If you are looking for a way to save energy, space, and money, you might want to consider switching to a tankless water heater. Unlike traditional water heaters, tankless models heat water on demand, eliminating the need for a bulky storage tank. In this article, we will explore the benefits, features, and types of tankless water heaters, and help you find the best one for your home.

EcoSmart ECO 18 Electric Tankless Water Heater

Unleash the power of advanced water heating technology with the EcoSmart ECO 18 Electric Tankless Water Heater. Crafted for durability and ease of use, this reliable product is your key to efficient water heating. Manufactured in China, it boasts an impressive amperage of 75, ensuring a seamless flow rate of 3.51 gallons per minute at a 35-degree Fahrenheit rise.

Equipped with a user-friendly LED display, this tankless water heater offers precise digital temperature control in 1-degree increments, providing you with complete command over your hot water needs. Save up to 60% on your water heating costs with the self-modulating technology, while the compatibility with 2 x 40 AMP (DP) breakers and 2 x 8 AWG wire ensures a hassle-free installation.

With a compact design measuring 14 inches in width and 17 inches in height, this unit saves up to 12 cubic feet of storage space. The white plastic exterior seamlessly blends into any environment. Weighing in at just 14 pounds, the EcoSmart ECO 18 is a powerhouse with an 18,000-watt capacity, ensuring a constant and efficient water supply. Plus, with a lifetime warranty for residential use, you can trust its performance for the long haul. Never settle for anything less—experience endless hot water and substantial savings with the EcoSmart tankless water heater.

Pros:

• Highly durable construction
• Easy to use with digital temperature control
• Efficient, saving up to 60% on water heating costs
• Compact design, saving up to 12 cubic feet of storage space
• Lifetime warranty for residential use

Cons:

• Manufactured in China
• It requires 2 X 40 AMP (DP) breakers and 2 X 8 AWG wire for installation
• Limited to 5-gallon capacity
• The power source is AC/DC
• Weighs 14 pounds

Rinnai V65EN Tankless Hot Water Heater

Experience the luxury of endless hot water with the Rinnai V65EN Tankless Hot Water Heater. This compact and durable gas-powered unit seamlessly integrates into your home, delivering a powerful and constant hot water flow of up to 6.5 gallons per minute. Perfect for households with up to 5 appliances running simultaneously.

Efficiency takes center stage with an Energy Factor of .82 for both gas types, ensuring optimal performance while conserving energy. The unit’s small footprint and enhanced scale detection contribute to its longevity, minimizing the risk of serious damage over time.

Installation is a breeze with the option to set the temperature at 120°F (adjustable to 140°F by the installer) and compatibility with Rinnai’s full line of digital controllers. Certified for installation in manufactured (mobile) homes, this tankless water heater comes with an integrated error code indicator for easy troubleshooting.

Backed by a robust warranty—10 years for the heat exchanger, 5 years for labor, and 1 year for parts—the Rinnai V65EN ensures peace of mind and reliability. Don’t compromise on comfort; choose a tankless hot water solution that guarantees lasting performance. Upgrade to the Rinnai V65EN for a reliable and efficient hot water experience.

Pros:

• Endless hot water supply
• Energy-efficient with an Energy Factor of .82
• Compact and durable design
• High-performance flow rate of 6.5 GPM
• Compatible with Rinnai digital controllers
• Certified for installation in manufactured homes
• Integrated error code indicator
• 10-year warranty on the heat exchanger

Cons:

• Professional installation recommended
• Gas-powered (may not be suitable for all locations)
• The initial cost of installation
• Limited capacity (6.6 gallons)
• Outdoor installation only

Stiebel Eltron Tankless Heater

Experience an uninterrupted flow of hot water with the Stiebel Eltron Tankless Heater. With its sleek design, this space-saving unit provides on-demand hot water without the need for venting. The electronic switch ensures virtually silent operation, enhancing your living space with tranquility.

Measuring 16.63 inches in width and 14.5 inches in height, this tankless heater boasts a copper-sheathed heating element housed in a durable copper cylinder. The LED display adds a modern touch to its functionality, allowing for easy temperature control.

Operating at 27,000 watts with a 0.39-gallon capacity, this heater is a powerhouse, making it ideal for various household needs. The hard-wired power source ensures reliable and efficient performance.

Crafted with a focus on quality, the Stiebel Eltron Tankless Heater comes with a 7-year leakage and 3-year parts-complete warranty, providing you with peace of mind. Upgrade your home with this cutting-edge appliance, which delivers endless hot water in a compact and efficient package.

Pros:

• On-demand hot water supply
• Sleek and space-saving design
• Virtually silent operation
• LED display for easy temperature control
• Durable copper construction
• 7-year leakage and 3-year parts warranty

Cons:

• Requires hard wiring
• Limited to 0.39-gallon capacity

Best Tankless Water Heaters Buying Guide

Tankless water heaters, also known as on-demand or instantaneous water heaters, have become increasingly popular in recent years as an alternative to traditional tank-style water heaters. Tankless water heaters work by rapidly heating water as it passes through the unit, rather than storing hot water in a tank like traditional models. This allows tankless heaters to provide a constant supply of hot water on demand without running out. There are several factors to consider when choosing the best tankless water heater for your needs.

Fuel Type

One of the first decisions to make is which fuel type you want your tankless water heater to use. The most common options are gas, electric, or propane. Gas tankless heaters are generally more energy efficient and can provide higher flow rates for hot water. However, they require gas lines to be run to the unit. Electric tankless heaters can be easier to install as they simply need an electric connection, but they may not be able to provide as much hot water flow for large households. Propane tankless heaters are ideal for off-grid applications. Consider your available utility connections and hot water needs when choosing between fuel types.

Flow Rate

An important specification to look at is the maximum flow rate of the tankless heater, measured in gallons per minute (GPM). The higher the flow rate, the more hot water the unit can produce at one time. Look for a flow rate that matches the peak hot water demands of your household. For example, running multiple fixtures or appliances at once requires a higher flow rate. Check the specifications of your faucets and shower heads to determine the right flow rate capacity. Going too small can result in weak water pressure.

Energy Efficiency

Since tankless heaters only heat water on demand, they tend to be more energy efficient than traditional water heater tanks, which constantly maintain a supply of hot water. When shopping for a unit, look at its energy factor (EF), a measure of overall efficiency. The higher the EF, the more efficient the heater is. Tankless heaters have EF ratings of.82 or higher. Going with a highly efficient model can provide significant energy savings over time.

Size and Installation

Consider the available space for installing the tankless water heater. Tankless heaters are compact but do require some clearance for ventilation and service access. Outdoor and indoor installation options are available. Indoor heaters need to be properly vented. Look for the dimensions of the unit and minimum installation clearances. Also, factor in any costs for installation materials and labor if you plan to hire a professional.

Additional Features

Higher-end tankless water heaters offer convenience and performance features like Wi-Fi/app connectivity for controlling temperatures remotely, built-in timers, recirculation pumps, and advanced multi-unit designs. Look for features that align with your priorities, whether it’s maximizing efficiency, easing maintenance, or custom control. Consider splurging if a feature will significantly enhance the unit’s usability and performance.

Cost

One of the biggest considerations is the upfront cost of the tankless water heater. Higher flow rates, greater efficiency, and more features will increase the price. The price range can span from a few hundred dollars for basic models to a few thousand for premium units. While pricier to purchase initially, keep in mind the energy savings and long-term durability of a quality tankless heater. There are budget options available that still provide good, on-demand hot water. Focus on key performance specs rather than just the lowest price when investing in a tankless heater.

Conclusion

The best tankless water heater depends on your household’s specific needs and priorities. Determine your required flow rate, fuel type, efficiency level, and features to hone in on models that fit your situation. Investing in a properly sized and high-performing tankless heater can provide continuous hot water for many years while reducing energy usage. Take the time to understand your needs and research the best options within your budget. With the right tankless water heater choice, you can enjoy convenient, reliable, and efficient hot water delivery in your home.

Frequently Asked Question

How do tankless water heaters work?

Tankless water heaters, also known as on-demand water heaters, heat water directly without the use of a storage tank. When a hot water tap is turned on, cold water travels through a pipe into the unit. A gas burner or an electric element then heats the water instantaneously as it flows through the device. This ensures a continuous supply of hot water without the need for storage.

What are the benefits of using a tankless water heater?

Tankless water heaters offer several advantages over traditional tank-style water heaters. They provide an endless supply of hot water, as they heat water on demand. They are also more energy-efficient since they don’t continuously heat water in a storage tank. Additionally, tankless units typically have a longer lifespan than tank-style heaters and take up less space, making them suitable for smaller homes or apartments.

What size tankless water heater do I need for my home?

The size of the tankless water heater you need depends on factors such as the number of bathrooms in your home, your peak hot water demand, and whether you’ll be using gas or electricity. A professional plumber can help you determine the right size unit for your specific needs. Generally, larger homes with multiple bathrooms will require a higher flow rate or multiple units to ensure adequate hot water supply.

Are tankless water heaters more expensive to install than traditional water heaters?

While tankless water heaters typically have a higher upfront cost compared to traditional tank-style water heaters, they can often result in long-term savings due to their energy efficiency and longer lifespan. The installation costs can vary depending on factors such as the complexity of the installation, whether gas lines or electrical upgrades are needed, and any additional venting requirements. It’s advisable to obtain quotes from multiple qualified installers to compare costs.

Do tankless water heaters require maintenance?

Tankless water heaters generally require less maintenance compared to traditional tank-style heaters. However, it’s essential to flush the unit periodically to remove mineral buildup, especially in areas with hard water. Manufacturers usually recommend annual maintenance by a professional plumber to ensure optimal performance and extend the lifespan of the unit. Regular maintenance can help prevent issues such as reduced efficiency or potential damage to the unit.