Stiebel Eltron vs Rheem

Are you hesitating on which water heater you should spend your money on? What is a better option – Stiebel Eltron vs Rheem?

Water heaters without tanks are made to deliver hot water “on demand” without the restrictions associated with storage water heaters. Therefore, a tankless water system might be a sensible investment if you want to save up to 50% on your water heating costs.

Tankless water heaters have gained appeal in recent years over more conventional storage water heaters because of their capacity and efficiency for conserving energy. [1]

The tankless water heaters have been widely used in Europe and other areas of the world for many years. Therefore, increased interest in this technology in North America has undoubtedly resulted in an abundance of tankless water heating solutions [2].

Stiebel Eltron vs Rheem



Since there are numerous items on the market, it is getting more and harder for the typical consumer to decide which system best meets their requirements while still being produced by a company that appropriately develops and engineers them.

Therefore, we contrast Stiebel Eltron vs. Rheem water heaters to assist you in finding your way through the recently oversaturated tankless water heater industry.

Stiebel Eltron 

Stiebel water heaters are built for performance thanks to stylish aesthetics and excellent German engineering. You can be sure that the company stands behind its product because it gives a strong guarantee that protects against leaks for seven years and against workmanship and material faults for three years.

Furthermore, because of Stiebel Eltron’s unique Advanced Flow Control, the hot water will always retain the desired temperature even when demand exceeds system capacity [3].

With solid copper heating chambers and intelligent self-modulating technology, the Tempra Plus always uses the least energy possible. The largest electric tankless water heater offered by Stiebel Eltron is the Tempra 36 Plus. It can serve 3 to 4 bathrooms in warm areas, while in cooler climates, it can serve 2 to 3 [4].

However, they offer several lesser systems if you don’t require as much hot water.

Stiebel Eltron Tankless Water Heater Features

  • Energy Efficient: The Stiebel Eltron Tempra Plus 24 kW Tankless Electric Water Heater is a model that uses less energy. Unlike traditional tank-type devices, which run continuously, this heater only activates when hot water is required. Consequently, you save a significant amount on your monthly electricity expenses.
  • Advanced Control of flow: This feature is useful if you want to use this model to run a variety of fixtures simultaneously. This heater uses microprocessor technology to ensure that the temperature of all the water that goes out is constant.

This device will continue to deliver hot water at a constant temperature even if there is considerable fluctuation in the incoming flow. This guarantees that wherever you use it, you will have a pleasant shower or hot water experience. In essence, the flow control will moderate and stop any unfavorable temperature swings from happening while you are utilizing your hot water.

  • Digital Control of Temperature: The Stiebel Eltron tankless water heater has a digital thermostat that allows you to customize the temperature. With the help of the computerized Control, you can raise the temperature from 86 to 140 degrees Fahrenheit. Simply turn the knob to the correct number to choose your ideal temperature. The temperature will appear on the digital display once it is set to the desired setting.
  • Flow Rate: The Tempra Plus model has a maximum constant flow rate of 4 gallons per minute. This product is thought to achieve a medium-rated GPM flow rate compared to other tankless water heaters. In addition, it can run numerous lights simultaneously while maintaining a consistent temperature. Due to this, it stands out as the greatest product in its category.
  • Simple Installation: There is no need for venting when mounting the Stiebel Eltron Tempra Plus. This unit has a modern design and may be used for residential and commercial uses when a strong steel casing protects it.
  • Warranty: The purchase of the electric Stiebel Eltron water heater includes a 3-year limited warranty. This has considerably greater security when compared to the vast majority of other tankless water heaters. Additionally, given that this product is from a well-known German brand, you may be confident in its high quality.

Rheem Water Heaters

Regarding water heaters, Rheem is a world authority. The company has been operating for a while, and throughout that time, they have developed a reputation as a high-end player. They produce large-capacity tankless hot water systems and back up their products with a reliable 5-year heat exchanger / 1-year components limited warranty.

Rheem offers cost-effective, high-quality water heaters that are energy-efficient. They provide the best in class for dependable and long-lasting hot water solutions, making them particularly well suited for residential use. Gas, tankless, electric, and more options are available. [5]

There are a variety of models available to suit any requirement or budget. The 80-gallon hybridized water heater, an Energy Star high-efficiency “smart tank,” is a top-tier Rheem water heater for domestic usage. It is appropriate for large families living in homes that require constant hot water. A top-of-the-line Rheem water heater costs about $2,200.

Rheem continues to sell high-quality water heaters at affordable prices. For smaller homes and apartments, a Rheem 40-gallon performance water heater, for instance, offers enough hot water.

In addition, the pricing is reasonable in light of the product’s high quality and reputable brand. An entry-level Rheem water heater costs about $380.

How reliable are Rheem water heaters?

rheem water heater

Even though several factors should be considered when purchasing a water heater, one of the most important is reliability. Water heaters made by Rheem are renowned for their dependability and performance. They hold up under scrutiny when put up against efficient units.

As with any online review, you are more likely to see a negative than a positive one. If a customer has a nasty experience, they are more likely to submit a review. You can get a better top-down understanding of what to anticipate by looking at all of the reviews.

The producer with a base in Germany named Stiebel claims to have the best product available. We contrasted the Stiebel Eltron Tempra 24 Plus and the Rheem Performance 27 kW.

The Stiebel Eltron Tempra is made of corrosion-resistant materials like the Rheem. Therefore, it is a superior choice to EcoSmart.

Disadvantages of tankless gas water heaters

  • They’re hazardous – Gas water heaters emit nitrogen dioxide and carbon monoxide (CO) (NO2). Numerous people die from CO poisoning every year, and thousands are hospitalized. According to health experts, children living in homes with gas appliances have a 40% increased risk of asthma [9].
  • Gas prices are erratic and probably will increase — Natural price fluctuations might reach 100% in a year. Most analysts also anticipate price increases over the ensuing few decades. On the other side, electricity is probably going to get cheaper.
  • Unhealthy for the environment – Natural gas contributes to climate change by releasing CO2 and methane. In addition, NO2 emissions from gas appliances contribute to indoor and outdoor air pollution and poorer health. Therefore, a heat pump water heater, considered the most energy-efficient water heater currently available, is a much better choice for most homeowners.

Related: Stiebel Eltron vs Ariston


Stiebel Eltron and Rheem Tankless Water Heaters are excellent choices if you’re looking for an electric water heater for high-demand domestic use. These heaters, which come from a reputable company, can obediently provide your hot water needs. Furthermore, you can be sure that you have the manufacturer’s support and will use the appliance for many years because warranties cover them.

Read Next: Stiebel Eltron vs Ecosmart