vacation mode that just uses the heat pump to increase efficiency while you’re away.

Solar water heater displays often show the tank and the collector’s temperatures, pressure readings, and other data.

 Finally, choose a water heater that best suits your budget and needs. You can find numerous options available in the market and online – always make sure to compare features and prices before purchasing a water heater!

FAQs on 75 Gallon Water Heater

  1. Can I drink the water warmed up by a water heater?

Please refrain from consuming water straight from the water heater. It’s not encouraged to use warm water for drinking since the water coming from the faucets must be of drinking water quality and untreated plumbing can create a microbial danger.

  1. Is a 75-gallon water heater appropriate for a family of 5 members?

A 75-gallon gas water heater should be more than enough for a household of five or six. This should provide you with sufficient hot water to suit your demands, even if you frequently use other common equipment like washing machines.

However, you could require a second water heater if there are more than 8–10 people.

  1. How long does a 75-gallon water heater last?

A water heater should last you between 8 and 15 years; however, depending on the water heater’s quality and how well you take care of it, its lifespan may be greater or shorter.

  1. How do I know if my water heater needs to be repaired?

If your water heater is leaking or not producing enough hot water, consider repair or replacement.


It’s crucial to know the features, warranty, and quality of the water heater before purchasing one. Since there’s an abundance of water heaters in the market, it may be difficult to choose one. 

The best 75-gallon water heater can save you time, and energy, and increase efficiency. A smart control system and sleek PERMAGLAS coating make Ao Smith one of the top picks. 

If you’re looking for a high-efficiency, indoor, and tankless heater – Rheem Prestige is also a great option. Remember that safe water leads to a healthy life!

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