Best tankless water heaters

? Introduction

Welcome to our comprehensive tankless water heaters buying guide. Are you tired of running out of hot water in the middle of your shower? Look no further! With tankless water heaters, you can say goodbye to cold showers and hello to endless hot water. In this guide, we will walk you through everything you need to know about these innovative appliances, including their benefits, types, installation requirements, and top brands. Whether you’re upgrading your old water heater or simply exploring more energy-efficient options, our expert advice will help you make an informed decision. Let’s dive in!

? Our Top 5

SaleNo. 1
EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
  • Endless On-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature.Amperage Draw : 54 A.Special Features: ‎Energy Efficient
  • Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 11.5 x 8 x 3.75 inches
  • Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that maintains water temperature even when not being used.
  • EcoSmart ECO 11 Sizing; 13-kilowatt tankless electric water heater ideal for providing hot water for a bathroom, small sink, office breakroom and other point-of-use or low-flow applications; provides between 1.3 and 3.1 gallons-per-minute depending on the inlet water temperature; refer to the sizing guide to select the proper solution
No. 2
EcoSmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology , 17 x 14 x 3.5, White
  • The product is highly durable
  • The product is easy to use
  • Manufactured in China
  • Amperage (amps): 75. Activation flow: 0. 3 GPM. Flow Rate @ 35 F Rise (gallons/min): 3. 51 gal (US)/min
  • The product works and is compatible with 2 X 40 AMP (DP) breakers and 2 X 8 AWG wire
No. 3
Rheem RRTGH95DVLN3701177 Rheem RTGH Series 9.5 GPM 199,900 BTU 120 Volt Residential Indoor Natural Gas Tankless Water Heater Stainless Steel
  • Flow rate of 0.4 - 9.5 GPM
  • Available temperature settings range from 100 to 140F (default setting of 120F)
  • Includes electric ignition
  • Covered under 1 year labor, 15 year heat exchanger, and 5 year parts manufacturer warranties
  • Width 17-11/16-in
No. 4
Tankless Water Heater Electric 6.5kw 240V, ECOTOUCH Point-of-Use Hot Water Heater Digital Display,Electric Instant Hot Water Heater with Self-modulating,Overheating Protection,Black
  • 【Electric Water Heater on Demand】Applied with 6.5kW heating system, the instant water heater electric ECO65 supplies instant, sufficient and endless hot water of 110℉ or higher temp in seconds, no waiting for preheating nor terrible temp fluctuation, perfect companion for sink faucet. Time to get rid of those 110V "lukewarm" toys.
  • 【Smart Self Modulation】The tankless water heater electric ECO65 adjusts power input based on flow rate and temp setting in real time. For example, less power will be applied by the smart instant hot water heater when water flow is reduced, thus, you get still ideal temperature instead of scalding hot, comfortable experience for sure. Optimal energy efficiency of 98% saves considerable electric charge.
  • 【Simple Tankless Water Heater】The electric tankless water heater ECO65 comes with digital display & touch control panel so temp setting is easy job, you needn’t go through hard lesson of getting full understanding of working status of the 240v water heater tankless. Now turn on the faucet and let the smart tankless hot water heater do the rest.
  • 【Safe and Durable Water Heater】Newly updated with protection devices, every piece tankless water heater electric ECO65 goes through strict tests to ensure 100% safety. Inner water and electricity lines are specially designed to run separated so as to avoid leakage risk or scale build up. The on demand hot water heater ECO65 qualifies for ETL standard, you can expect outstanding performance for years to come.
  • 【Point of Use Water Heater】The sleek tankless water heater electric ECO65 is compact as an oatmeal box, making it possible to install any place as point of use water heater to avoid energy and water waste, ideal for kitchen sink, bar, school, hospital, community and hair salon. Please verify it is the right size for you: 6.5kW@240V(ONLY); dimensions 10.3" (W) x 15.4" (H) x 2" (D); plumbing connections :1/2" NPT.
SaleNo. 5
Rinnai RU199iN Condensing Tankless Hot Water Heater, 11 GPM, Natural Gas, Indoor Installation
  • Endless Hot Water: Our tankless hot water heaters offer unlimited whole-home hot water flow and come equipped with Circ-Logic for pairing with an external pump to reduce wait time for hot water via scheduled or on-demand recirculation
  • Energy and Space Efficient: The tankless design of this small hot water heater saves on space and conserves energy as it heats only when necessary
  • Optimal Water Pressure: With a hot water flow rate of up to 11 GPM, this tankless water heater provides a powerful, constant stream that can accommodate up to 7 appliances at once
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your water heater; We do not recommend installing a water heater without a technician
  • Guaranteed to Last: 15-, 5-, and 1-year residential for heat exchanger, labor, and parts, respectively; Wifi monitoring available with Controlr module (not included)

? How to choose?

1. Energy Efficiency

When choosing a tankless water heater, one of the most important factors to consider is its energy efficiency. A highly efficient unit can significantly reduce your energy consumption and save you money in the long run. Look for models that have a high Energy Factor (EF) rating, as this indicates their efficiency in converting energy into hot water. Additionally, consider whether the unit has advanced features such as modulating burners or energy-saving modes. These features can further optimize the heater’s performance and minimize wasted energy.

2. Flow Rate

The flow rate of a tankless water heater refers to the amount of hot water it can produce per minute. It is essential to choose a unit with a flow rate that matches your household’s hot water demand. A larger household with multiple bathrooms and appliances may require a higher flow rate to ensure an adequate supply of hot water. On the other hand, a smaller household with fewer occupants may be satisfied with a lower flow rate. Consider your specific needs and usage patterns to determine the appropriate flow rate for your tankless water heater.

3. Size and Installation

The size of a tankless water heater is another crucial factor to consider. These units are typically smaller than traditional storage tanks, making them ideal for homes with limited space. However, it is essential to ensure that the unit you choose can be easily installed in your desired location. Consider the dimensions and weight of the unit, as well as any additional ventilation requirements. Additionally, think about whether you want a unit that can be mounted on a wall or one that is freestanding.

4. Fuel Type

Tankless water heaters can be powered by various fuel sources, including electricity, natural gas, and propane. Each fuel type has its advantages and disadvantages, so it is important to consider which one is the most suitable for your home. Electric tankless water heaters are generally more affordable and easier to install, but they may have higher operating costs. On the other hand, gas-powered units tend to have higher upfront costs but can provide substantial energy savings in the long term. Consider your budget, local utility rates, and availability of fuel sources when selecting the appropriate fuel type.

5. Warranty and Reliability

Lastly, it is crucial to consider the warranty and reliability of the tankless water heater you choose. Look for models that come with a substantial warranty period, as this can provide peace of mind and protect your investment. Additionally, research the brand’s reputation for reliability and customer support. Reading customer reviews and seeking recommendations from trusted sources can give you valuable insights into the performance and durability of different tankless water heater models.

Remember, when choosing a tankless water heater, prioritize energy efficiency, consider the appropriate flow rate, ensure suitable size and installation options, select the right fuel type, and prioritize warranty and reliability. By considering these factors, you can make an informed decision and find a tankless water heater that meets your needs and provides long-lasting hot water comfort.

? What to Look for in a tankless water heaters?

1. Energy Efficiency

One of the most important factors to consider when purchasing a tankless water heater is its energy efficiency. Unlike traditional water heaters that constantly heat and store water, tankless water heaters only heat water as it is needed, resulting in significant energy savings. Look for a tankless water heater with a high Energy Factor (EF) rating, as this indicates higher efficiency. According to the U.S. Department of Energy, “a higher EF means a more efficient water heater.”

For example, the Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater boasts an impressive 0.96 EF rating, making it highly energy efficient. With its innovative technology, it ensures that you only use energy when hot water is needed, saving you money on your utility bills in the long run.

2. Flow Rate

Another important consideration when selecting a tankless water heater is its flow rate, which determines the amount of hot water the unit can produce per minute. The flow rate is measured in gallons per minute (GPM). It is crucial to choose a tankless water heater with a flow rate that meets your household’s hot water demands.

For instance, if you have a large family with multiple bathrooms and appliances that require hot water simultaneously, you will need a tankless water heater with a higher flow rate. On the other hand, if you live alone or have a smaller household, a lower flow rate may be sufficient.

3. Size and Installation

The size and installation requirements of a tankless water heater are also important factors to consider. Tankless water heaters are generally more compact than traditional water heaters, making them ideal for homes with limited space.

Furthermore, they can be installed in various locations, such as on the wall or under the sink, providing flexibility and convenience. However, it is essential to ensure that you have the necessary space and infrastructure to accommodate the tankless water heater you choose.

When considering size and installation, it is also worth noting that electric tankless water heaters may require additional electrical work, while gas tankless water heaters may require venting. Consulting with a professional plumber or contractor can help determine the feasibility of installation in your specific home.

In conclusion, when looking for a tankless water heater, prioritize energy efficiency, flow rate, and size and installation. By considering these factors, you can select a tankless water heater that meets your household’s hot water needs while saving energy and money in the long run.

? How we picked?

1. Energy Efficiency: The Key Factor to Consider

When it comes to picking a tankless water heater, one of the most important factors to consider is energy efficiency. This not only helps to reduce your carbon footprint but also saves you money on your utility bills. A tankless water heater is designed to heat water on demand, which means it only operates when hot water is needed. This is in contrast to traditional water heaters that constantly heat and store water, resulting in energy wastage.

According to the U.S. Department of Energy, “For homes that use 41 gallons or less of hot water daily, demand water heaters can be 24%–34% more energy efficient than conventional storage tank water heaters.” This statistic clearly highlights the potential energy savings that can be achieved by opting for a tankless water heater.

2. Flow Rate: Ensuring Sufficient Water Supply

Another crucial factor to consider when selecting a tankless water heater is the flow rate. The flow rate refers to the amount of hot water the heater can produce per minute. It is essential to choose a unit that can meet the hot water demands of your household.

To determine the appropriate flow rate, you need to consider the number of fixtures or appliances that may be using hot water simultaneously. For example, a shower typically requires a flow rate of 2-2.5 gallons per minute, while a dishwasher may require around 1.5-3 gallons per minute. By calculating the total flow rate required, you can select a tankless water heater that meets your household’s needs.

3. Size and Installation: Finding the Right Fit

The size and installation of a tankless water heater are also important considerations. These units are typically smaller than traditional water heaters, making them ideal for homes with limited space. Additionally, they can be installed in various locations, such as closets, attics, or even outside.

However, it is crucial to ensure that the chosen unit can handle the hot water demands of your household. If you have a larger home with multiple bathrooms and appliances, you may need to consider a larger unit or even multiple units to ensure an uninterrupted supply of hot water.

In summary, when picking a tankless water heater, it is essential to prioritize energy efficiency, determine the appropriate flow rate, and consider the size and installation requirements. By taking these factors into account, you can find the perfect tankless water heater that meets your household’s hot water demands while also saving energy and money in the long run.

? Frequently asked questions about tankless water heaters

1. How do tankless water heaters work?

Tankless water heaters, also known as on-demand or instantaneous water heaters, work by heating water directly as it flows through the unit. Unlike traditional water heaters that store and continuously heat a large amount of water, tankless heaters heat water only when it is needed. When a hot water tap is turned on, cold water enters the unit and is quickly heated by a powerful heating element. This allows for a constant supply of hot water, without the need for a storage tank.

2. What are the benefits of using a tankless water heater?

Using a tankless water heater offers several benefits. First and foremost, **energy efficiency** is a major advantage. Since tankless heaters only heat water when it is needed, they eliminate the standby energy losses associated with traditional storage tank heaters. This can result in significant energy savings and lower utility bills. Additionally, tankless heaters are compact in size and can be installed in smaller spaces, freeing up valuable storage space. They also have a longer lifespan compared to traditional heaters. According to Energy.gov, tankless water heaters can last up to 20 years, while storage tank heaters typically last around 10-15 years.

3. Are there any limitations to using a tankless water heater?

While tankless water heaters offer numerous benefits, it is important to consider their limitations. One potential limitation is their **flow rate**. Since tankless heaters heat water as it flows, they may have a limited capacity to provide hot water simultaneously to multiple outlets. It is important to choose a tankless water heater with an appropriate flow rate for your household’s needs. Additionally, the initial cost of a tankless water heater is typically higher than that of a traditional storage tank heater. However, the long-term energy savings and extended lifespan can offset this initial investment.

4. Can a tankless water heater be installed in any home?

Tankless water heaters can be installed in most homes, but it is important to consider a few factors. First, the **electric or gas supply** in your home should be compatible with the type of tankless heater you choose. Secondly, the **water demand** of your household should be taken into account. Larger households with higher hot water demands may require multiple tankless units or a larger capacity unit. Lastly, the **ventilation** requirements of the tankless water heater should be considered. Proper ventilation is crucial for safe operation.

5. How do I choose the right tankless water heater for my home?

Choosing the right tankless water heater depends on several factors. Consider the **size** of your household and its hot water demands. Determine the appropriate flow rate and capacity needed to meet your household’s needs. Additionally, consider the **energy efficiency** and **longevity** of the unit. Look for ENERGY STAR certified models, as they meet strict efficiency guidelines. Reading customer reviews and seeking professional advice can also help you make an informed decision. Remember, selecting the right tankless water heater can provide long-term energy savings and reliable hot water for years to come.

Last update on 2024-04-25 / Affiliate links / Images from Amazon Product Advertising API

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