5 Best 40 Gallon Gas Water Heater {Expert Reviews}

The gallon gas water heater is one essential piece of equipment in your bathroom, providing multiple benefits.

Just imagine you come home after a very hectic day and want a quick shower to get that stress out of your mind and relax your body. The best solution is the 40-gallon gas water heater, which is a rapid solution to your problem because it is quick and more advanced than other heaters in the market.

It has several features which make your life much easier. Be it freezing weather or an extreme winter season; this appliance solves every issue. It is durable and easy to maintain, which suits most families irrespective of their members.

This article will talk about the 40-gallon gas water heater in detail. Here we will discuss the buying guide and some of the most inexpensive and best-quality water heaters available. So what are you waiting for?

Let’s get started!

What is a 40-Gallon Gas Water Heater?

The 40-gallon gas water heater is the most suitable bathroom appliance during the winter. Earlier, we all used to have to skip our bathing routine during the peak of the winter season. But, Guess what? Now we all have a solution!

This modern technology will save you from your bathing fear. This is advanced modern technology, so you immediately get hot water whenever possible. There are many variants present in the market that come with additional benefits.

You can buy any one depending on your family size, budget, and other requirements. Some options have an insulated tank that will store the remaining hot water, thus limiting water wastage.

Despite the equipment or the appliance being cheap and affordable, the users do not need any technical knowledge to use the equipment. Another advantage of using this equipment is that a few equipment runs on gas or fuel.

How Does a 40 Gallon Gas Water Heater Function?

This appliance is very easy to use because you can permanently save the extra hot water in an insulated tank. You can switch this equipment on and off by just using a knob.

The cold water supply tube leads to complex water entry into the gas system. The equipment is made of insulating steel, which protects the interior and exterior parts, thus enabling the equipment to heat up quickly.

The cold water will slowly get heated with the help of the gas burner. It also has a gas regulator reassembly control which helps the user determine the gas burner’s temperature.

This will also help to regulate the temperature and the equipment when it reaches a specific temperature. The user can quickly turn the equipment off so that the water is warm enough.

Finally, the hot water will leave the tank through discharge and save the extra in the insulated tank. The extra steam present in the equipment leaves it through a chimney, tank, or vent pipe.

EZ Ultra HE Natural Gas Indoor Condensing Tankless Water Heater is one of the most highly rated water heaters available in the market. It is equipped with safety features and has been tested in American Laboratories. It will fulfill the demands of a small-sized family of about 4-5 members.

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The Best 40-Gallon Gas Water Heater in the Market

The gas water heating system is faster than the hybrid and electrical water heater systems. These water heater systems do not require high maintenance and routine check-ups or inspections. Thus, it saves a considerable amount of time for the user.

They are effortless to install, especially if you already have an open gas line in your home. However, if you want to learn how to install it, you can quickly call professional help.

Here we are providing some of the best 40-gallon gas water heaters available in the market.

Before discussing them in detail, here is a list of all the water heaters to save you time:

Let’s get started on the details now!

Image	Product	Features	Price
	EZ Ultra HE Natural Gas Indoor Condensing Tankless Water Heater	Technical support Affordable Fully automatic	Check PriceRead Review
	Rinnai RU180iN Condensing Tankless Hot Water Heater	Easy to install Continuous water supply Temperature control	Check PriceRead Review
	Natural Gas Tankless Water Heater Indoor	Easy to install Control Value for money	Check PriceRead Review
	Takagi T-H3S-DV-P Condensing High-Efficiency Propane Indoor Tankless Water Heater	Easy to install Affordable Certified as an energy-saver star	Check PriceRead Review
	Rheem PROG40-40N RH62 Professional Classic Tall Residential 40K BTU Atmospheric Natural Gas Water Heater, 40-Gallon	Affordable Brass material Affordable	Check PriceRead Review

1. EZ Ultra HE Natural Gas Indoor Condensing Tankless Water Heater

This condensing tankless water heater is presented by the EZ Tankless brand which has a capacity of around 3.4 Gallons. It comes in only one color, i.e., white, and the dimensions of this equipment are 27 x 14.5 x 6.5 inches.

Product Details

Usability

The power source of this equipment is the wind which means it uses gas to preheat the incoming water. This equipment is one of the most versatile water heaters available because it provides the user with unique PVC piping and a condensation trap. It has simple features, making it easy for the customer to understand.

A majority of the customers say that the 46-degree celsius is the most suitable temperature, as it will not impact the continuous flow of hot water during bathing, washing utensils, etc.

How It Performs?

The EZ Ultra H is the newest model presented by the manufacturer. It provides multiple unique features to customers. The equipment has a display option, which always helps the customers to keep a check on the temperature.

The water inlet pipe and water outlet pipe are mentioned in the equipment, which shows the entry of cold water and exit of hot water. The gas line would be required, as it works on gas and has a separate gas inlet system in the equipment. The user just needs to switch on the equipment and will get access to the hot water in certain minutes.

Important Features of the Product

1. Safety Feature

The equipment comes with a safety feature, as the gas system will automatically turn off when there is an interruption in the water supply.

2. The Vent

 It has a 2″ Solid Core Schedule 40 PVC/CPVC, which is responsible for placing the equipment horizontally or vertically. The stainless steel horizontal vent pipe and backdraft prevention device are also included in the packaging of this equipment.

3. Certification

It has been tested in American Laboratories and has an electronic control system operated by a computer chip, making it highly reliable and advanced.

4. Technology

The manufacturer has implemented the latest advanced intelligence, which also gives extra benefits by automatically remembering the temperature settings from the last usage. Thus you can always be confident about the quality and efficacy of this product.

5. Installation

There will be a booklet to install the water heater and the packaging. However, if the technicalities of installation discourage you, then you may seek professional help. The manufacturer can provide this professional help, or you will have to contact the customer care center to learn more about the licensed professionals servicing nearby your area.

Previous Models or Releases

This is the latest model presented by the manufacturer. The previous model didn’t have a digital display and was not fully automatic. This also has an automated adjustment system and also implemented an advanced intelligence design.

The manufacturer has enhanced the quality of the product, making the function more straightforward.

Advantages

• The equipment has a condensing technology and works on artificial intelligence Technology.
• The kit has high thermal efficiency and low water-pressure ignition.
• The equipment automatically adjusts the gas supply and is fully automatic. Thus it saves a lot of time for the user.
• The manufacturer provides free delivery of the equipment to the home.

Disadvantages

• The electrical plugs of this product are designed for American outlets and voltage. So if you are an International customer, you need to check these outlets and voltage by contacting the customer can center of the manufacturer before ordering it directly.
• The equipment has a capacity of 3.4 gallons which means it is enough to fulfill the requirement of a small-sized family. But if you have a joint family, you will have to look for better options in the market.
• A person with little knowledge about the machine will have to ask for professional help. Professional help will increase the cost of its installation.

Who is This Product For?

If you are looking for a gas heater with simplicity but with advanced technology, which makes you put less effort on how to use it, then this product is for you. It is good for small to medium-sized families. With its display features, it becomes a child’s play to use.

What Sets the Product Apart From its Competitors?

This product is highly affordable and comes with the latest technology and safety features, making it much more user-friendly. This product has been certified by American Laboratories, which sets it apart from the other products in the market.

 Expert Tip

This water heater is the most advanced and works on upgraded water heaters technology. Before investing in the product, we suggest our customers ask the warranty and replacement information from the customer care support of the manufacturer.

International customers will have to create adjustments for the converter or adaptor and also the importing facilities. We guarantee this equipment’s reliability and durability compared to the other competitors.

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2. Rinnai RU180iN Condensing Tankless Hot Water Heater

The RU180iN from Rinnai Store is one of the highest-rated equipment available in the market now. The equipment is straightforward to install, compact, and durable. Plus, the company’s 24*7 customer support makes it the most sought-after product.

People without technical or machinery knowledge are recommended to ask for professional help instead of installing it by themselves. Sometimes it can harm the functioning of the equipment.

Product Description

Usability

The weight of the equipment is around 64 Pounds, and the dimensions are 18.5 x 11.45 x 31.3 inches. This equipment comes in different sizes, which works in favor of the customer. The customer can choose any of the equipment depending on the size of the family.

How It Performs?

It is a space-efficient and energy-efficient equipment. It has a vital fluoride with constant steam. The external pump’s equipment reduces the user’s waiting time, thus providing a swift demand or recirculation.

It is powered by gas and requires around 120 volts for its functioning. The water can be used for laundry, dishes bathing, and showering.

Important Features of the Product

1. The Construction Flow

This is the best product for you if you want an uninterrupted flow of hot water in your house. The equipment is compact, easy to install, and durable. It has Circ-Logic, paired with an external pump so that the user can get hot water immediately.

2. The Energy-Saving Feature

It runs on heat and automatically shuts off when it is not necessary. The equipment has been designed to save a lot of space in the kitchen or bathroom, apart from energy.

3. Warranty

The warranty information is not provided online; the user has to check with the manufacturer. However, the warranty replacement is generally based on the damage to the equipment. You just have to show the buying invoice, and your job is done!

Previous Models or Releases

The company claims that the Rinnai water heater delivers hot water to every part of the home, thus providing a comfortable and easy life to the family.

To work on the same, the company has presented this model, which features an endless supply, a digital display, and a tankless hot water supply. It also gives optimal control to innovative Wi-Fi technology, which can respond to commands.

Advantages

• The main advantage of this equipment is a constant hot water supply.
• The equipment is much more durable than the other competitor in the market.
• It saves energy.
• The equipment gets tested individually, thus maintaining its trustworthiness.
• It saves valuable space.
• It comes in various sizes, providing a viable option to the customer.

Disadvantages

• The electrical plugs of this equipment are made according to the American outlets and voltages. So international customers must use an adaptor or a converter in their locality to use this equipment.
• The customer will have to show the purchasing information to take benefit of a replacement or warranty.

Who is This Product For?

If you are looking for a tankless hot water heater to solve your problems, you should buy Rinnai RU180iN Condensing Tankless Hot Water Heater. This product is affordable, durable, and can provide endless hot water.

What Sets the Product Apart From its Competitors?

This is a tankless water heater that can provide instant access to hot water in no time. The energy-saving feature is also the greatest feature of this product, which sets it unique from the other competitors in the market.

Expert Tip

The customer should invest in this product because it saves a lot of space and the electricity bill. The equipment is durable and has an automated wi-fi system to control it. So the user will not have to look for a remote whenever they want to access the equipment.

3. Natural Gas Tankless Water Heater Indoor

This indoor water heater is presented by CAMPLUX ENJOY OUTDOOR LIFE. It comes into two variants, natural gas, and liquid propane. They both have the same GPM, i.e., 2.64GPM.

The power sources of the equipment are fuel-powered, wind-powered, and electronic. A tankless water heater ensures that a low-sized family has easy access to hot water. The installation is straightforward, but we will always recommend you hire professional help if you need help understanding it.

Product Details

Usability

It is made of stainless steel and has a maximum flow rate of about ‎2.64 Gallons Per Minute. The water consumption is 10 liters per flush and is suitable for indoor use only. It has a 1-year warranty.

The equipment has a 1/2 ” BSP female to 1/2″ NPT male gas connector adapter and a standard 1/2″ BSP water fitting and gas inlet. It saves energy by switching equipment to fuel or eco gas. The company provides 24*7 customer support.

How It Performs?

The performance of this natural gas tankless water heater is the most amazing part of this equipment. It is one of the most demandable equipment in the market, which ensures or facilitates instant hot water for small Apartments, or homes.

Important Features of the Product

The other feature that makes this equipment unique is listed below:

1. No Waiting Time

Whenever you come home or think of having a warm shower, this equipment will significantly help you. This equipment can do the task in a few minutes, saving you time and a huge electricity bill.

2. The Design

The design of this water heater adds aesthetic value to your bathroom. It has a very compact design, saving a lot of space in your bathroom or home ( wherever you install it). The equipment also has a digital display which maintains the modernity of the equipment style.

3. Customer Service

The company provides 24*7 customer service by being very active through phone, online website, help desk, or live chat.

4. The Additional Feature

Several other features make this equipment unique from the other equipment in the market. For example, it has overheat protection, flame failure protection, dry combustion protection, high water pressure protection, low water flow protection, and anti-frozen protection.

Previous Models or Releases

This is the most advanced and highly anticipated water heater by Camplux. This indoor water heater is different from the other products presented by the same company because most of their product is for outdoor use only. This is made by using a highly advanced technology which tackles every problem of the user like leakage, safety from the gas, electricity, etc.

Advantages

• Energy saving and compact design
• One-year warranty support by the manufacturer
• Instant hot water
• 24 * 7 customer support by the manufacturer

Disadvantages

• The equipment is only suitable for a small size family.
• The equipment is ideal for indoor use only.
• The plugs are made according to the American outlet, so International customers must use an adaptor or converter.

Who is This Product For?

If you’re looking for a tankless water heater and a product with a warranty, less weight, and is meant for indoor use only, then you should invest in this product. Its performance is good because of the technology and the unique design.

What Sets the Product Apart From its Competitors?

This is one of the market’s highly demanded tankless water heaters and has the main power source from fuel-powered and wind-powered. Its no waiting time, and the product’s durability makes it unique in the market.

Expert Tips

 We highly recommend this product because this is one of the best indoor water heaters available. You will be amazed to know that this is the most demandable equipment,  from the other products offered by the same manufacturer. This has several safety features which make it unique from the other competitors.

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4. Takagi T-H3S-DV-P Condensing High-Efficiency Propane Indoor Tankless Water Heater

TAKAGI presents this equipment. It is space-saving and energy-saving equipment with automatic safety features. It has a capacity of around 8 gallons, and the power source is gas. It comes in only one color, i.e., white, and provides endless hot water to the family.

The plugs of this equipment are designed according to the American outlets and voltages. Thus, an international customer will have to use an adaptor for a converter. The equipment has been certified as an energy star because it saves energy.

Product Details

Usability

The weight of the equipment is around 58 LBS, and the dimensions are ‎11.25 x 17.75 x 24.88 inches. The temperature ranges from 100 to 140 degrees Celsius and is only suitable for indoor use. Warranty information is provided, and it depends on the defects and damages.

How it Performs?

The performance of this equipment is suitable for indoor use and provides 80 gallons of water per minute. We recommend this product, because it was highly efficient in completing the job quickly and efficiently.

Important Features of the Product

The other features of this equipment that enhance its performance are listed below:

1. Endless Hot Water

The customer doesn’t have to worry about water usage.

2. On-Demand Usage

The customer doesn’t have to wait very long to get hot water.

3. Space Saving And Energy Conservation

This equipment requires very small space in the bathroom and saves excessive electricity bills.

Previous Models or Releases

 TAKAGI presents several water heaters. Compared to the other products by the same manufacturer, the unique feature of this product is the power source (gas-powered) and its size, which saves a lot of space.

Advantages

• It fulfills the need for endless hot water
• The design of this equipment is space-saving
• The equipment saves a lot of energy and has computerized safety features
• The manufacturer provides 24*7 customer support
• The warranty information is provided online

Disadvantages

• The plugs are designed for American voltages and outlets. So, international customers must contact the customer care center before making an order.
• The equipment is only suitable for indoor use and sufficient for small families.

Who is this product for?

If you are very concerned about space and energy-saving equipment that fulfills its objective and is highly practical, then you should invest in this product. It has been certified as an energy star and provides endless hot water to the user.

What sets the Product apart from its competitors?’

This high-efficiency Propane Indoor Tankless Water Heater provides several safety and energy-saving features to its customers. The access to endless hot water and on-demand usage sets it unique from the other competitors in the market.

Expert Tips

We highly recommend this product when you want equipment occupying only a little space in the bathroom. Furthermore, it is a durable product, so you don’t have to be much careful about its exposure and maintenance. It has computerized safety features, which enhance the value of this equipment.

5. Rheem PROG40-40N RH62 Professional Classic

Rheem presents this equipment. It has a capacity of around 40 gallons, and the power source is wind. It comes in only one color, i.e., gray, and the dimensions are 20 x 20 x 50 inches.

This equipment’s electrical plugs and voltage are designed for the US, so international customers must use a converter or adaptor.

It is always recommended that international customers should also perform a compatibility test before purchasing the equipment. The warranty information is not provided online.

Product Details

Usability

The material of the equipment is brass, and the weight of the equipment is around 149 pounds. The dimensions of the product are ‎20 x 20 x 50 inches. It does not require any maintenance. The equipment has an air-for-fuel shut-off option, which is why it limits the use of energy.

The burner of equipment is eco-friendly and has low emissions. It has a low Knox design, R-Tech (registered) anode rod, and an enhanced flow brass drain valve. The anode rod help in enhancing the longevity of the tank and protect it from corrosion.

How It Performs?

The performance of this equipment is comparatively reasonable, from a few of the products available in the market. It is one of the most demandable equipment in the market, from the same manufacturer. Even though it has few customer reviews, this product is reliable, as per our in-house test.

Important Features of the Product

1. Lead Quantity

The water heater generally has a complaint of high lead quantity,  but this equipment  has an enhanced flow brass drain valve which is why there is no such complaint from the customer.

2. Customer Service

The manufacturer provides 24*7 customer support, so if you have complaints or doubts, you can call them directly, and the providers will help you with them. Even the installation process is very smooth.

Firstly, the manufacturer provides an installation guide. Still, even if the customers have a problem with the installation process, the manufacturer will send the license service providers to help the customers.

3. Durability

The material is made of brass which protects it from corrosion and rusting. The primary source is wind-powered,  and for the function, you just need to twist the knob. The durability and reliability of this product make it unique from the other products in the market.

4. Previous Models or Releases

This is the newest equipment presented by Rheem. The company is one of the most reputable companies in the field of water appliances. The equipment is eco-friendly and has long-lasting protection, so you will not suffer from leakage. The company provides 24*7 customer support.

Advantages

• The equipment has an eco-friendly burner.
• The material is brass which prevents the equipment from corrosion.
• It is easy to install.

Disadvantages

• The plug is designed for American international customers and requires an inductor or converter.
• The warranty information is unavailable online, so the buyer must call the customer care center to learn more about this information.

Who is This Product For?

If you or someone who has a very large family, then this product is meant for you. It provides 40 gallons of water to fulfill large families’ demands. Furthermore, the product is durable, and the water has less lead quantity than the other products available in the market.

What Sets the Product Apart From Its Competitors?

It is the best residential water heater, which fulfills its objective even if you have a large family. The lower lead quantity in the water makes this product unique from the other competitors.

Expert Tip

Customers should invest in this equipment only if they want to invest in something new in the market.  As this is the latest product by the manufacturer, and that’s why it has few customer reviews as compared to any other product available in the market.

Although, the company has tried its best to show transparency to its customers by sharing real customers’ experiences and comments. The company has a fantastic warranty and replacement guarantee, which is why we suggest that if you want to invest in a new product which solves all of your problems, then you should go for this one.

Buying Guide For 40 Gallon Gas Water Heater

As promised, at the beginning of this article, here in this section, we will discuss the buying guide. We have prepared this buying guide by keeping everything in mind during our in-house testing of several pieces of equipment.

We would also say that we rejected several pieces of equipment during the testing process because they were highly non-reliable and insufficient to perform the task.

It doesn’t matter if you buy anyone from the above-listed options or not, but you need to check the below-listed factors to be confident about buying any gas water heater system.  Many options are available in the market, varying in cost, size, shape, system, and style. But this entirely depends on your choice.

 The other factors will impact your decision, and these are listed down below:

1. Capacity

The capacity of the water heater tank plays a vital role in meeting your household demands. If you have a small family, you will need smaller equipment, but if you have a large family, you will require a bigger tank.

2. Material

The material of the tank also plays a vital role because if it’s made up of Steel, it will prevent the interior and exterior parts of the storage tanks from the outer environment. The Steel tanks, lined with glass, are considered the best equipment available in the market, which is resistant to corrosion and durable.

3. Digital Display

Make sure that whenever you purchase a water heater, it has a digital display because it will help you determine the water heater’s temperature. By analyzing this digital display, you will decide between keeping the equipment on or off.

4. The Drian Valve

The drain valve is essential to the water heater tank because it helps enhance durability by removing excess water. Please ensure that it is made of brass or plastic because it enhances its durability and does not lead to rust.

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Frequently Asked Questions

Conclusion

In this article, we have discussed the 40-gallon gas heater, which is considered one of the best options for getting hot water during the peak winter season. We discussed some of the most affordable and highly rated 40-gallon gas water heaters in the market, with their advantages and disadvantages.

Before reaching the end of this article, we hope that you have already concluded your decision to buy a 40-gallon gas water. Make sure you have gone through our buying guide, which will help you make a better choice.