Best Tankless Water Heaters

of Jan 2025

   In today's modern homes, tankless water heaters are gaining immense popularity as they offer a continuous supply of hot water without the need for a bulky storage tank. Unlike traditional water heaters, these compact and energy-efficient appliances heat water on demand, providing endless hot water for various applications, including showers, dishwashing, and laundry. With their space-saving design, easy installation, and remarkable energy savings, tankless water heaters are revolutionizing the way we experience hot water at home.

Bosch Electric Mini

6. ATTRACTIVE DESIGN: Sleek, attractive exterior design that blends in seamlessly with existing décor when installed in a visible location. Perfect for a kitchen, bathroom, office, or any other space...

Ecosmart ECO MINI 2.5 2.5

The Ecosmart ECO MINI 2.5 2.5-Gallon 120V Electric Mini Tank Water Heater is the perfect solution for eliminating the wait for hot water to reach the faucet. This sleek and compact design features a d...

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

8.8
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5. Patented Self Modulating Technology; Automatically adjusts the energy consumption to match the water usage for maximum efficiency; Digital temperature control allows you to set your temperature in ...

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8.8
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The Rinnai RL94iN Non-Condensing Natural Gas Tankless Water Heater is the perfect solution for those looking for an indoor installation that provides up to 9.8 GPM of hot water. This ultra-compact uni...

EcoSmart ECO 27 Tankless Water Heater, Electric, 27

8.6
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⋅ 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 perf...

EcoSmart ECO 8 Tankless Water Heater, Electric, 8

8.4
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6. Compact Design The EcoSmart ECO 8 Tankless Water Heater is a great choice for those who need a reliable, efficient, and durable water heater. This product is manufactured in China and is designe...

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9.2
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⋅ CONTINUOUS FLOW – Advanced Flow Control patented technology invented by Stiebel Eltron, automatically maintains water temperature for constant comfort. It’ll reduce flow slightly if hot wa...

Stiebel Eltron 233219 2.5 gallon, 1300W, 120V SHC 2.5 Mini

9.2
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⋅ Plugs into standard 120 volt outlet
⋅ T and P valve included
⋅ Wall-mounted with included bracket
⋅ Glass-lined tank and fast recovery
⋅ 6-Year warranty on tank

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⋅ Endless Hot Water: Enjoy unlimited hot water flow throughout the house; compact, durable, and easy to install; professional installation recommended
⋅ Energy and Space Efficient: Spa...

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Rinnai V65iN Non

⋅ Original Design: Tankless hot water heater only heats when necessary to conserve energy; For the latest in non-condensing technology and a cleaner layout that speeds up service and installatio...

Bosch Electric Mini

⋅ CONVENIENT HOT WATER HEATER: 4 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%. Dimensions : 13.75 W x 13.75 H x 13.5...

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⋅ Endless Hot Water: Enjoy unlimited hot water flow throughout the house; compact, durable, and easy to install; professional installation recommended
⋅ Energy and Space Efficient: Spa...

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⋅ Endless Hot Water: Enjoy unlimited hot water flow throughout the house; compact, durable, and easy to install; professional installation recommended
⋅ Energy and Space Efficient: Spa...

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8.8
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⋅ Original Design: Tankless hot water heater's Circ-Logic technology offers recirculation patterns that match your habits; For the latest in non-condensing technology that speeds up service and ...

Rheem 18kW 240V Tankless Electric Water Heater

8.8
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⋅ External digital thermostatic control with LED display (+/1 degree accuracy)
⋅ Most advanced self-modulation, adjust power to meet hot water demand
⋅ Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM
⋅ Simple installation – bottom 3/4 inch NPT water connections
⋅ Threaded for easy replacement, simple installation, digital temperature display

Rheem RTEX

8.6
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⋅ ON/OFF Dial Control with adjustable digital temperature display
⋅ Self-modulating power control
⋅ 24kW Model Flow Rate: up to 5.9 GPM for RTEX-24
⋅ Bottom 3/4" NPT water connections
⋅ On demand, consistent and continuous hot water

Ecosmart ECO 36 36kw 240V Electric Tankless Water Heater

8.6
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⋅ Sleek and compact design with digital output temperature display
⋅ ECOSMART tankless water heaters are 99.8-percent energy efficient
⋅ Manufactured in United States
⋅ Pipe Fittings:3/4 inch NPT
⋅ Required Breaker:4 x 40 A
⋅ 150 A

iHeat Tankless S

8.4
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⋅ The heat tank less stainless Steel construction is a perfect fit for any applications near the ocean, like beach front properties, yachts, small boats, resorts and outdoor kitchens
...

Valuable Tips When Choosing Tankless Water Heaters

Tankless water heaters have become increasingly popular in recent years, and for a good reason. They provide endless hot water while being more energy-efficient than traditional water heaters. However, with so many options on the market, it can be overwhelming to choose the right model for your needs. Here are some valuable tips to keep in mind when selecting a tankless water heater.
1. Size
One of the most critical factors to consider when choosing a tankless water heater is the size. The size of the unit you need will depend on your family's hot water usage. Most manufacturers provide a sizing guide that helps you determine the required unit's size based on the number of bathrooms in your home and the number of people who live there. A larger unit will provide more hot water but will also come with a heftier price tag. For optimal efficiency and cost-saving, choose a size that meets your household's hot water requirements without being too excessive.
2. Flow Rate
The flow rate is the amount of hot water a tankless water heater can produce at any given time. Different models have different flow rates, which can range from 2 gallons per minute (GPM) to 8 GPM or more. The flow rate you need will depend on the number of people in your household and their usage patterns. For example, a family of five will require a higher flow rate than a couple living alone. Consider your household's hot water needs to determine the flow rate that best suits your needs.
3. Energy Efficiency
One of the most significant advantages of a tankless water heater is its energy efficiency. These units are designed to be more energy-efficient than traditional storage tanks, which can save you money on your utility bills in the long run. Look for models with a high energy efficiency rating, such as Energy Star-certified models. These models have been tested and verified to meet the highest energy efficiency standards.
4. Fuel Type
Tankless water heaters can be powered by different fuels, including natural gas, propane, and electricity. Each fuel type has its advantages and disadvantages, so consider the availability and cost of the fuel in your area to determine which one is right for you. Gas-powered units are more energy-efficient than electric models but require access to a natural gas line. Propane-powered models are more flexible but can be more expensive to operate. Electric models are less expensive upfront but can be more expensive to operate.
5. Installation Requirements
The installation requirements for a tankless water heater will depend on the type of unit you choose and the layout of your home. Gas-powered units require access to a gas line, while electric models require access to high-amperage circuits. Some models may require venting or additional plumbing modifications, which can add to the installation cost. Consider the installation requirements and costs before making a final decision.
6. Brand Reputation
There are many brands of tankless water heaters on the market, and each one has its reputation. Research the brands you are considering to determine their reputation for reliability, durability, and customer service. Look for reviews and ratings from current and previous customers to get an idea of the product's performance over time.
7. Cost
The cost of a tankless water heater can vary significantly based on the brand, size, and features. While a lower price may be tempting, keep in mind that you get what you pay for. A cheaper model may not be as energy-efficient or reliable as a higher-end model. Consider the long-term savings in utility bills and the lifespan of the unit when deciding on a budget for your tankless water heater.
Conclusion
Choosing the right tankless water heater for your home can be overwhelming, but these valuable tips should help you make an informed decision. Consider the size, flow rate, energy efficiency, fuel type, installation requirements, brand reputation, and cost when choosing the right model for your home. With the right tankless water heater, you can enjoy endless hot water and energy savings for years to come.

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