5 Cheap 40 Gallon Gas Water Heaters (Tested and Reviewed)

Last updated on February 14th, 2024 at 06:28 am

Are you in the market for a new water heater? If so, you may be wondering if you should buy a gas or electric model. Gas water heaters are a bit more expensive to buy upfront, but they can save you money in the long run. Here are 5 cheap 40 gallon gas water heaters that will help you stay within your budget.

40 Gallon Gas Water Heater Reviews

1. Generic Gas Water Heater 40 Gallon

cheap 40 gallon gas water heater

Looking for a reliable, durable water heater that will provide consistent hot water for years to come? Look no further than the Rheem Professional Classic 40 Gallon Gas Water Heater. This unit features a 6-year manufacturer’s warranty, meaning you can rest assured knowing that your investment is protected.

With a 40 gallon capacity, this unit is perfect for families who need plenty of hot water on demand. And with overheating protection, you’ll never have to worry about your family’s safety. So why wait? Get the Rheem Professional Classic 40 Gallon Gas Water Heater today!

Why We Picked It?

  • Get a reliable water heater that’s built to last.
  • Overheat protection keeps your family safe.
  • Feel confident knowing your family is safe and warm.
  • Know you’re making a sound investment that will save you money in the long run.

2. Bradford White 40 Gallon Natural Gas Water Heater

cheap 40 gallon gas water heater

Looking for a top-quality, durable and eco-friendly water heater? Look no further than the Bradford White 40 Gallon Natural Gas Water Heater. This unit is powered by wind power, making it a great choice for those who want to reduce their reliance on fossil fuels.

It also features Bradford White’s ICON System, which provides advanced screening and flame arrestor design. The resettable thermal switch ensures that the unit is always operating at peak efficiency, while the factory-installed Hydrojet Total Performance System ensures that your water is always clean and sparkling.

Why We Picked It?

  • Reliable and efficient
  • Saves you money in the long run
  • Reduces your carbon footprint
  • Feel like you’re doing your part for the environment.
  • Know that you’re using a product made with integrity.

3. Rheem Professional Natural Gas Water Heater – 40 Gallon 53.25″ SHORT

cheap 40 gallon gas water heater

If you’re looking for a reliable and durable water heater that will provide you with plenty of hot water for years to come, then look no further than the Rheem Professional Classic. This 40 gallon gas water heater is built to last, with a 6 year warranty to back it up. It also comes with a pressure relief valve and brass drain valve, so you can be sure that your hot water will always be safe and easy to use.

Why We Picked It?

  • Get a water heater that’s built to last.
  • Comes with pressure relief valve and brass drain valve.
  • Feel confident you’re making a sound investment.
  • Know your family will always have hot water, even during the coldest months.

4. Reliance 6-40-NOCT 400 35500 BTU

cheap 40 gallon gas water heater

Looking for a natural gas water heater that can provide you with plenty of hot water? Check out the Reliance 6-40-NOCT! This 40 gallon water heater has a recovery rate of 36 gallons per hour, making it perfect for households with high hot water demand. With an impressive 62 energy factor, this unit is also one of the most efficient models on the market.

Additionally, it features a draft diverter which allows for safe and easy venting and comes with an adapter for 4″ vent options. Plus, it has a glass-lined tank and stainless steel flame arrestor for added durability. For peace of mind, it also comes with a 6-year tank & parts warranty.

Why We Picked It?

  • This water heater is extremely efficient, saving you money on your energy bills.
  • It’s also extremely durable, lasting up to six years.
  • You’ll be helping the environment by using this water heater, which meets the new naeca 2015 efficiency standards.

5. Reliance 6 75 XRRS

cheap 40 gallon gas water heater

Looking for a top-of-the-line natural gas water heater? Check out the Reliance 6 75 XRRS. With a 75-gallon capacity, this unit is perfect for larger homes and families. It features a 606 series with 75,100 BTUs, 4″ vent size, 1″ foam insulation (8.00 R-value), and pex dip tube. The Reliance 6 75 XRRS is also AHRAE 90A-1980 approved and rated up to 7700′.

Plus, it comes with a factory-installed T&P valve and meets flammable vapor and NAECA codes. BOCA approved. Not to mention, the pilot assembly has a (TCO) thermo cut-off device. As if all that weren’t enough, the Reliance 6 75 XRRS also has a glass-lined tank.

Unit dimensions are 61″ H x 26-1/2″ D. Height is measured to the top of the draft hood. And there’s even a 6-year tank and parts warranty. So if you’re looking for a top-of-the-line natural gas water heater, the Reliance 6 75 XRRS is a perfect choice.

Why We Picked It?

  • This water heater is extremely efficient, saving you money on your energy bills.
  • It’s also extremely durable, lasting up to six years.
  • You’ll be helping the environment by using this water heater, which meets the new naeca 2015 efficiency standards.

How to Choose a Gas Water Heater?


When it comes time to replace your water heater, there are a lot of factors to consider. One of the most important is what type of water heater you want. Gas water heaters are a popular choice because they’re efficient and reliable. But how do you know which one is right for you? Keep reading for tips on how to choose a gas water heater.

Size – how big of a water heater do you need based on your household size and needs

There are a few factors that you need to take into account when determining the size of the water heater that you need for your household. The first is the number of people in your household. The more people, the more hot water you will need. The next thing to consider is how often you use hot water and for what purposes.

If you have a large family and everyone takes showers in the morning, you will need a larger water heater than if it’s just you and you only use hot water occasionally. Finally, you need to think about the climate. If you live in a cold climate, your water heater will need to work harder to heat the water, so you will need a larger size.

These are just a few things to keep in mind when choosing a size for your water heater. The important thing is to choose one that is big enough to meet your needs but not so big that it is wasteful.

Energy Efficiency – look for a water heater with a high energy efficiency rating to save money on your monthly power bills

If you’re looking for ways to save money on your monthly power bills, one of the best things you can do is invest in a water heater with a high energy efficiency rating. Water heaters account for a significant amount of energy use in most homes, so switching to a more efficient model can lead to significant savings. There are a few different things to look for when shopping for an energy-efficient water heater.

First, check the EnergyGuide label to get an estimate of the unit’s annual energy consumption. Second, look for units that are certified by Energy Star, which indicates that they meet strict energy efficiency standards. Finally, be sure to compare different models and prices to find the best deal. By taking these steps, you can be sure that you’re getting the most efficient water heater possible and saving money on your power bills in the process.

Temperature Control – make sure the water heater has temperature control so you can set it to the desired temperature

No one likes a cold shower, but a scalding one is just as unpleasant. Fortunately, most modern water heaters come equipped with temperature control, so you can set it to the perfect balance between hot and cold. Simply twist the dial to the desired setting and enjoy a comfortable shower.

If your water heater doesn’t have temperature control, it’s worth considering an upgrade. Not only will it provide a more enjoyable showering experience, but it can also help to save energy and lower your utility bills.

Warranty – most water heaters come with a warranty, so be sure to check what is covered before making your purchase

When shopping for a new water heater, one important factor to consider is the warranty. Most water heaters come with some form of warranty, so it is important to check what is covered before making your purchase. In general, the length of the warranty will depend on the type of water heater and the manufacturer. Some warranties may cover the cost of repairs or replacements, while others may only cover the cost of parts.

It is also important to note that some warranties may be void if the water heater is not installed properly. As such, it is important to read the fine print carefully before making your purchase. By taking the time to understand the terms of the warranty, you can be sure that you are getting the best possible value for your money.

Price – shop around and compare prices to find the best deal on a gas water heater

When it comes to finding the best deal on a gas water heater, price is certainly an important factor to consider. However, it’s not the only factor that you should take into account. It’s also important to consider the quality of the unit and the reputation of the manufacturer.

Additionally, you’ll want to make sure that the model you select is the right size for your needs. With so many factors to consider, it’s important to do your research and shop around in order to find the best deal on a gas water heater. By taking all of these factors into account, you can be sure that you’ll be happy with your purchase for years to come.

Conclusion paragraph: All of these factors are important when choosing a gas water heater, so be sure to consider them all before making your purchase. By following the tips in this post, you can find the best gas water heater for your needs and save money on your monthly power bills.

Bottom Line

If you are in the market for a new water heater and are looking for something cheap 40 gallon gas water heater is a great option. Keep in mind that installation costs will vary depending on your home’s setup, so be sure to get an estimate from a qualified technician before making your purchase. With these five recommendations in hand, you’re sure to find the perfect gas water heater for your needs and budget!

Sarah Smith
Sarah Smith

I'm Sarah Smith, a good housekeeper, blogger writer. Love to write about housekeeping, cleaning, cooking tips and tricks as well as life hacks related article and share online.

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