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Best 40 Gallon Hot Water Heater (2023 Update)

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If you’re looking for a reliable hot water heater that can supply hot water to a medium-sized house or apartment, you might consider getting a 40-gallon hot water heater. But with so many options on the market, finding the best one for your needs can be challenging. Here are some factors to consider when you're shopping for a 40-gallon hot water heater.

Firstly, you should think about your household's hot water demands. The size of your family and the number of appliances that require hot water will determine the ideal capacity and recovery rate of your water heater. You should also choose between gas or electric heating, which will impact the heater’s efficiency and longevity. Additionally, check product specifications such as warranty, energy efficiency, and maintenance requirements to ensure you’re making the right investment.

If you’re still unsure which hot water heater is best for you, here are a few questions to consider: Do you need a rapid recovery rate? Are you looking for a heater that’s energy efficient and environmentally friendly? What is the current budget you have allocated for a new water heater? Considering these questions can help narrow down the options to find the perfect 40-gallon hot water heater for your needs and budget.

10 Best 40 Gallon Hot Water Heater

# Product Image Product Name Product Notes Check Price
1

It is ideal for providing continuous hot water in indoor settings using natural gas.

2

It is ideal for protecting water heaters from corrosion and extending the lifespan of the tank.

3

This product is ideal for providing hot water storage in a residential or small commercial setting.

4

This product is ideal for residential use as an atmospheric water heater that runs on LP gas.

5

Ideal for providing hot water on demand in indoor spaces through natural gas-powered condensing technology with fast and efficient performance.

6

The product is ideal for insulating water heaters and reducing energy loss.

7

This product is ideal for efficiently heating a large volume of water for residential or commercial use.

8

It is ideal for providing hot water for residential or commercial use.

9

Ideal for providing hot water to an entire house without bulky storage tanks, saving space and energy costs.

10

Ideal for homes and businesses seeking an energy-efficient and space-saving water heating solution.

It is ideal for providing continuous hot water in indoor settings using natural gas.

It is ideal for protecting water heaters from corrosion and extending the lifespan of the tank.

This product is ideal for providing hot water storage in a residential or small commercial setting.

This product is ideal for residential use as an atmospheric water heater that runs on LP gas.

Ideal for providing hot water on demand in indoor spaces through natural gas-powered condensing technology with fast and efficient performance.

The product is ideal for insulating water heaters and reducing energy loss.

This product is ideal for efficiently heating a large volume of water for residential or commercial use.

It is ideal for providing hot water for residential or commercial use.

Ideal for providing hot water to an entire house without bulky storage tanks, saving space and energy costs.

Ideal for homes and businesses seeking an energy-efficient and space-saving water heating solution.

1. Rinnai Ru130in Condensing Tankless Hot Water Heater, 7 Gpm, Natural Gas, Indoor Installation

Introducing the ultimate solution to your hot water needs – the Endless Hot Water system. Say goodbye to the inconvenience of running out of hot water mid-shower, as this system provides an unlimited hot water flow throughout your entire house.

The compact and durable design of the Endless Hot Water system makes it easy to install, although professional installation is recommended for optimal performance. Not only does this system provide endless hot water, it also conserves energy with its space-saving design. The system heats only when necessary, ensuring that energy is not wasted.

With a hot water flow rate of up to 7 GPM, the Endless Hot Water system provides a powerful, constant stream of hot water. Its instant heating feature, equipped with Circ-Logic technology, reduces wait time for hot water through scheduled or on-demand recirculation.

Worried about the longevity of your hot water system? The Endless Hot Water system comes with a 15-year residential guarantee for the heat exchanger, and a 5-year guarantee for labor. Additionally, parts are guaranteed for 1 year.

Stay connected to your hot water system with Wifi monitoring, giving you peace of mind that your system is running smoothly. Upgrade to the Endless Hot Water system for a hassle-free, uninterrupted hot water supply.

2. Anode Rod For 40-89 Gallon Tank Water Heater With Power Supply

Looking for a solution to get rid of the unpleasant smell of rotten eggs from your water heater? Look no further than the Quick Relief Odor powered anode rod. This innovative product offers a simple and effective way to eliminate unpleasant odors, leaving your water heater smelling fresh and clean.

Designed to provide better protection for your water heater, the powered anode rod is more active and effective at protecting the inner surface of your water heater from impurities in the water. This means that your water heater will last longer and operate more efficiently, saving you money on repairs and replacements in the long run.

Installation is a breeze with the Quick Relief Odor powered anode rod. The product comes with detailed step-by-step instructions that make it easy for anyone to complete the installation in a short amount of time, with no extra cost. Whether you're a DIY enthusiast or a professional plumber, you'll appreciate the convenience and simplicity of this product.

So why wait? If you're tired of dealing with the unpleasant smell of rotten eggs in your water heater, choose the Quick Relief Odor powered anode rod today. With its superior odor-fighting capabilities and easy installation process, it's the perfect solution for anyone looking to improve the performance and longevity of their water heater.

3. Bosch Thermotechnology Tronic 5000 T 40-Gallon Standard Electric Storage Water Heater (Es40m)

The 20.25" W x 49.14" H x 20.25" L dimensions make this water heater an excellent fit for tight spaces such as maintenance closets, access closets under the stairs, and crawl spaces. It's also perfect for replacement projects.

This water heater is built to last with two magnesium anode rods for extra tank protection and a dielectric heat trap. The heavy gauge steel tank ensures extra years of trouble-free service. The glass-lined steel tank helps prevent corrosion, adding to its durability.

The water heater comes with a 10-year tank and parts limited warranty, providing peace of mind.

The HFO foam insulation reduces fuel costs and increases energy efficiency, making this water heater an eco-friendly option. The double heating elements conserve energy, while the Incoloy elements ensure a long-lasting unit.

For added convenience, the electric hot and cold water connections are factory-installed for extended tank life. Maintenance is made easy with the easy-to-use plastic drain valve. Factory-installed heat traps reduce heat loss, and a temperature and pressure relief valve is included. The fully-automatic surface mount thermostats make it effortless to use.

4. Defender Lp Gas Water Heater – 40gal, High-Efficiency

Looking for a reliable water heater to supply hot water for a 2-3 person household? Look no further than this propane-powered unit, designed to meet all your home's hot water needs. With a 40-gallon capacity and an impressive BTU input of 36000, this water heater is capable of delivering up to 76 gallons of hot water in its first hour of operation.

Measuring 60.125 inches in height and 20 inches in diameter, this atmospheric-vented unit is compact enough to fit in most utility rooms or basements. Despite its small size, it weighs a sturdy 136 pounds, making it durable and long-lasting.

This water heater also boasts an impressive energy factor of 0.62, ensuring that it operates efficiently and uses less energy than other models on the market. While it is not Energy Star rated, its recovery efficiency of 80% ensures that it heats water quickly and efficiently, even at high altitudes of up to 2000 feet.

Designed for plumbing applications, this water heater features a 3/4 inch water connection and a 3 x 4 inch vent size. And with a 6-year limited warranty on both the tank and component parts, you can rest assured that this unit will provide reliable hot water for years to come.

5. Noritz Nrc66dvng Indoor Condensing Direct Tankless Hot Water Heater, 6.6 Gpm – Natural Gas

The product being reviewed is a top-quality, high-performance water heater that promises an endless supply of hot water. This water heater is specially designed to cater to the needs of those who require hot water on a continuous basis without any interruption. With its advanced features and cutting-edge technology, this water heater is a must-have for all those who want a reliable and efficient source of hot water.

One of the key features of this water heater is its ability to be vented with Schedule 40 PVC Pipe and Fitting. This unique feature makes it easy to install and ensures that the water heater can be easily integrated into any plumbing system. Additionally, the water heater is highly efficient and has a low Nox rating, making it environmentally friendly and cost-effective.

The water heater also comes equipped with a remote thermostat and a 6' power cord, making it easy to control and operate. The remote thermostat allows users to adjust the temperature of the water heater to their desired level, while the power cord ensures that the water heater can be easily plugged into any standard outlet.

Another great feature of this water heater is its high efficiency. It is designed to provide users with a constant supply of hot water, without wasting energy or heat. This makes it an ideal choice for those who are looking for an energy-efficient and cost-effective solution to their hot water needs.

6. 40 Gallon Tank Nasatek Reflective Poly-Air Water Heater Jacket Insulation Kit

The energy-conscious and budget-savvy homeowners will love this innovative product that promises to save up to 20% on energy bills. This hot water heater insulation blanket is designed to add R-5 to tank performance, which results in significant energy savings.

The lightweight construction of the blanket makes it easy to install by anyone, and it fits most gas, oil, and electric hot water heaters up to an 80-gallon tank. This feature ensures that the blanket is versatile and can cater to the needs of most households.

The insulation blanket is hypoallergenic and has been rated for indoor air quality. It is also non-toxic, ensuring that it does not cause any skin, eye, or throat irritations. This makes it a safe and healthy choice for families with children or pets.

This insulation blanket has passed stringent California water heater insulation fire tests, making it Class 1 and Class A fire rated. This feature ensures that it meets the highest safety standards and can withstand high temperatures without posing a fire hazard.

The insulation blanket also increases the recovery rate of the tank during cycles. It remains unaffected by humidity and moisture, ensuring consistent performance throughout its lifespan.

7. Ao Smith 40 Gallon 40,000 Btu Water Heater

The 40 gallon tank with a 40,000 BTU capacity is a reliable and efficient heating solution for your home. Equipped with a GCR-40 standard vent, this tank is designed to efficiently and safely vent exhaust gases outside your home. This tank is built to last, with a 6 year limited warranty. The tank's durable construction ensures that it will provide years of trouble-free service.

Measuring 22 inches in diameter and 60.5 inches in height, this tank is compact enough to fit in a variety of spaces, yet large enough to provide ample hot water for your household needs. Whether you're running a bath, doing laundry, or washing dishes, this tank has the capacity to keep up with your hot water demands.

With a 40,000 BTU capacity, this tank delivers a powerful and consistent flow of hot water. The tank's high efficiency design ensures that it uses less energy than traditional tanks, which can save you money on your energy bills. The tank's advanced features, such as a temperature and pressure relief valve, ensure that it operates safely and reliably.

8. Ao Smith 40 Gal 36,000 Btu Water Heater

Introducing a reliable and efficient water heater – the 40 gallon tank equipped with a powerful 36,000 BTU gas burner. This water heater is perfect for households of all sizes, providing ample hot water supply for daily needs. The GCR-40 standard vent ensures safe and proper ventilation, while the 6 year limited tank warranty gives you peace of mind knowing that your investment is protected.

This 40 gallon tank is built to last, made from durable materials that can withstand even the toughest conditions. The 36,000 BTU gas burner delivers fast heating, allowing you to enjoy hot water in no time. Whether it's for a refreshing shower or a warm bath, this water heater has got you covered.

The GCR-40 standard vent is designed with safety in mind. It effectively removes exhaust gases out of your home, preventing any harmful carbon monoxide buildup. With this feature, you can enjoy the comfort of hot water without worrying about your family's safety.

To further ensure your satisfaction, this water heater comes with a 6 year limited tank warranty. This means that you can have a worry-free experience, knowing that any defects or issues will be covered within the warranty period.

9. Titan Tankless N-210 Whole House Water Heater System

Looking for a reliable and cost-effective solution to your hot water needs? Look no further than this high-quality water heater, designed to provide endless hot water for your entire home while helping you save up to 50% on your hot water bill!

With its advanced technology and innovative design, this water heater is able to deliver a steady stream of hot water whenever you need it, without the need for a large storage tank or other bulky equipment. Whether you're taking a shower, washing dishes, or doing laundry, you can trust this water heater to provide the hot water you need, when you need it.

So why wait? If you're tired of running out of hot water or paying too much for your hot water bill, invest in this top-quality water heater today and start enjoying all the benefits of endless hot water and significant savings on your energy costs!

10. Titan N-100 Electronic Digital Tankless Water Heater By Niagara Industries Inc. 29 Years In Business

The product being reviewed is a cutting-edge water heating system that offers endless hot water, space savings, energy efficiency, and a patented design assembly. With 29 years of experience in the industry, this product has earned a reputation for delivering reliable and efficient performance.

One of the most significant advantages of this water heating system is its ability to provide endless hot water. Unlike traditional water heaters, which have a limited supply of hot water, this system heats water on demand, ensuring that you always have hot water available when you need it. This feature is particularly useful for households with multiple occupants or those that require hot water for extended periods.

Another notable feature of this water heating system is its space-saving design. Unlike bulky water heaters that take up a considerable amount of space, this product is compact and can be installed in tight spaces without compromising on performance. This makes it an ideal choice for homeowners with limited space or those looking to free up space in their homes.

In addition to its space-saving features, this water heating system is also energy efficient. It is UL compliant and ETL Lead Free Certified, ensuring that it meets the highest standards for safety and performance. This system reduces energy consumption, which can result in significant savings on your energy bills.

With 29 years of experience in the industry, the manufacturer has a proven track record of delivering reliable and high-quality water heating systems. The patented design assembly ensures easy installation and maintenance, making it a popular choice among homeowners and contractors alike.

Best 40 Gallon Hot Water Heater FAQs

Are tankless 40 gallon hot water heaters more energy-efficient than traditional ones?

Tankless water heaters are generally considered to be more energy-efficient than traditional ones. This is because they heat water on demand, rather than storing pre-heated water in a tank, which can result in energy loss from standby heat. Tankless heaters also have a longer lifespan than traditional ones, which means that they require less frequent replacement and can therefore save money on maintenance costs over time.

When it comes to 40-gallon tankless water heaters specifically, their energy efficiency will depend on a variety of factors, including the size of the unit, the energy source, and the specific model. However, in general, tankless water heaters are more energy-efficient than traditional ones, which means that they can help to save money on energy bills and reduce environmental impact. Ultimately, the decision to choose a tankless or traditional water heater will depend on individual needs and considerations, such as upfront costs, available space, and desired level of energy efficiency.

Are there any brands or models of 40 gallon hot water heaters that are particularly reliable or long-lasting?

There are several brands and models of 40-gallon hot water heaters that are known for their reliability and longevity. One of the most popular and trusted brands is Rheem, which offers a range of 40-gallon hot water heaters in both gas and electric models. Rheem's water heaters are known for their durability and energy efficiency, and they also come with a strong warranty.

Another reliable brand is Bradford White, which offers a range of 40-gallon gas and electric water heaters. Bradford White's water heaters are known for their high-quality construction and long-lasting performance. They also offer a variety of features, such as advanced temperature control and self-cleaning systems, to help keep your water heater running smoothly.

Other brands to consider include AO Smith, State, and Whirlpool, all of which offer a range of reliable and long-lasting 40-gallon hot water heaters. When choosing a brand or model, it's important to consider factors such as energy efficiency, warranty, and overall build quality to ensure that you get the best value for your money.

How do I know if a 40 gallon hot water heater is the right size for my household's needs?

To determine if a 40 gallon hot water heater is the right size for your household's needs, you need to consider a few factors. The size of your household, the number of bathrooms, and the hot water usage are some of the factors that you need to take into account.

Typically, a 40 gallon hot water heater is suitable for a household of 2-3 people. If you have more people in your household or you use a lot of hot water, a larger capacity water heater may be required.

To estimate the hot water usage, you can consider the number of showers, baths, and appliances that require hot water in your household. A standard showerhead uses 2.5 gallons of hot water per minute, while a dishwasher uses 6 gallons per cycle.

It's also important to consider the recovery rate of the water heater. The recovery rate is the amount of hot water that the heater can produce in an hour. If you use a lot of hot water, you may need a water heater with a higher recovery rate to ensure that you have enough hot water when you need it.

Overall, it's important to carefully consider your household's hot water needs before selecting a water heater. If you're unsure, it's always best to consult with a professional plumber or contractor.

How easy is it to install a 40 gallon hot water heater, and can I do it myself?

The installation of a 40-gallon hot water heater can be a challenging task, but it is not impossible to do it yourself if you have some basic plumbing skills. However, it is important to note that the installation process involves working with electricity, gas lines, and water lines, which can be dangerous if not handled properly.

Before starting the installation process, you should make sure that you have all the necessary tools, such as wrenches, pliers, and a pipe cutter. You should also read the manufacturer's instructions carefully to ensure that you follow all the necessary steps.

The installation process typically involves draining the old water heater, disconnecting the gas and water lines, removing the old unit, and then installing the new one. You will also need to connect the gas and water lines, and ensure that there are no leaks before turning on the power.

If you are not confident in your ability to install a hot water heater yourself, it is recommended that you hire a licensed plumber or contractor to do the job for you. This will ensure that the installation is done safely and correctly, and that your new hot water heater will work efficiently.

How efficient are 40 gallon hot water heaters compared to other sizes?

The efficiency of a 40-gallon hot water heater compared to other sizes depends on various factors. Generally, a 40-gallon hot water heater is suitable for a small family or household with lower hot water requirements. It can provide enough hot water for a shower, washing dishes, and doing laundry.

However, if you have a larger family or higher hot water demands, a 40-gallon hot water heater may not be efficient enough. In such cases, you may want to consider a larger size, such as a 50 or 75-gallon hot water heater.

Furthermore, the efficiency of a hot water heater depends on its energy source, whether it's electric, gas, or propane. For example, an electric 40-gallon hot water heater may be less efficient than a gas or propane-powered one.

In conclusion, the efficiency of a 40-gallon hot water heater depends on your household's hot water needs, family size, and energy source. It is best to consult with a professional plumber or contractor to determine the most efficient size and type of hot water heater for your home.

How much should I expect to pay for a high-quality 40 gallon hot water heater?

The cost of a high-quality 40 gallon hot water heater can vary depending on several factors. The brand, features, and level of energy efficiency can all impact the price. On average, you can expect to pay anywhere from $500 to $1,500 for a high-quality 40 gallon hot water heater. Cheaper models may have lower energy efficiency ratings and may not last as long, while more expensive models may have advanced features such as self-cleaning tanks, WiFi connectivity, and longer warranties. It's important to do your research and consider your specific needs before making a purchase. Additionally, be sure to factor in installation costs, which can range from a few hundred to over a thousand dollars depending on the complexity of the installation and your location.

What are the most important features to consider when choosing a 40 gallon hot water heater?

When choosing a 40 gallon hot water heater, there are several important features to consider. Firstly, it is important to determine the type of fuel source you want to use, whether it’s natural gas, propane, or electricity. This will depend on the availability and cost of fuel in your area.

Another important factor to consider is the energy efficiency rating of the hot water heater. Look for models with high Energy Factor (EF) ratings, which indicates the efficiency with which the unit uses energy to heat water.

The size and dimensions of the hot water heater are also important considerations. You need to ensure that the unit fits in the space available and can be installed safely.

Other features to consider include the recovery rate, which determines how quickly the unit can heat up a new tank of water, and the warranty period, which can provide peace of mind and protection against defects. Additionally, some models may offer advanced features such as digital displays, temperature controls, and self-cleaning mechanisms.

Overall, it is important to choose a hot water heater that suits your household's needs, budget, and energy goals.

What are the top-rated 40 gallon hot water heaters on the market?

There are several top-rated 40-gallon hot water heaters available in the market, and the best one for you will depend on your specific needs and preferences. However, here are some of the most popular and highly rated ones:

1. Rheem Performance Platinum 40 Gal. Tall 12-Year 38,000 BTU Natural Gas Water Heater

2. AO Smith Signature Premier 40-Gallon Tall 12-Year Limited Natural Gas Water Heater

3. Bradford White 40 Gallon Natural Gas Water Heater

4. Westinghouse 40 Gallon Electric Water Heater

5. Rheem Performance 40 Gal. Tall 6-Year 4500/4500-Watt Elements Electric Water Heater

These water heaters have been rated highly by consumers and experts alike for their reliability, durability, efficiency, and affordability. It's important to research and compare each product's features and specifications to determine which one meets your specific needs and budget. Additionally, it's always recommended to consult with a licensed plumber or contractor to ensure proper installation and maintenance of your hot water heater.

What is the average lifespan of a 40 gallon hot water heater?

The average lifespan of a 40 gallon hot water heater depends on various factors, such as the quality of the heater, usage, maintenance, and the quality of the water. However, on average, a 40 gallon hot water heater can last between 8 to 12 years. Regular maintenance, such as flushing the tank and checking the anode rod, can extend the life of the water heater. Additionally, the quality of the water can also affect the lifespan of the heater. Hard water with high mineral content can cause sediment buildup, which can lead to corrosion and ultimately shorten the lifespan of the heater. Therefore, it's important to consider factors such as maintenance and water quality when estimating the lifespan of a 40 gallon hot water heater.

What maintenance is required to keep a 40 gallon hot water heater running smoothly?

To keep a 40 gallon hot water heater running smoothly, regular maintenance is necessary. Here are some of the maintenance tasks that should be performed:

1. Check the pressure relief valve: This valve should be checked periodically to ensure it is functioning correctly. A faulty valve can create a safety hazard.

2. Flush the tank: Over time, sediment can accumulate at the bottom of the tank. Flushing the tank periodically can prevent sediment buildup and improve the efficiency of the heater.

3. Check the anode rod: The anode rod is a component that helps prevent corrosion in the tank. It should be checked at least once a year and replaced if necessary.

4. Test the thermostat: The thermostat is responsible for regulating the temperature of the water. It should be tested periodically to ensure it is functioning correctly.

5. Inspect for leaks: Check the connections and hoses for leaks. A leak can cause damage to the surrounding area and increase energy costs.

By performing these maintenance tasks regularly, you can extend the life of your hot water heater and ensure it is running efficiently.

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