5 Best 40 Gallon Water Heater- 2023 Key Features, Pros and Cons

Water heaters are of absolute need and use in today’s day and age, and are also a product that will continue to be in use until the day we require hot water with us. We know that’s going to be for long. We’ve taken a look at some 75 gallon water heaters as well, but I can also understand that can be pretty large in volume. So now with these ones, they’re relatively reasonable in terms of size and volume. We’re also going to be taking a look at both gas and wind powered 40 gallon water heater, that can have their own pros and cons that we will discover as well.

So let’s get right to it!

1) Bradford White 40 Gallon Natural Gas Water Heater #RG240T6N


If we had to get into the details of this product, we have this water heater that is wind powered, which means that it is one that is environmentally friendly, making this great for usage without having to feel much guilt. When you know that you are investing into something that won’t cause much harm to the environment, you’ll automatically feel better about even making the purchase. 

If I had to get into the specs, this has the following dimensions: 20 x 20 x 60.5 inches. Not only this, but it weighs a solid 134 pounds. Apart from this, it has a Bradford white ICON system, and also comes with advanced screen lock technology flame arrestor design. Not only this, it also comes with a resettable thermal switch – which is highly beneficial for a natural gas water heater of this form, because of the fact that once it gets a trigger, it doesn’t work as a one shot device that can be reverted back, i.e. a fuse – but instead resets itself back should the temperature trigger be surpassed. 

Additionally, this Bradford white water heater is maintenance-free, and comes with a factory installed hydrojet total performance system. Do take note that the plugs here are manufactured for US households – and so you may need an adapter to maximize its usage. 

Pros:

  • Wind powered, hence very environmentally friendly 
  • Bradford white ICON system 
  • Advanced screen lock technology 
  • Resettable thermal switch 
  • Maintenance free – one time investment 
  • Factory-installed hydrojet 

Cons:

  • US household design plugs 

2)  A.O. Smith ENS-40 ProMax Short Electric Water Heater, 40 gal


A.O. Smith ENT-40 ProMax Tall Electric Water Heater, 40 gal
  • Permaglas glass coating protects steel tank from corrosion and...

One thing about this product that is different from some of the standard water heaters we have seen before and will see today is the fact that this is a battery powered device, as opposed to being wind/ gas powered. The dimensions of this AO Smith water heater are 22 x 22 x 50 inches. Not only this, but it is made out of aluminum, stainless steel and brass. 

This battery powered water heater has a permaglas glass coating that basically gives the steel tank an anti-corrosion protective layer, which hence maximizes the lifespan of the tank and its durability. It also comes with a diffuser dip tube that helps to reduce lime and sediment buildup, whilst also optimizing the volume of hot water output – which is made from long- lasting PEX cross-linked polymer. Additionally, this 40 gallon gas water heater has a CoreGard anode rod aluminum anode that has a stainless steel core, and protects the AO Smith 40 gallon water heater against corrosion for much longer than ordinary steel anodes. It also has a very long-lasting tamper-resistant brass drain valve. Lastly, it abides by all the regulations set by the National Appliance Energy Conservation Act (NAECA).

Do take note that the plugs here are manufactured for US households – and so you may need an adapter to maximize its usage. 

Pros:

  • Battery powered – can be recharged. The best type of powering. 
  • Permaglas glass coating 
  • Anti-corrosion protective layer
  • High durability
  • Diffuser dip – reduces lime and sediment build up
  • Optimizes hot water output
  • Stainless steel core and anodes 
  • Tamper – resistant drain valve 
  • Abides by all rules of NAECA

Cons:

  • US household design plugs 

3)  A.O. Smith ENT-40 ProMax Tall Electric Water Heater, 40 gal


Sale
Bosch Thermotechnology 40-Gallon Tall Electric Storage Water Heater, Gray
42 Reviews
Bosch Thermotechnology 40-Gallon Tall Electric Storage Water Heater, Gray
  • APPLICATION: Dimensions : 18.25" W x 61.60" H x 18.25" L. Perfect...

The power source of this particular electric water heater is Corded electric, and with this being electric, it yet again is very different from the other 40 gallon water heaters present in the market and from the ones we are exploring today. The dimensions of this product are 20 x 20 x 60.25 inches, and comes in the materials aluminium, stainless steel, brass and copper. 

All the characteristics of this particular AO Smith water heater are the same as the previous one, only that this one is longer in height, as compared to the previous one. 

Pros:

  • Battery powered – can be recharged. The best type of powering. 
  • Permaglas glass coating 
  • Anti-corrosion protective layer
  • High durability
  • Diffuser dip – reduces lime and sediment build up
  • Optimizes hot water output
  • Stainless steel core and anodes 
  • Tamper – resistant drain valve 
  • Abides by all rules of NAECA

Cons:

  • US household design plugs 

4)  Reliance 6-40-NOCT 400 35500 BTU Tall Natural Gas Water Heater, 40 gallon


This water heater is wind powered, which is environmentally friendly, making this a good option for you as well. The dimensions of this particular 40 gallon gas water heater are 1 x 21.13 x 61.81 inches, and is made up of stainless steel and aluminium, and weighs 150 pounds. Moving on, when we talk about the details of this particular hot water heater, it has PEX polymer lined heat trap nipples that help to preserve and keep the heat within the body of this 40 gallon natural gas water heater. It also has aluminium anode rods which help in the process of naturally heating up the water – for those who studied chemistry, you’d know!

Lastly, it yet again has plugs that are designed to be for US households. 

Pros:

  • Stainless steel and aluminum – good conductors and help with water heating 
  • Natural gas, thus environmentally friendly 
  • Aluminium anode rods – good conductors again 
  • PEX polymer heat trap nipples

Cons:

  • US household designed plugs – hence you will need an adapter 

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


Rheem 72-40-2 240V / 4500W 40 Gallon Electric Water Heater
1 Reviews

This last electric water heater that we are seeing today comes in the following dimensions of 18.25 x 18.25 x 61.6 inches. It also is made out of plastic as its predominant material, which is what is different from the other 40 gallon water heaters we saw, that were made of aluminum or stainless steel – which end up as being better materials. Moving on towards the details of this particular water heater, it has two magnesium anode rods that give extra tank protection, and also act as and provide a dielectric heat trap – this eventually ends up working in the favor of the purpose of this water heater as it is meant to heat up water. Not only this, but there also is a glass-lined steel tank to help prevent corrosion. 

It comes with a 10 year warranty for parts and the whole. It also has an HFO foam insulator, which reduces fuel costs and increases energy efficiency. It also has double heating elements that conserve energy. Lastly, it has factory-installed electric hot and cold water connections for an extended tank life, which is what you need – because you don’t want to be investing and reinvesting after one large purchase. The factory installed heat traps reduce heat loss, which means that it is effective at conserving heat within the tank and having that to then provide hot water. What’s great is that a temperature and pressure relief valve is included. 

Pros:

  • Magnesium anode rods – extra protection for the tank 
  • Glass-lined steel tank; prevents corrosion 
  • 10 year warranty for parts and whole 
  • HFO foam insulator 
  • Reduced fuel costs 
  • Increased energy efficiency 
  • Double heating elements 
  • Factory-installed electric hot and cold water connections 
  • Factory-installed heat traps 
  • Temperature and pressure relief valves present 

Cons:

  • Made out of plastic 
  • US household plugs 

6. Opinion:

So, to sum up, I think I’d any-day recommend the second 40 gallon water heater for its numerous good traits and qualities, making it apt for the purpose we need it for, which makes this a good option for a water heater. What we see additionally is that many of these gas heaters are made out of good conductors and materials, and also have anode rods that help to more naturally conduct electricity in the water and thus heat it up well. These are all signs of the traits one needs inside a water heater of this type and purpose. We are eager to hear from you and know which one you went with! Do let us know below in the comments – and drop down a review! We hope that this article helps you in drawing a comparison and making the right choice! What we can assure you with is that these are all water heaters of high quality and standards, and they won’t disappoint. They are all given great reviews and rates which all the more adds onto how reliable these are and can surely count on! 

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