Best Tankless Water – Top 5 Picks & Review

Imagine this: you’re halfway through a long, hot shower, ready to relax, and suddenly, the water turns cold. Frustrating, right? For many of us, running out of hot water is a common annoyance, especially when the whole family needs to get ready in the morning or after a busy day. This is where tankless water heaters come into play, promising an endless supply of hot water.

But choosing the right tankless water heater can feel like navigating a maze. There are so many brands, models, and features to consider! It’s easy to feel overwhelmed by the technical jargon and the sheer number of choices. You want to make sure you get one that’s efficient, reliable, and fits your home’s needs without breaking the bank.

In this post, we’re going to break down everything you need to know about tankless water heaters. We’ll explore what makes them different, the benefits they offer, and the key things to look for when you’re ready to buy. By the end, you’ll feel confident in choosing the perfect tankless water heater for your home, so you can say goodbye to cold showers forever!

Our Top 5 Tankless Water Recommendations at a Glance

Top 5 Tankless Water Detailed Reviews

1. EcoSmart ECO 11 Electric Tankless Water Heater

EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology

Rating: 8.8/10

The EcoSmart ECO 11 Electric Tankless Water Heater is a smart choice for your home. It gives you endless hot water whenever you need it. This heater is very efficient and saves you space. Its special technology makes sure the water temperature stays just right.

What We Like:

  • Endless hot water that never runs out.
  • Keeps water temperature steady, within 1 degree of what you set.
  • Very energy efficient, saving you money on bills.
  • Small and saves a lot of space compared to old tank heaters.
  • Can be mounted on a wall or at the exact spot you need hot water.
  • Heats water only when you use it, unlike tank heaters.
  • Great for bathrooms, small sinks, or office break rooms.
  • Provides 1.3 to 3.1 gallons of hot water per minute.

What Could Be Improved:

  • Requires a 54 Amp draw, which might need an electrical upgrade for some homes.
  • Sizing needs careful checking with the guide to ensure it meets your specific hot water needs.

The EcoSmart ECO 11 is a fantastic way to get on-demand hot water while saving energy and space. It’s a modern solution for efficient heating.

2. ECOTINYMACH 110V Tankless Water Heater Electric

ECOTINYMACH 110V Tankless Water Heater Electric, 3000W Compact Water Heater Under Sink, Conveniently Convertible Between Fahrenheit and Celsius

Rating: 9.3/10

Tired of waiting for hot water or dealing with bulky heaters? The ECOTINYMACH 110V Tankless Water Heater is a game-changer for your home. This compact, 3000W electric heater delivers instant hot water right where you need it, like under your sink, without taking up much space. It’s an energy-efficient way to enjoy hot water on demand, saving you money on your energy bills and helping the planet.

What We Like:

  • Its compact design saves valuable space, making it ideal for smaller areas.
  • You can easily switch between Fahrenheit and Celsius to see the temperature your way.
  • Installation is straightforward, so you can enjoy hot water sooner.
  • It’s electric and tankless, which means it’s energy-efficient and better for the environment.

What Could Be Improved:

  • Requires a dedicated circuit breaker of at least 32 AMP and 2.5mm² (13AWG) wiring, which might need professional installation.
  • The 3000W power might limit its use for very high-demand hot water situations simultaneously.

This ECOTINYMACH tankless water heater offers a smart and convenient solution for instant hot water needs in your home. It’s a great choice for anyone looking for efficiency and space-saving convenience.

3. Rheem 18kW 240V Tankless Electric Water Heater

Rheem 18kW 240V Tankless Electric Water Heater, Gray

Rating: 8.6/10

Say goodbye to cold showers and hello to endless hot water with the Rheem 18kW 240V Tankless Electric Water Heater. This sleek, gray unit is designed to provide your home with on-demand hot water, saving you energy and space. Its smart technology adjusts to your needs, ensuring you always have the perfect temperature. Installation is a breeze, making it a convenient upgrade for any household.

What We Like:

  • Precise temperature control: The external digital display lets you set the water temperature with amazing accuracy, just a degree off!
  • Smart energy use: The heater adjusts its power automatically to match how much hot water you need. This means you only use energy when you need it.
  • Built to last: It has tough copper heating elements that are designed to work for a long time.
  • Easy to fix: If something needs a repair, you can do it right there, no need to replace the whole unit.
  • Plenty of hot water: It can provide up to 4.4 gallons of hot water every minute, enough for your whole family.
  • Simple setup: The water connections are standard and easy to attach, and the digital display makes setup even simpler.

What Could Be Improved:

  • Requires a dedicated high-amperage electrical circuit: Because it’s so powerful, it needs its own special electrical setup, which might mean extra cost for installation.
  • Electric heating can be more expensive to run in some areas: Depending on your local electricity rates, it might cost more to heat water this way compared to gas.

This Rheem tankless water heater offers a modern and efficient way to get hot water. It’s a smart investment for comfort and energy savings.

4. 14kW Tankless Water Heater Electric

14kW Tankless Water Heater Electric, ORBEK 240 Volt On Demand Instant Hot Water Heater, with LED Digital Display, ETL Certified, Up to 3.38 GPM for 2-3 Point of Use

Rating: 9.5/10

The ORBEK 14kW Tankless Water Heater is an electric, on-demand hot water solution that heats water instantly. It’s designed for efficiency and safety, providing endless hot water for multiple uses at once. This heater can be a great addition to your home for consistent hot water.

What We Like:

  • Provides up to 3.38 GPM of endless hot water, enough for 2-3 faucets or showers at the same time.
  • Very energy efficient, potentially saving up to 60% on electricity costs compared to old tank heaters.
  • Heats water in just 3 seconds, giving you instant hot water when you need it.
  • Comes with many safety features like leakage protection and over-temperature protection.
  • The built-in chip keeps the water temperature steady within 1°F for a comfortable shower.
  • Features an easy-to-read LED digital display for setting temperatures between 86°F and 140°F.
  • Its compact size saves over 50% of space compared to traditional tank water heaters.
  • Installation is made easier with structural improvements.
  • Comes with long-term return and exchange services, plus technical support.

What Could Be Improved:

  • Requires a 240V/60AMP two-pole breaker, a set of 6 AWG wires, and 1/2″ NPT water connections, which might require professional installation.

The ORBEK tankless water heater offers a modern and efficient way to get hot water. It’s a smart choice for those looking to save energy and space while enjoying a reliable supply of hot water.

5. EcoSmart ECO 27 Tankless Water Heater

EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1, 17 x 17 x 3.5

Rating: 8.6/10

The EcoSmart ECO 27 Tankless Water Heater is an electric water heater that heats water on demand. It’s a compact unit, measuring 17 x 17 x 3.5 inches. This heater is designed to provide continuous hot water for your home. It uses 27 kilowatts of power. The digital temperature control makes it easy to set your desired water temperature. It runs on a single-phase 240-volt power supply and works with both 50Hz and 60Hz electrical systems.

What We Like:

  • Saves energy by heating water only when you need it.
  • Compact size fits easily in tight spaces.
  • Digital display offers precise temperature control.
  • Provides endless hot water, so you won’t run out during showers or laundry.
  • Sleek design looks good in any utility room.

What Could Be Improved:

  • Requires a dedicated electrical circuit, which might need professional installation.
  • Higher initial cost compared to traditional tank water heaters.
  • May need professional installation for optimal performance and safety.

This tankless water heater is a smart choice for modern homes seeking efficiency and convenience. It offers a great way to enjoy hot water without the drawbacks of older systems.

Your Guide to Choosing the Best Tankless Water Heater

Thinking about upgrading your water heater? A tankless water heater might be the perfect solution! These modern marvels heat water on demand, meaning you never run out of hot water. Let’s explore what makes a great tankless water heater and how to pick the right one for your home.

Key Features to Look For

When you’re shopping, keep these important features in mind:

  • Flow Rate: This tells you how much hot water the heater can produce at once. It’s measured in gallons per minute (GPM). If you have multiple bathrooms or use a lot of hot water appliances, you’ll need a higher flow rate. A good starting point is 5 GPM.
  • Temperature Rise: This is the difference between the incoming cold water temperature and your desired hot water temperature. Your climate affects this. Colder areas need a heater with a higher temperature rise capability.
  • Energy Efficiency: Look for high Energy Factor (EF) ratings. Higher EF means it uses less energy to heat your water, saving you money on bills.
  • Fuel Type: Tankless heaters run on either natural gas or electricity. Gas heaters are generally more powerful. Electric heaters are easier to install and often cheaper upfront.
  • Compact Size: Tankless heaters are much smaller than traditional tank heaters. This saves space in your home.
  • Digital Display: A digital display makes it easy to set and monitor the water temperature.

Important Materials

The materials used in a tankless water heater affect its durability and performance.

  • Stainless Steel Heat Exchanger: This is the heart of the unit. Stainless steel is strong and resists corrosion, which is important for long-lasting performance.
  • Copper Tubing: Copper is an excellent conductor of heat, allowing the water to heat up quickly and efficiently.
  • Durable Outer Casing: The outside of the heater should be made of sturdy materials that can withstand heat and moisture.

Factors That Improve or Reduce Quality

Several things can make a tankless water heater better or worse.

  • Brand Reputation: Stick with well-known brands that have a good track record for reliability and customer service.
  • Warranty: A longer warranty, especially on the heat exchanger, is a good sign of quality. It shows the manufacturer stands behind their product.
  • Installation: Proper installation is crucial. A poorly installed unit won’t work efficiently and could even be unsafe. Always use a qualified professional.
  • Maintenance: Regular maintenance, like flushing the unit to remove mineral buildup, helps it perform at its best for years.
  • Water Hardness: If your water is very hard (has a lot of minerals), it can cause scale buildup in the heater. This reduces efficiency and can damage the unit over time. Using a water softener can help.

User Experience and Use Cases

Tankless water heaters offer a great user experience.

  • Endless Hot Water: The biggest benefit is never running out of hot water, even during busy mornings or when guests are over.
  • Energy Savings: They only heat water when you need it, which means lower energy bills compared to tank heaters that constantly keep water hot.
  • Space Saving: Their small size frees up valuable space in your home.
  • Quiet Operation: Most tankless heaters operate very quietly.
  • Ideal For:
    • Homes with high hot water demand.
    • Families who want to avoid “hot water wars.”
    • People looking to save energy and money.
    • Those who want to free up space in their home.

Frequently Asked Questions (FAQ)

Q: What are the main Key Features to look for?

A: Look for good flow rate (GPM), a suitable temperature rise for your climate, high energy efficiency ratings, your preferred fuel type (gas or electric), a compact size, and a digital display for easy control.

Q: How important is the flow rate?

A: The flow rate is very important. It determines how much hot water the heater can supply at one time. You need a higher flow rate if you use hot water in multiple places at once.

Q: What is temperature rise?

A: Temperature rise is the difference between the cold water temperature entering the heater and the hot water temperature you want. Colder climates need a higher temperature rise.

Q: What materials are best for a tankless water heater?

A: A stainless steel heat exchanger and copper tubing are ideal. These materials offer durability and efficient heat transfer.

Q: Can hard water damage a tankless water heater?

A: Yes, hard water can cause mineral buildup (scale) that reduces efficiency and can damage the unit over time. Using a water softener is recommended.

Q: Is installation difficult?

A: Tankless water heater installation is best done by a qualified professional. Proper installation ensures safety and efficiency.

Q: How much space do they save?

A: Tankless water heaters are significantly smaller than traditional tank heaters. They can often be mounted on a wall, freeing up floor space.

Q: How often should I maintain my tankless water heater?

A: It’s recommended to have your tankless water heater flushed at least once a year, especially in areas with hard water, to remove mineral buildup.

Q: Are tankless water heaters more energy-efficient?

A: Yes, they are generally more energy-efficient because they only heat water when you need it, unlike tank heaters that constantly maintain water temperature.

Q: What is the average lifespan of a tankless water heater?

A: With proper maintenance, a tankless water heater can last 20 years or more, which is often longer than traditional tank water heaters.

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.