3 Rheem 40 Gallon Gas Water Heater Review on the Market

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When it comes to water heaters, this article has taken a deep dive into the in’s and out’s of the purchasing process through the best Rheem 40 gallon gas water heater review. It has provided education to the consumer regarding factors to look for. Those who are in the market for a Rheem should find this a gold mine of information. Ultimately, when we think of hot water, we envision hot showers and cleaning our clothes properly. We realize that it is a modern convenience of life. You would not be able to live in a place for very long that doesn’t have hot water. Just washing your hands would be a chore with freezing cold water comes out of the tap.

What Is the Best Rheem 40 Gallon Gas Water Heater on the Market?

Rheem has an interesting and diverse history. They are a brand with a century-long legacy. The team started with just two ambitious brothers and signifies the American Dream. It is the epitome of what working hard in this country will do for you. You know that you will be backed by a company that values people and treasures families.

Quick Pick on the 3 Best Rheem 40 Gallon Gas Water Heaters

Photo Title Price Buy
Rheem RTGH-84DVLN Indoor...image Rheem RTGH-84DVLN Indoor Direct Vent Natural Gas Condensing Tankless Water Heater Low Nox Check Latest Price
Rheem G100-200, 100...image Rheem G100-200, 100 Gallon, Gray $5,385.00 Check Latest Price

Whether you go with a tankless or tank water heater, you will still be able to find one that is Energy Star. It is important in this day and age where people are so concerned with global warming. The selection that Rheem has to offer is impressive and soon you will settle on one that you love. We chose the best three in the small tank, large tank, and tankless water heater in our opinion. Now the rest is up to you when selecting the one that you will purchase for your own home.

Top 3 Best Rheem 40 Gallon Gas Water Heater Review

1. Rheem RTGH-84DVLN Indoor Direct Vent Natural Gas Condensing Tankless Water Heater Low Nox

rheem water heater 40 gallon price

This tankless water heater has a built-in electric blower. It also has a 120-volt power cord. It offers protection from freezing for up to minus 30 degrees. The best part about this heater is that it is remote control activated. You can save yourself space and be energy efficient all at the same time.

The item weighs 77.9 pounds, so it is heavier when it comes to installation. It is Energy Star certified. While the heat is provided by gas, the unit will still require electricity. You can buy a UPS backup and plug it into the water heater instead. The unit will max out at 140 degrees. It will produce 9 gallons per minute. Most people are relatively pleased with the unit and it has a 4 out of 5-star rating on Amazon in terms of customer satisfaction. Since this is a third party site, this rating is still very high.

2. Rheem G100-200 Natural Gas Universal Commercial Water Heater, 100 Gallon

rheem 40 gallon gas water heater

This unit runs on 199,900 BTU. It is the universal tank design so it should fit into most home boiler rooms. It will also help to save you space even though it is quite a large unit. This is due to the elongated spherical design. It goes for around $3500 so it is quite an affordable purchase. It is designed to be easy to install in case you need to replace your heater. In total it weighs 780 pounds so it is not easy to move around at all. It is powered by natural gas. While not as popular with consumers as the tankless option above, it is still a viable choice.

3. Rheem MR50245 Marathon Tall Electric Water Heater, 50-Gallon

rheem 40 gallon water heater reviews

This 50-gallon water heater is the middle ground between a tankless and a 100 gallon one. It is cheaper than 100 gallons at around $1500. That is a substantial saving if you are willing to settle for less hot water. It only weighs 100.1 pounds, so one strong person might be able to install it. It runs on 240 volts. The warranty covers leakage, which is a definite plus. The tank is resistant to corrosion and rust. The many layers of fiberglass are what gives it its strength. The polyethylene outer layer is also strong and resists denting or scratching.

Usages of 40-Gallon Heater

When it comes to a 40-gallon heater, there are many uses. It will provide all of the water for your shower, taps, and baths in the home. A 40-gallon heater will give you two showers in one hour. If you have a fairly busy household and everyone is showering in the morning, then you might want to opt for more. However, if you have two parents and young children, then the 40-gallon will work quite fine. Additionally, it depends on how long you want your showers to be. If you just want to get in and out quickly, then you may be able to stretch out the number of showers. Also, you might be a person that prefers nightly baths to showers. This will help the tank to last longer when everyone doesn’t just need hot water all at once.

You can also use this size of tank for doing your clothing wash. It will allow 25 gallons per use, so be careful when you are purchasing laundry items. You can get a dishwasher that lasts six gallons per time. When it comes to your other taps, it will allow two gallons per minute of water running. Everyone needs hot water and so there is no question that a water heater will be essential to modern living.

rheem 40 gallon hot water heater

About the Brand Rheem

Rheem Manufacturing Company is an American corporation. Those that prefer to invest in American goods and services can be confident to know that Rheem is proudly American. They work on manufacturing water heaters and boilers, so they are quite specialized in their expertise. They also manufacture HVAC systems. It’s clear to see that Rheem provides those quintessential services and goods that people need around the globe. The company also puts out the brand name Ruud.

Rheem has an interesting history. They started out in 1925 by making packaging for petroleum companies. It has its headquarters in Atlanta, Georgia. Since starting out, Rheem has grown and diversified its products. Now it sells to countries around the world. The brand is known for being one of the biggest makers of HVAC systems as well as heaters and boilers in the US.

The company was initially founded by the Rheem brothers, hence the name. Their father owned an oil refinery which is why they probably started out with catering to the petroleum industry. Their start was on galvanized steel drums. They had another brother too that became a financial partner in their initial operations. In 1930, they bought out Pacific Galvanizing. They also acquired another steel packaging company.

By the 40s, this company was already making water heaters and had found its path. In 1956, the company showcased the Rheemaire line of air conditioners and heaters for homes. They had found a niche in making American home life comfortable and domesticated. In 1970, they made HVACs and heat pumps for homes. They then acquired a company and then got acquired by Paloma Industries. Paloma Industries in a Japanese company. This company wanted to expand its operations to a global level.

While Ruud was started by Edwin Ruud in the early 1900s, it then became acquired by Rheem in 1960. Rheem has kept the Ruud legacy alive by continuing to manufacture gas-fired water heaters under the original company name. In this way, Rheem has preserved a bit of the history of a brand.

Things to Consider in Getting a Rheem 40 Gallon Gas Water Heater

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Warranty is the first consideration to make for quality.

When it comes to getting a Rheem 40-Gallon Gas Water Heater, you may want to take certain considerations into mind. For one, you will want to look at the warranty that Rheem offers with this product. Currently, they have a six-year limited warranty. This is not a lifetime guarantee but will be enough to tell if you have purchased a lemon. Most of the time, gas water heaters will work for many years to come, but you will get it fixed for free in the first initial years if there are any manufacturing defects. By this time, the kinks should be worked out and you will just need to get regular maintenance checks as needed.

Another consideration is how many showers and baths you need.

All of the limits for a 40-gallon tank still apply to the Rheem brand. You will need to calculate who will be taking showers in a household and when. You will also have to figure in all your appliances. A lot of the newer washers have energy efficiency features. This means that they can clean clothes using less water. This feature will be important to you if you plan to get a smaller gallon tank. You can also get dishwashers that are energy efficient and can clean will less water. You will want to evaluate what your current appliances run on. Then you can calculate whether or not you need a larger tank. It’s up to you but a 40-gallon gas water heater should work for your home if you do not take many showers all at once or want to run your water-driven appliances all at the same time.

Of course, you will need a home that is fitted for a gas water heater.

You will also have to check energy compatibility. The Rheem 40 Gallon Gas Water Heater runs on 0.58 UEF. The dimensions are 19 inches depth by 58.5 inches height by 19 inches width. You need to take measurements in your home to see if this will fit in your boiler room.

Looking at the reviews will also help you to determine if this Rheem product is up to your standards.

Right now, the Rheem site has it sitting at a 4.5-star overall average rating out of 5 stars. This is a great rating considering they even include the clients who give it a 1-star rating. Most of the people that rated it low had other problems, such as their faulty gas line or they thought that the parts could be higher quality. Unfortunately these days a lot of manufacturers are cutting corners with the quality of parts. There is simply not the selection of high-quality part manufacturers that there used to be.

Are Rheem Tankless Water Heaters Good?

rheem 22v40f1 natural gas water heater 40 gallon

Rheem has a history of making good quality products. They started with steel barrels and perfected their techniques. Through their acquisitions, they gained a wealth of knowledge from other companies. More specifically, they took the revolutionary Ruud gas heater technology. Other sources list Rheem as an excellent solution for people that want more compact units that still deliver results.

Another reason people prefer Rheem is because you will save space in your boiler room. The efficiency of this brand makes it a great solution for people that are looking to maximize their water usage. You don’t always need to get a larger tank because Rheem has proven that you can survive well on a 40-gallon water heater tank.

How Long Does Rheem Tankless Water Heaters Last?

How long your Rheem Tankless Water Heaters Last will depend on a number of factors. According to the “Home Buying Checklist,” it will last for eight to twelve years. For those looking to go tankless, you can see how this can provide an important solution. Most people who buy one will hope that it will at least be a once a decade purchase. These purchases are large investments so they are something that homeowners will save up to buy.

Are Rheem Tankless Water Heaters Energy Star?

Energy Star is the official government backing and certification proving that your product is energy efficient. This Energy Star rating has come about to help combat climate change. Rheem offers 152 of these Energy Star Tankless Water Heaters. They also claim that you can save 15% to 40% on your utility bill with one of these products.

Final Pick: The 3 Best Rheen 40 Gallon Gas Water Heaters Review


David: Penn State-educated Mechanical Engineer and Business-savvy Fluid Dynamics Specialist. Balances family plumbing business support with a thriving engineering career at a top, undisclosed company. (they want it that way) I help Will with plumbing and HVAC needs on his Real Estate.

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