Imagine this: you’re about to step into a nice, hot shower, but instead, you’re met with a chilly surprise. Frustrating, right? For many homeowners, a lukewarm shower or running out of hot water is a common problem. It’s a hassle that can really disrupt your day. That’s why choosing the right hot water heater is so important.
But when it comes to tankless water heaters, the choices can feel overwhelming. There are so many different brands, sizes, and features to consider. How do you know which one is the best fit for your home and your family’s needs? It’s easy to get lost in all the technical details and end up feeling confused.
In this post, we’re going to break down everything you need to know about tankless hot water heaters. We’ll explain how they work, what makes them a great option, and the key things to look for when you’re ready to buy. By the time you finish reading, you’ll feel much more confident about making a smart choice that will keep your home warm and cozy.
Our Top 5 Tankless Hot Water Heaters Recommendations at a Glance
| Image | Product | Rating | Links |
|---|---|---|---|
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EcoSmart ECO 11 Electric Tankless Water Heater | 8.7/10 | Check Price |
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Tankless Water Heater Electric 110V | 9.3/10 | Check Price |
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14kW Tankless Water Heater Electric | 9.2/10 | Check Price |
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Rheem 18kW 240V Tankless Electric Water Heater | 9.5/10 | Check Price |
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18kW Tankless Water Heater Electric | 8.9/10 | Check Price |
Top 5 Tankless Hot Water Heaters Detailed Reviews
1. EcoSmart ECO 11 Electric Tankless Water Heater
Rating: 8.9/10
Tired of running out of hot water? The EcoSmart ECO 11 Electric Tankless Water Heater promises endless hot water on demand. This 13KW heater runs on 240 volts and uses smart technology to keep your water at the perfect temperature. It’s a great choice for smaller needs like a bathroom or a breakroom sink.
What We Like:
- Provides endless hot water so you never run out.
- Keeps water temperature within 1 degree of what you set.
- It’s 90% smaller than old tank heaters, saving you space.
- You can mount it on a wall or right where you need it.
- It’s 99% energy efficient because it only heats water when you need it.
- The patented self-modulating technology makes it very efficient.
- It delivers between 1.3 and 3.1 gallons of hot water per minute.
What Could Be Improved:
- It draws 54 amps, so make sure your electrical system can handle it.
- It’s best for smaller applications, not whole-house hot water needs.
- You’ll need to check the sizing guide to make sure it’s the right fit for you.
This EcoSmart heater is a smart and efficient way to get hot water when you need it. It’s a great upgrade for specific needs where space and energy savings are important.
2. Tankless Water Heater Electric 110V
Rating: 9.1/10
Say goodbye to cold water surprises! This Tankless Water Heater Electric 110V, 3000W Instant Electric Water Heater, Under Sink Water Heater with Digital Display, On Demand Hot Water heater Electric for Kitchen Bathroom Washing is your solution for quick, on-demand hot water. It’s made from tough ABS material and features a handy LED display. With its 3000W power, it heats water up fast, so you don’t have to wait. You can even set the temperature in Fahrenheit or Celsius. It’s compact and looks great, fitting easily under your sink. This heater is perfect for small tasks like washing dishes or hands, providing continuous hot water when you need it.
What We Like:
- Provides instant hot water without any preheating.
- Compact and sleek design fits well in small spaces.
- Easy to set your desired temperature in Fahrenheit or Celsius.
- Multiple safety features like leakage and dry boil protection.
- High thermal efficiency saves energy.
- Simple to install with provided screws and standard connections.
- Great for kitchens, bathrooms, RVs, and camping.
- Excellent customer service with a 30-day money-back guarantee and 24-month warranty.
What Could Be Improved:
- Not powerful enough for showers (requires at least 1.8 GPM).
- Must be installed vertically; horizontal installation is not allowed.
- Requires specific wiring (≥ 2.5 sq mm) and a >32a trip switch for safe operation.
This tankless water heater is a convenient choice for instant hot water needs in specific applications. It offers great features and customer support, making it a reliable addition to your home.
3. 14kW Tankless Water Heater Electric
Rating: 8.7/10
Tired of lukewarm showers or waiting for your hot water tank to refill? The ORBEK 14kW Electric Tankless Water Heater offers a solution for endless hot water. This 240-volt unit heats water on demand, meaning you get hot water as soon as you turn on the tap. It’s designed to provide enough hot water for 2-3 different uses at the same time, like a shower and a sink. Plus, it’s energy efficient, which could save you money on your electricity bills.
What We Like:
- Instant, endless hot water supply for up to 3.38 GPM.
- High energy efficiency, potentially cutting electricity costs by up to 60%.
- Comprehensive safety features, including ETL certification.
- Stable temperature control, keeping your shower temperature within 1°F.
- Easy-to-read LED digital display for simple temperature adjustments.
- Compact and space-saving design, taking up less room than traditional heaters.
- Easy installation with improved structural design.
- Long-term return and exchange services with professional support.
What Could Be Improved:
- Requires a specific 240V/60AMP two-pole breaker, 6 AWG wires, and 1/2″ NPT water connections, so check your electrical setup before buying.
This ORBEK tankless water heater is a smart choice for consistent hot water and potential energy savings. It offers modern features and safety for your home.
4. Rheem 18kW 240V Tankless Electric Water Heater
Rating: 8.7/10
Meet the Rheem 18kW 240V Tankless Electric Water Heater in sleek gray. This heater is a smart choice for busy households. It heats water only when you need it, saving energy. You get hot water instantly, no more waiting for a tank to fill!
What We Like:
- Precise temperature control: The digital display shows the exact temperature, and it’s accurate to within 1 degree. You can easily set your perfect hot water temperature.
- Smart power use: It has advanced self-modulation. This means it only uses the power it needs for the hot water you’re using.
- Long-lasting heating: It uses two durable copper immersion heating elements. These are built to last and can be fixed if needed.
- Good hot water flow: It can deliver up to 4.4 gallons of hot water per minute. This is enough for most daily needs.
- Easy setup: The water connections are simple, with bottom 3/4 inch NPT connections. They are threaded, making replacement easy.
What Could Be Improved:
- Initial cost: Tankless water heaters can have a higher upfront cost compared to traditional tank heaters.
- Electricity needs: An 18kW heater requires a significant electrical supply, so ensure your home’s electrical system can handle it.
This Rheem tankless water heater offers efficient and on-demand hot water. It’s a modern solution for your home’s hot water needs.
5. 18kW Tankless Water Heater Electric
Rating: 8.6/10
Tired of cold showers? The ORBEK 18kW Tankless Water Heater is here to help. This electric heater gives you hot water exactly when you need it. It’s a smart choice for your home, saving space and energy.
What We Like:
- Instant hot water flows continuously, up to 4.17 gallons per minute. This means you can run 2-3 faucets or showers at the same time without running out of hot water.
- It’s very energy efficient. It uses less electricity than old tank water heaters, possibly saving you up to 60% on your bills.
- Safety is a top priority. It’s ETL certified and has many safety features like protection against leaks, overheating, and dry heating.
- You get perfectly warm showers every time. A smart chip keeps the temperature steady within 1°F.
- The LED screen makes it easy to see and change the temperature from 86°F to 140°F.
- It’s small and saves a lot of space. It fits easily in most homes and is designed for simple installation.
- Orbek offers good customer support with returns, exchanges, and help from experts.
What Could Be Improved:
- This heater needs a high-power electrical setup. You’ll need two 240V/40A breakers, two sets of 8 AWG wires, and 3/4″ water connections. It’s best to have an electrician check if your home’s wiring can handle it.
This ORBEK tankless water heater offers a modern, efficient, and safe way to get endless hot water. It’s a great upgrade for any home looking for comfort and savings.
The Ultimate Buying Guide: Your Tankless Hot Water Heater Explained
Tired of running out of hot water? A tankless hot water heater might be your perfect solution. These modern marvels heat water on demand, meaning you get hot water whenever you need it, without a giant tank taking up space. Let’s dive into what you need to know before you buy.
Why Go Tankless?
Tankless water heaters offer several advantages over traditional tank models. They are more energy-efficient, saving you money on utility bills. They also last longer and take up less space. Plus, you’ll never have to worry about a leaky tank flooding your home.
Key Features to Look For
When shopping for a tankless water heater, keep these features in mind:
- Flow Rate: This tells you how much hot water the heater can provide at once. Measure the hot water needs of your household. Consider how many showers, faucets, and appliances might run at the same time. A higher flow rate is better for larger families or homes with multiple bathrooms.
- Temperature Rise: This is the difference between the incoming cold water temperature and the desired hot water temperature. Different climates have different incoming water temperatures. Make sure the heater can handle your local conditions and your preferred hot water setting.
- Energy Source: Tankless heaters come in electric or gas (natural gas or propane) models. Gas models are often more powerful and can provide higher flow rates. Electric models are easier to install but might have lower flow rates. Consider what energy source is available in your home.
- Fuel Efficiency (Energy Factor): Look for a high energy factor (EF). A higher EF means the heater wastes less energy. This translates to lower energy bills.
- Size and Venting: Tankless heaters are compact. However, gas models require venting for safety. Check the venting requirements and ensure your home can accommodate them.
- Smart Features: Some newer models offer smart technology. These allow you to control temperature settings and monitor energy usage from your smartphone.
Important Materials
The materials used in tankless water heaters affect their durability and performance.
- Stainless Steel Heat Exchanger: This is the heart of the unit. Stainless steel is resistant to corrosion and lasts a long time. It transfers heat efficiently.
- Copper Heat Exchanger: Copper is also a good conductor of heat. It’s a common material, but stainless steel is generally considered more durable and corrosion-resistant for tankless heaters.
- Durable Casing: The outer casing should be made of sturdy materials that can withstand heat and moisture.
Factors That Improve or Reduce Quality
Several things impact the quality and lifespan of your tankless water heater.
What Improves Quality:
- Regular Maintenance: Descaling your unit annually is crucial, especially in areas with hard water. This prevents mineral buildup that can reduce efficiency and damage the heater.
- Professional Installation: Hiring a qualified plumber ensures the unit is installed correctly. Proper installation prevents leaks and ensures optimal performance and safety.
- Proper Sizing: Choosing a unit that matches your household’s hot water needs prevents the heater from being overworked. An undersized unit will struggle to keep up.
What Reduces Quality:
- Hard Water: Mineral deposits in hard water can clog the heat exchanger. This reduces efficiency and can lead to premature failure.
- Neglecting Maintenance: Skipping regular descaling is a common mistake that significantly shortens the life of the heater.
- Improper Venting (for gas models): Inadequate or incorrect venting can be a safety hazard and impact performance.
User Experience and Use Cases
Tankless water heaters offer a superior user experience for many.
- Continuous Hot Water: The biggest win is never running out of hot water. This is great for busy families, people who enjoy long showers, or those who frequently use dishwashers and washing machines simultaneously.
- Space Saving: Their compact size frees up valuable space in your home. You can install them on a wall, indoors or outdoors, depending on the model.
- Energy Savings: Users report noticeable reductions in their energy bills. The on-demand heating means you only use energy when you need hot water.
- Quieter Operation: Many tankless models operate more quietly than traditional tank heaters.
Common Use Cases:
- Single-Family Homes: Ideal for families of all sizes looking for efficiency and endless hot water.
- Apartments and Condos: Their small size makes them a great fit for smaller living spaces.
- Second Homes or Vacation Properties: They are energy-efficient and only use power when needed, making them perfect for homes that aren’t occupied year-round.
- Remodels and New Construction: A modern upgrade that adds value and improves efficiency.
Frequently Asked Questions About Tankless Hot Water Heaters
Q: How long do tankless water heaters last?
A: Tankless water heaters typically last 20 years or more, which is longer than traditional tank models.
Q: Are tankless water heaters expensive?
A: The initial cost of a tankless water heater can be higher than a tank model. However, their energy efficiency and longer lifespan often make them more cost-effective over time.
Q: Do I need special plumbing for a tankless water heater?
A: Gas tankless heaters may require larger gas lines. Electric models might need upgraded electrical circuits. Always consult a professional installer.
Q: Can a tankless water heater handle multiple hot water demands at once?
A: Yes, if you choose a model with a sufficient flow rate. Consider your household’s peak usage to select the right size.
Q: How much space does a tankless water heater take up?
A: They are very compact. Most can be mounted on a wall, taking up much less space than a bulky tank heater.
Q: What is “scaling,” and why is it important to prevent it?
A: Scaling is the buildup of minerals from hard water inside the heater. It reduces efficiency and can damage the unit. Regular descaling prevents this.
Q: Can I install a tankless water heater myself?
A: While some DIYers attempt it, professional installation is highly recommended for safety and optimal performance. Gas models require proper venting.
Q: How do I know what size tankless water heater I need?
A: You need to calculate your peak hot water demand based on the number of people in your home and the fixtures you use simultaneously. A plumber can help with this calculation.
Q: Are electric tankless water heaters good?
A: Electric tankless heaters are great for smaller homes or for point-of-use applications. They are easy to install but may have lower flow rates than gas models.
Q: What is the difference between a gas and an electric tankless water heater?
A: Gas heaters generally offer higher flow rates and faster heating. Electric heaters are often simpler to install but may not be suitable for very high hot water demands.
In conclusion, every product has unique features and benefits. We hope this review helps you decide if it meets your needs. An informed choice ensures the best experience.
If you have any questions or feedback, please share them in the comments. Your input helps everyone. Thank you for reading.