Tankless water heaters are gaining popularity for their energy efficiency and ability to provide hot water on demand. Unlike traditional tanks that store hot water, tankless models heat water as it flows through the unit. This means you never run out of hot water, making them ideal for larger households or for homes where multiple hot water needs arise at once.

Choosing the right tankless water heater involves considering several important factors. First, buyers should look at the flow rate, which indicates how much hot water the heater can supply at once. Additionally, energy efficiency ratings can help in understanding long-term savings. It’s also essential to consider installation requirements and whether the unit is compatible with your current plumbing and gas lines.

With these points in mind, we explored various models to find the best options available. Our research focused on performance, efficiency, and user satisfaction to help you make an informed choice.

Best Tankless Water Heaters

We have gathered a list of the best tankless water heaters available. These options are designed to provide hot water efficiently and on demand, ensuring you can meet your needs without running out. Each product has been selected for its performance, reliability, and customer satisfaction.

EcoSmart ECO 11

We recommend the EcoSmart ECO 11 for those looking for a reliable and energy-efficient tankless water heater.

Pros

• Provides endless hot water on demand.
• Compact size saves valuable space.
• Highly energy-efficient, helping to lower energy bills.

Cons

• Limited flow rate may not support multiple outlets at once.
• Requires specific electrical wiring to function well.
• Installation may be challenging for some users.

We recently installed the EcoSmart ECO 11 in our home and were pleasantly surprised by its performance. It delivers hot water consistently without the worry of running out. We appreciated that it heats water only when needed, contributing to its energy efficiency. This feature has definitely helped us save on our utility bills.

The compact design is a huge plus. It’s much smaller than traditional water heaters, making it easy to install in tight spaces. We mounted it on the wall, which cleared up room that would otherwise be taken up by a bulky tank.

On the flip side, we discovered the flow rate can be a bit limited, especially when multiple taps are running at the same time. If you’re planning to fill a large bathtub, you might want to consider a different model or ensure it’s the only water source being used. Overall, the EcoSmart ECO 11 is a solid choice for basic hot water needs in smaller applications.

Rinnai RX199iN Tankless Water Heater

We recommend the Rinnai RX199iN for those who need a reliable and space-saving solution for hot water.

Pros

• Offers continuous hot water without running out.
• Compact design saves valuable space.
• Easy installation with flexible fuel options.

Cons

• Heats water slightly slower than some older models.
• Professional installation is highly recommended.
• Initial cost can be higher than traditional tank heaters.

Using the Rinnai RX199iN has transformed our hot water experience. It’s impressive how it produces a steady stream of hot water without the need for a bulky tank. In our smaller home, it fits perfectly, taking up about as much space as a suitcase. We appreciate having reclaimed some storage room that was previously occupied by a traditional water heater.

The technology in this unit is user-friendly. The Quick Flush function makes maintenance straightforward, which is a huge advantage. We found that the interface is clear and easy to navigate. Plus, with the option for Wi-Fi connectivity, managing settings can be done right from our smartphone.

While installation went well, we recommend hiring a professional. Although it can be a doable DIY project, having an expert ensure everything is set up correctly brings peace of mind. Overall, this tankless heater is a smart choice for anyone looking for efficiency and convenience.

Rinnai V53DeP Tankless Water Heater

This tankless water heater is a solid choice for anyone seeking reliable hot water without the bulk of a traditional tank.

Pros

• Provides endless hot water for multiple fixtures.
• Space-saving design reduces energy costs.
• High flow rate ensures strong water pressure.

Cons

• Professional installation is recommended.
• Requires wiring, which may complicate setup.
• Not compatible with all water types without maintenance.

We installed the Rinnai V53DeP and found it delivers impressive performance. The endless hot water means we can run the dishwasher and shower at the same time without worrying about running out. This unit is a game changer for busy households.

Its compact size is a huge plus. We appreciate how it doesn’t take up much space, which is perfect for our smaller utility area. Additionally, it heats water only when needed, making our energy bills lower.

On the downside, hiring a professional for installation can add to the cost. It’s also important to note that this unit needs to be wired, which could be a hurdle for DIY enthusiasts. Regular maintenance is essential due to our hard water, but the benefits far outweigh these minor inconveniences.

Rheem Tankless Water Heater

This Rheem tankless electric water heater is a solid choice for those looking to upgrade their hot water system.

Pros

• Provides endless hot water without delays.
• Compact design saves space.
• Energy-efficient, potentially reducing bills by up to 50%.

Cons

• Installation may require specific electrical upgrades.
• Performance can depend on the temperature of incoming water.
• Initial cost can be higher than traditional heaters.

We recently tried the Rheem 18kW tankless water heater in our home, and it has truly changed the way we use hot water. The endless supply means we no longer run out during showers or while doing laundry. We appreciate that it heats water on demand, saving energy compared to traditional tanks that constantly heat water.

The compact size is another highlight. It fits easily in small spaces, like under a sink or in a closet. Our previous tank water heater took up so much room. Now, we have more space to use for storage. This unit’s sleek design makes it look modern and unobtrusive.

We did notice that installation might be a bit tricky if your home needs updated wiring. It’s important to check if the unit works with your current setup. Additionally, the temperature of your incoming water can affect how hot the water gets. Overall, we think this Rheem model is efficient and reliable, making it a great investment for anyone needing a dependable hot water solution.

EcoSmart ECO 27

We highly recommend the EcoSmart ECO 27 for those looking for efficient and reliable hot water solutions.

Pros

• Provides endless hot water on demand.
• Compact design saves valuable space.
• Very energy efficient, reducing utility bills.

Cons

• Requires proper electrical setup and installation.
• Might not suit all household sizes based on water needs.
• Initial setup can be challenging if you’re not familiar with electrical work.

After using the EcoSmart ECO 27, we found its performance quite impressive. It delivers hot water quickly and consistently, even when multiple taps are in use. The self-modulating technology ensures that we get the right amount of energy for heating, which helps in keeping energy costs down.

Installation can be tricky if you’re not familiar with electrical systems. We needed to ensure our home had the right electrical capacity for this unit. Once set up, we appreciated how it maintained the selected temperature within one degree.

The compact size was a great advantage for us. We saved a lot of space in the utility area compared to the bulky traditional tank heaters. Overall, the EcoSmart ECO 27 is certainly a smart choice for modern homes looking for efficient hot water solutions.

Rheem RTEX-24 Tankless Water Heater

We recommend the Rheem RTEX-24 for its efficient and consistent hot water delivery.

Pros

• Compact design saves space.
• Provides endless hot water.
• Energy-efficient operation.

Cons

• May struggle with keeping up in very cold climates.
• Installation may require professional help.
• Initial cost can be higher than traditional heaters.

After using the Rheem RTEX-24, we found it to be a great choice for our home. The compact size is a standout feature; it easily fits in small spaces, like under the sink. There’s no need for bulky tanks taking up valuable room.

We really appreciate the endless supply of hot water. Whether we are showering or running the dishwasher, we never run out. This is especially handy during busy mornings when everyone is getting ready at once.

One thing to note is that, in colder weather, the unit may struggle to keep up if too many outlets are used at once. While most users should find it adequate, those in very cold areas might want to weigh their options.

In summary, the Rheem RTEX-24 is a solid investment for anyone looking to upgrade their water heating system, especially if space and energy savings are priorities.

Stiebel Eltron Tempra 24 Plus

We recommend the Stiebel Eltron Tempra 24 Plus for anyone seeking reliable, energy-efficient hot water on demand.

Pros

• Provides continuous hot water without interruptions.
• Compact design saves space and is easy to install.
• Uses up to 20% less energy compared to traditional tanks.

Cons

• Requires specialized electrical installation.
• Limited hot water output can vary during high usage.
• Initial cost might be higher than traditional water heaters.

After using the Stiebel Eltron Tempra 24 Plus, we found it truly delivers on its promise of endless hot water. The Advanced Flow Control technology ensures that we don’t have to worry about the temperature dropping during a shower, even when multiple taps are running.

We appreciated its small size because it fits nicely into our laundry room, freeing up space. The LED display is user-friendly, making it simple to adjust the temperature as needed. This unit operates quietly, allowing us to enjoy hot water without any annoying noises.

While we noticed significant energy savings right away, it is important to keep in mind that the initial installation needs professional expertise. This may add to the upfront cost. Overall, the Stiebel Eltron Tempra 24 Plus is a solid choice for those wanting efficient, on-demand hot water.

Buying Guide

When we choose a tankless water heater, several features are important to keep in mind.

1. Flow Rate
This measures how much hot water the heater can provide at once. We need to know the peak demand in our home. Consider the number of showers, faucets, and appliances using hot water simultaneously.

2. Energy Efficiency
Look for the energy factor (EF) rating. A higher EF means better energy savings. This helps us save on bills and is good for the environment.

3. Size and Installation
Consider where we will install the unit. Tankless heaters come in different sizes, and we should choose one that fits our space. We also need to think about whether we want a unit for the whole house or just a specific area.

4. Fuel Source
Tankless water heaters can run on electricity or gas. We should look at what’s available in our home. Gas models often heat water faster but may need venting.

5. Warranty and Service
Check the warranty period. A longer warranty can be a sign of reliability. We also want to know about customer service options.

6. Price
Prices vary significantly. We should set a budget and look for models that meet our needs within that range.

Making the right choice involves careful consideration of these factors to ensure we find the best tankless water heater for our home.

Frequently Asked Questions

When selecting a tankless water heater, several important factors come into play. We will cover key aspects like size, energy source, and specific features. These pointers will help us make informed choices.

What factors should be considered when choosing an electric tankless water heater?

We need to look at the flow rate, which is how much hot water we need at once. The size of the unit is crucial too; it must meet our household demands. Energy efficiency ratings help us save money and energy over time.

How do tankless water heaters for large homes compare to traditional models?

Tankless systems offer instant hot water without the wait. They take up less space and can be more efficient than traditional water heaters. For larger homes, multiple units might be necessary to ensure sufficient hot water supply.

What are the energy efficiency advantages of propane tankless water heaters?

Propane tankless water heaters generally heat water faster than electric models. They often require less energy to operate, leading to lower utility bills. This makes them ideal for homes that use a lot of hot water.

Which features distinguish reliable tankless water heaters from the competition?

Good tankless water heaters have digital temperature controls for easy adjustments. They also include safety features like overheating protection. Additionally, models with a warranty provide extra peace of mind for consumers.

How do the top brands of tankless water heaters perform in terms of durability and maintenance?

Top brands usually feature high-quality materials that enhance durability. They often have easy-to-clean filters and require less frequent maintenance. Choosing a reliable brand can mean fewer repairs and longer lifespan.

Are there specific tax incentives or credits available for installing a tankless water heater?

In many areas, there are tax credits for energy-efficient home upgrades. We should check local laws and consult professionals. This can help make the cost of installation more affordable and worthwhile.