Best Tankless Water Heater Models for Efficient Home Heating in 2024

best tankless water heater

Last updated on April 13th, 2024 at 11:54 pm

Imagine the comfort of having a continuous supply of hot water with the best tankless water heater at your beck and call, without the bulkiness and energy inefficiency of a traditional tank heater. Tankless water heaters, increasingly popular for their compact size and energy-saving prowess, provide exactly that.

These on-demand water heaters heat water directly without the need for storing it, ensuring that hot water is available whenever you need it. The absence of a tank means you are also not constantly reheating water, which translates to lower energy bills and less space occupied in your home.

When selecting your ideal tankless water heater, materials and build quality matter immensely as they directly affect the longevity and efficiency of your unit. You should also consider the flow rate, measured in gallons per minute (GPM), which determines how much hot water the heater can deliver.

If you have a larger household or higher hot water demands, you’ll need a heater with a higher GPM. Additionally, you should pay attention to the type of fuel the heater uses—electricity, natural gas, or propane—as this will influence the installation process and operating costs.

This article points you towards tankless water heaters that stand out in terms of reliability, efficiency, and value for money. By cross-referencing specifications with user experiences and expert reviews, a comprehensive view emerges, helping you find the unit that not only meets your hot water needs but also fits neatly into your life and budget.

Whether it’s a crisp morning shower or the need to wash dishes in a snap, you’re on the right path to making an informed decision that ensures your home runs smoothly.

What is a Tankless Water Heater and How It Works?

A tankless water heater, also known as an on-demand water heater, is a compact device that heats water without the need for a storage tank. When you turn on the hot water tap, cold water travels through a pipe into the unit, and either a gas burner or an electric element heats the water to the desired hot water temperature.

Structure:

  • Heat Source: Gas burner or electric element
  • Water Pipe: Incoming cold water supply
  • Heat Exchanger: Transfers heat to the water
  • Controls: Manage temperature output

Functional Principle:

  1. You turn on the hot water tap.
  2. A flow sensor activates the heater.
  3. Water is heated as it passes through the heat exchanger.
  4. Hot water is delivered to your tap without delay.

Benefits:

  • Efficiency: You heat water only when it’s needed, avoiding the standby energy losses of a traditional tank.
  • Savings: By heating water on demand, you could see a reduction in energy bills.
  • Longevity: They often have a longer lifespan than tank heaters.
  • Space Optimization: Their compact size frees up space in your home.

Thanks to the clever design, you experience a continuous flow of hot water with potentially lower energy consumption. This not only saves space in your home but may also reduce your energy bills, which is a win-win situation! With proper maintenance, a tankless water heater can serve you well for many years, more so than its tank counterpart, making it a worthy investment for your home.

How We Chose The Top Tankless Water Heater

When selecting the best tankless water heaters for you, we focused on several key criteria to ensure quality and performance. Our evaluation process included:

  • Energy Efficiency: We carefully examined the energy ratings, opting for heaters that provide the best output with minimal energy consumption.
  • Capacity: Your hot water needs are paramount. We compared flow rates to ensure you have a constant supply throughout your daily use.
  • Durability: Products that are built to last, with warranties to back them up, were favored to give you peace of mind.
  • Performance: Heaters with rapid heating times and consistent temperatures made the cut.
  • User Reviews: Your peers’ experiences are invaluable. We included models with positive feedback and high customer satisfaction.
  • Price: Affordable options without compromising on quality were chosen to suit various budgets.
  • Brand Reputation: We considered the credibility of manufacturers and their customer service responsiveness.
CriteriaImportance
Energy EfficiencyHigh
CapacityHigh
DurabilityMedium
PerformanceHigh
User ReviewsMedium
  • Price | High –
  • Brand Reputation | Medium

In addition, innovative features such as self-modulating technology and smart home compatibility played a part in refining our choices. Our goal was to give you a selection that meets your needs with reliable and cost-effective options.

Best Tankless Water Heaters

If you’re looking to save space and enjoy endless hot water, you’re in the right place. Tankless water heaters are a fantastic way to go for a more energy-efficient and cost-effective home. Say goodbye to running out of hot water during showers and hello to a sleek, compact design that provides hot water on demand.

Scroll down for a roundup of the top tankless water heaters that have been vetted for performance, durability, and ease of use. Your upgrade to a more modern and eco-friendly home is just a few clicks away!

Best Overall – Stiebel Eltron Tempra 36 Plus

If you’re on a quest for a high-efficiency tankless water heater, the Stiebel Eltron Tempra 36 Plus is a robust choice, especially for families seeking an uninterrupted supply of hot water.

Pros

  • Endless hot water supply on demand
  • Saves space with its compact, no-venting design
  • Silent electronic operation

Cons

  • High initial installation cost
  • Requires substantial electrical service (300 A)
  • Less effective in cold climates

The Stiebel Eltron Tempra 36 Plus water heater embodies innovation with its Advanced Flow Control technology. This smart feature ensures a steady temperature, a boon during high usage when it slightly reduces water flow, rather than letting the temperature drop.

By design, its sleek, minimalist appearance allows you to reclaim space inside your home. Say goodbye to bulky hot water tanks and hello to more closet space.

Efficiency is another standout aspect of this heater. Unlike traditional units, it doesn’t heat water only to lose some of that energy as standby heat loss. Instead, the heater activates only when needed, cutting down energy consumption.

When it comes to the home, a one-size-fits-all approach rarely works. This tankless water heater shines for the homeowner looking to maximize energy efficiency, minimize space consumption, and provide a continuous hot water supply for a busy household.

However, if you live in an area with particularly frigid inlet water temperatures, you may discover that the Tempra 36 Plus struggles to reach the desired heat in a single pass.

Moreover, initial setup might be more complex, requiring a significant electrical system upgrade, which can lead to higher upfront costs. But for those able to make the investment, the long-term savings on energy bills render it a smart pick.

Best Budget – EcoSmart ECO 27

If consistent and efficient hot water is a priority for your northern home or for filling that oversized tub, the EcoSmart ECO 27 might just be the right pick for you.

Pros

  • Provides a continuous hot water supply on demand
  • Compact design allows for versatility in placement
  • Energy-efficient operation can save on costs

Cons

  • Professional installation required for optimal performance
  • High upfront electrical setup costs
  • May underperform in extremely cold climates

Considering your need for a reliable and efficient water heating solution, the EcoSmart ECO 27 stands out with its ability to provide an endless supply of hot water. Imagine never having to schedule showers or baths around your water heater’s capacity again. Its streamlined design means it takes up significantly less space than traditional tank heaters, giving you more room in your utility area.

In terms of efficiency, this tankless water heater only heats water when it’s on demand—making it not only environmentally friendly but also kind on your wallet over time. Your monthly energy bills could see a noticeable decrease, which is always a welcoming aspect. Although, be prepared for the initial setup, which may require an electrician to ensure the unit’s high electrical demands are met.

However, it’s always prudent to manage expectations when dealing with products that excel in efficiency. While the EcoSmart ECO 27 is a powerhouse in moderate climates, its performance can be influenced by the temperature of the incoming water, particularly in extremely cold regions.

This could mean less hot water flow when it’s really cold outside. That said, it’s a solid choice for those wanting to embrace the convenience and savings of a modern tankless water heater system.

Best for Large Households – Rinnai RU199iN

If you’re after endless hot water and energy savings, this Rinnai model could be your match.

Pros

  • Endless hot water supply on demand
  • Space-saving and energy-efficient design
  • Remarkably extensive warranty coverage

Cons

  • Professional installation is a necessity
  • Initial unit cost may be higher than traditional heaters
  • Wi-Fi monitoring requires additional purchase

If your current water heater is on its last legs or you’re thinking of upgrading to a tankless model, the Rinnai RU199iN should catch your eye. This appliance is designed to meet the needs of homeowners who prioritize efficiency and consistent hot water flow. Its compact size frees up valuable space in your home, and thanks to its energy-efficient operation, you could see your utility bills shrink.

Although this beauty is compact, it packs a punch with its ability to deliver water precisely when and where you need it. Gone are the days when you had to schedule your family’s showers around the water heater’s whims. Plus, with the integration of Circ-Logic technology, you can set recirculation patterns that align with your daily habits, offering convenience and time savings.

For the more tech-savvy, the Rinnai system can also play nice with your smart devices. While the necessary Controlr module isn’t included, it’s worth considering if you want to adjust settings from anywhere. Just be prepared for the additional investment.

To avoid headaches down the line, be sure to call in a professional for installation. Taking this step ensures your tankless water heater operates as smoothly as it should, without any unexpected hiccups. Remember, though the price of entry is higher than a traditional tank heater, the long-term payoff in energy efficiency and endless hot water might just sweeten the deal for you, making it an excellent choice for the environmentally conscious and convenience-focused homeowner.

Best for Small Homes and Apartments – Rheem RTEX-13

The Rheem RTEX-13 might be what you’re looking for if an efficient and space-saving water heater is on your list.

Pros

  • Provides precise temperature control
  • Energy efficient at 99.8%
  • Simplified installation process

Cons

  • May require professional installation
  • Not suitable for high demand simultaneously
  • Limited flow rate compared to larger units

Rheem’s RTEX-13 is a solid choice if you’re in the market for a tankless water heater that doesn’t hog space. This model is particularly suited for small to medium-sized homes, where the demand for hot water is moderate. Its digital thermostatic control with an LED display ensures you get the exact temperature you desire, avoiding the all-too-common guesswork associated with dial-based systems.

The energy efficiency of this heater is a significant advantage. Almost all the energy consumed goes directly into heating the water, so you can expect your utility bills to reflect only what you use. This is especially beneficial for those who are environmentally conscious or looking to save on monthly costs.

Installation of the Rheem RTEX-13 is straightforward, and it comes with the necessary 1/2 NPT adapters. However, it’s probably wise to have a professional handle the installation to ensure everything is up to code, especially regarding the electrical aspects. Once set up, the unit takes up minimal space and will provide a consistent supply of hot water, as long as you’re within its flow rate capacity.

While highly efficient, the flow rate may not support high-use households, particularly if multiple appliances or fixtures need hot water simultaneously. It’s best suited for individuals or small families with lower hot water usage. The digital display and external controls offer peace of mind and ease of use, letting you adjust the temperature in one-degree increments, which is handy in managing water temperature to your exact preference.

Best Electric – Rheem RTEX-36

If you’re seeking endless hot water with energy efficiency in mind, the Rheem RTEX-36 could be your match.

Pros

  • Offers continuous hot water on demand
  • Energy-efficient, reducing overall costs
  • Simple to adjust temperature controls

Cons

  • Requires a substantial initial investment
  • Professional installation recommended
  • May need upgraded electrical systems in some homes

The Rheem RTEX-36 is particularly suitable for homeowners looking for an energy-efficient solution to their hot water needs. It garners appreciation for providing an endless stream of hot water without the wait, which is a step up from waiting for a tank to refill and reheat.

Not only does its performance stand out, but its inbuilt energy efficiency can lead to reduced utility bills over time, a consideration for the environmentally conscious. The digital temperature display coupled with the external controls allows for precise temperature adjustments, a feature that enhances user convenience.

Comparing to other models on the market, the Rheem RTEX-36 combines high wattage capability with a self-modulating power control. This means it intelligently adjusts its energy output based on the amount of hot water you need, distinguishing it from less adaptive units. The result is a balance of performance and efficiency that ups the appeal for its users.

However, be ready for a significant upfront cost, and potentially some additional expenses for installation by a professional. Additionally, older homes might need electrical system upgrades to handle the 36 kW power draw. It’s important to weigh these considerations against the long-term benefits of installing this tankless water heater.

Best Gas – Rinnai RL75IN

If you’re aiming for endless hot water with energy efficiency for a mid-sized home, the Rinnai RL75IN gas tankless water heater could be just what you need.

Pros

  • Space-saving and unobtrusive design
  • High flow rate perfect for multiple bathrooms
  • Long-term warranties provide peace of mind

Cons

  • Professional installation required
  • Higher initial investment than traditional tanks
  • WiFi module not included

Compact yet capable, the Rinnai RL75IN Tankless Hot Water Heater transforms how you use hot water. It maintains a small footprint, much like a compact suitcase, ensuring you save on space without compromising functionality. Its 7.5 GPM flow rate is robust enough to handle the hot water needs of two to three bathrooms, meaning your household won’t face the dreaded cold shower, even if everyone is getting ready at the same time.

You might appreciate that the Rinnai RL75IN is designed with forward-thinking technology. It comes with Circ-Logic technology, which allows you to schedule recirculation patterns to align with your hot water needs. However, keep in mind that for WiFi connectivity and remote control, the Controlr module is necessary but sold separately.

When considering a tankless water heater, it’s important to recognize the need for professional installation. The Rinnai RL75IN is no exception; it requires an expert to ensure proper setup and safety. The good news is, once installed, the unit’s performance is remarkable compared to traditional tank water heaters. It wastes no energy keeping a tank of water hot, thus reducing monthly bills in the long run.

In choosing the Rinnai RL75IN, you’re selecting a combination of reliability, efficiency, and convenience. Just be mindful of the additional costs for installation and any smart features you may wish to use.

Best Propane – Rinnai V53DeP

If constant hot water and energy efficiency are your top priorities, this Rinnai propane tankless water heater is a solid investment.

Pros

  • Supply of unlimited hot water
  • Compact design saves space
  • Wi-Fi monitoring capability

Cons

  • Professional installation required
  • Not the highest flow rate available
  • Higher initial cost compared to tank heaters

Opting for propane tankless water heaters means waving goodbye to unexpectedly cold showers. A whopping 5.3 gallons per minute flow keeps your hot water steady, even if you’re simultaneously running multiple appliances. Although it’s built to perform, remember that expert hands are needed to secure a flawless installation, adding to the upfront cost.

Space-saving is a breeze with the Rinnai’s compact size, allowing you more room in utility areas for other essentials. Also, its energy-efficient operation ensures that water is heated only when you need it, leading to potential savings on your utility bills.

Adding a futuristic touch, this heater’s Wi-Fi monitoring capabilities allow you to control settings from afar—just keep in mind you’ll need to purchase the optional Controlr module. While 5.3 GPM does the job for most homes, some may seek even higher flow. This efficiency and control do come at a price, as tankless models like this one tend to be pricier than their tank counterparts initially.

It’s an excellent choice for homeowners aiming to minimize their energy footprint while maximizing their hot water experience. Whether you’re renovating or building new, align your choice with the assurance of a solid warranty, and enjoy the peace of mind that comes with reliable hot water on-demand.

Best Energy Savings – Eemax EEM24027

If you’re eyeing an energy-efficient solution for endless hot water, the Eemax EEM24027 electric tankless water heater might be your ideal pick.

Pros

  • Only heats water on demand, conserving energy
  • Compact size maximizes space
  • Generally straightforward installation

Cons

  • Requires significant electrical setup with 3 x 40 AMP breakers
  • May lead to higher electricity consumption for some users
  • Potential durability issues as per user reviews

Embracing the advantages of tankless water heating, this unit by Eemax can serve you well if you desire a consistent and instant hot water supply without the ongoing costs of heating a full tank. Geared primarily towards homeowners with a propensity for energy efficiency and space saving, this product could align well with your lifestyle and values.

Highlighting the aspect of minimized heat loss due to on-demand functionality, the Eemax Electric Tankless Heater stands out. By abolishing the need for a reserve tank, it eliminates standby energy expenditure. Nevertheless, prepare for an upfront electrical investment – the installation of triple 40 amp breakers and corresponding heavy gauge wiring is a requirement, not an afterthought.

Despite this, the heater’s footprint is modestly small, which might thrill you if you plan to retrofit an older home or declutter a utilities closet. The streamlined design ensures it doesn’t commandeer more space than necessary.

Blending in with these utilitarian perks, the installation process garners praise for its simplicity, although some users have experienced technical setbacks. It’s a cake walk for some, yet others have reached out for comprehensive technical manuals and support. With such a device, caution dictates awareness of possible maintenance and support needs down the line.

Balancing the promise of lower long-term costs against the initial electrical modifications needed, those with an eco-centric mindset and the readiness to invest in proper setup may find the Eemax Electric Tankless Heater aligns elegantly with their domestic needs.

Best Compact – Titan N-120S

The Titan N-120S SCR2 offers savings in space and energy for homeowners seeking efficient hot water solutions.

Pros

  • Increased energy efficiency can significantly lower utility bills.
  • Compact design saves space compared to traditional water heaters.
  • Advanced technology enhances temperature accuracy and prevents dry starts.

Cons

  • Installation may require updates to your existing electrical system.
  • Might not be sufficient for simultaneous, multiple high-flow applications.
  • Potential for phase-out due to growing preference for gas models in some regions.

When considering the Titan N-120S SCR2 Tankless Water Heater, its sophisticated design is a standout. This model shines by providing consistent hot water on demand using its intelligent microprocessor, which monitors temperature variances closely ensuring stability and efficiency. It’s tailored specifically for those desiring a blend of technology and conservation, perfect for eco-conscious homeowners or small families.

Imagine reclaiming the closet or corner where your bulky traditional tank once sat. The Titan’s sleek profile offers invaluable space savings, allowing you to maximize your living area. An electrician’s inspection of your current setup may be appropriate, as its electrical requirements differ from conventional units.

Energy bills can be daunting, but investing in this tankless water heater could lead to notable cost reductions over time — an aspect that budget-aware individuals will appreciate. Do keep in mind, however, that during peak usage times, its performance might not match the simultaneous demands of larger households.

Those with a bent towards the latest home efficiency technology will find the model’s quick and accurate heating system to be a significant benefit. Although the initial cost and setup could be a hurdle for some, the long-term savings and comfort are worth considering. The Titan N-120S SCR2 is indeed a modern solution for efficient and effective water heating.

Best Eco-Friendly – Stiebel Eltron Tempra 24 Plus

If you’re in the market for a dependable and energy-efficient tankless water heater, the Stiebel Eltron Tempra 24 Plus could be the right fit for your home, offering consistent hot water with energy savings.

Pros

  • On-demand endless hot water supply
  • Compact design with no venting required
  • Eco-friendly with energy cost savings

Cons

  • High initial installation cost
  • May require electrical system upgrade
  • Lower flow rate if demand exceeds capacity

When evaluating tankless water heaters, it’s essential to consider the different demands of a home. The Tempra 24 Plus is a stellar choice for homeowners looking to maximize space and reduce energy consumption. Although this model comes with a steeper initial outlay for installation and potentially additional electrical work, these costs can be offset by the long-term energy savings and the convenience of endless hot water it provides.

One of the standout features of the Tempra 24 Plus is the Advanced Flow Control, ensuring constant comfort by maintaining the water temperature. Even if you have multiple faucets running simultaneously, this unit strives to provide continuous hot water by slightly reducing the flow. It’s a technological leap from traditional tank water heaters, which are often prone to standby heat loss and aren’t as kind to your wallet or the environment.

Another attractive aspect is the unit’s design. Gone are the days of bulky water heaters taking up precious space. Its sleek white casing is both space-saving and pleasing to the eye, fitting seamlessly into modern homes. Moreover, no venting means installation is not confined to spaces with external access, broadening your placement options.

Lastly, the user-friendly operation should be highlighted. A digital display and preset temperature settings make usage straightforward. Eco-conscious homeowners will appreciate the Saving Monitor, which provides insights into energy consumption, allowing better management of utility costs.

If you value efficiency, long-term savings, and a continuous supply of hot water, the Stiebel Eltron Tempra 24 Plus is designed for you. Despite needing a bit more upfront investment and some home adjustments, the benefits of embracing this advanced water heating technology are clear, making it a compelling choice to consider.

Best RV Tankless Water Heater – FOGATTI RV Tankless Water Heater

The FOGATTI RV Tankless Water Heater, InstaShower 8 Plus, Gen 2, is an ideal choice for adventurous RV owners seeking instant hot water and efficient space utilization.

Pros:

  1. Instant Hot Water: The InstaShower 8 Plus provides immediate access to hot water, eliminating the need to wait for it to heat up.
  2. Energy Efficiency: With its tankless design, it heats water only when needed, reducing energy consumption and utility costs.
  3. Space-Saving Design: The compact size of this water heater makes it perfect for RVs and mobile homes, optimizing living space.
  4. Adjustable Temperature Settings: Users can easily adjust the temperature to their preference, ensuring a comfortable shower experience.

Cons:

  1. Initial Cost: The upfront cost of the InstaShower 8 Plus may be higher compared to traditional water heaters.
  2. Installation Complexity: Professional installation may be required, adding to the overall expense.
  3. Limited Water Flow: Depending on the model and water pressure, the flow rate may be lower than traditional water heaters, impacting shower experience.

Overall, the FOGATTI RV Tankless Water Heater, InstaShower 8 Plus, Gen 2, is best suited for RV owners looking for instant hot water, energy efficiency, and space-saving design.

While it may have a higher initial cost and require professional installation, its key features such as instant hot water, energy efficiency, compact size, and adjustable temperature settings set it apart from other tankless water heaters on the market.

Buying Guide

Consider Your Water Demand

To find the ideal tankless water heater, assess the water flow rate you’ll need, which is measured in gallons per minute (GPM). Determine the number of fixtures you may use simultaneously and sum up their flow rates.

Determine Energy Source

Tankless water heaters can operate on electricity, natural gas, or propane. Your choice will impact installation costs and ongoing energy expenses. Verify the availability of energy sources in your area before deciding.

Evaluate Energy Efficiency

Look for Energy Factor (EF) ratings to understand efficiency. A higher EF means better energy utilization and possibly lower operational costs. Energy efficiency is pivotal in reducing your long-term expenses.

Size Appropriately

Correct sizing is crucial for optimal performance. A unit that’s too small won’t meet demand, while an oversized one may lead to energy wastage. Consider both the flow rate (GPM) and temperature rise required for your location.

Installation and Ventilation

Installation requirements differ based on the type and location of the water heater. Indoor units may require proper venting to expel gases, while outdoor units have different specifications. Factor in these requirements, as improper installation can cause safety issues.

Upfront Costs vs. Long-Term Savings

While tankless water heaters generally cost more upfront than traditional models, they often lead to savings in the long term due to lower operational costs. Assess your budget and weigh initial expenditures against potential savings on energy bills.

Tankless vs Traditional Heaters – A Comparative Analysis

When considering a new water heater, you might be weighing the pros and cons of tankless versus traditional models. Here’s a friendly comparative analysis to help you understand the differences:

Installation Ease and Initial Cost

  • Traditional water heaters are typically easier and less expensive to install. Generally, your home is already set up for a tank-type system.
  • Tankless heaters, on the other hand, might require additional upfront work and costs, such as upgrading gas lines or venting systems.

Energy Efficiency

  • Tankless models provide hot water on demand and do not store water, making them more energy-efficient because they avoid standby heat loss.
  • Traditional water heaters heat a large tank of water, which can result in energy waste when the stored hot water is not in use.

Longevity

  • Longer lifespan of up to 20 years with proper maintenance.
  • Traditional tanks usually last about 10-15 years, depending on maintenance and water quality.

Running Costs

  • The improved energy efficiency of tankless heaters can lead to lower monthly energy bills, which might help offset the higher initial cost over time.
  • Traditional heaters cost less to purchase but have higher energy bills because of the constant heating of a water reserve.

Here’s a quick comparison table summarizing the key points:

FeatureTankless HeatersTraditional Heaters
CostHigher upfrontLower upfront
EfficiencyMore efficientLess efficient
LifespanUp to 20 years10-15 years
InstallationMay require upgradesUsually straightforward

Remember to factor in your specific household needs and usage patterns when making your decision. Each type has its own set of advantages that might be a better fit for your unique situation.

How to Install a Tankless Water Heater

Installing a tankless water heater can be a great way to save space and energy. While you can attempt to install the unit yourself if you’re experienced with plumbing and electrical systems, it’s highly recommended to contact a professional for assistance, especially if you’re not confident in performing the installation.

Step 1: Select the Right Unit
Ensure you’ve purchased the correct tankless water heater for your home’s needs—considering both size and energy source.

Step 2: Turn Off Utilities
Before beginning, turn off the main water supply and the power or gas supply to the area where you’ll work.

Step 3: Mount the Unit
Select a suitable location, ideally close to existing water and gas lines, and mount the heater to the wall according to the manufacturer’s instructions.

Step 4: Connect Water Lines
Carefully connect the water lines to the heater. It’s important to use the proper pipes and fittings to prevent leaks.

Step 5: Connect Gas or Electric
For gas units, connect the gas line and ensure there are no leaks using a gas leak detector or soapy water. For electric models, properly connect the electrical lines, paying close attention to wire size and circuit requirements.

Step 6: Ventilation
If you’re installing a gas-powered unit, install an approved vent to the outdoors following the manufacturer’s guidelines.

Step 7: Final Checks
Once installed, turn on the water and power supplies and inspect for any leaks or issues. Check the unit’s display to confirm that it’s operating correctly.

Safety Precautions:

  • Always refer to the manufacturer’s installation guide.
  • Ensure your work complies with local building codes.
  • Wear protective equipment when necessary (gloves, goggles, etc.).
  • If at any stage you’re unsure or uncomfortable, contact a licensed professional.

A tankless water heater can be efficient and save space, but safety and adherence to guidelines should be your top priority during installation.

Common Maintenance Tips for Tankless Water Heaters

Ensure that your new tankless water heater lasts a long time and run efficiently with regular maintenance. Here are a few tips to keep your system in top shape:

  • Annual Inspection: At least once a year, have a professional inspect your tankless water heater. They will check for any issues and ensure that everything is operating correctly.
  • Descaling: Over time, minerals from hard water can build up and affect performance. Descaling helps remove these deposits. To do this, flush your heater with a descaling solution or vinegar annually.
  • Filter Cleaning:
    • Step 1: Turn off your heater and shut off the water supply.
    • Step 2: Remove the inlet filter by pulling it out or unscrewing it, depending on your model.
    • Step 3: Rinse the filter under running water and remove any debris.
    • Step 4: Reinsert the filter and turn everything back on.
  • Air Intake and Ventilation: Ensure that your heater’s air intake and vent are clear of obstructions. Regularly check for and remove any dust, dirt, or debris.
  • Water Pressure Check: Maintain a water pressure within the manufacturer’s recommended range to avoid putting undue stress on your heater.
  • Leaks: Inspect for any signs of leakage periodically. Early detection can prevent more significant issues down the line.

Remember, consistency in these maintenance activities is key to the longevity and efficiency of your tankless water heater.

Final Verdict: The Best Tankless Water Heater

After evaluating numerous models, the Stiebel Eltron Tempra 36 Plus stands out as the top choice due to its exceptional efficiency and capacity. It’s capable of delivering up to 1.5 gallons per minute, ensuring consistent hot water for your household needs.

The runner-up is the EcoSmart ECO 27, an electric model that’s both compact and powerful. It offers self-modulating technology, which adjusts energy usage based on the amount of hot water you need. This feature makes the ECO 27 an excellent choice for those looking to save on electricity while still enjoying the benefits of on-demand hot water. It’s ideal for small to medium-sized homes and provides up to 6.6 gallons per minute.

When selecting a tankless water heater from these choices, consider the following tips:

  • Energy Source: Choose a unit that matches your home’s energy setup—either gas or electric.
  • Flow Rate: Ensure the heater can handle your simultaneous hot water needs.
  • Size: Remember that physical dimensions and capacity should fit your available space and demand.
  • Efficiency: Look for high-efficiency ratings to save on operating costs over time.

By keeping these factors in mind, you’ll find a tankless water heater that fits your specific needs and provides continuous hot water with efficiency and convenience.

Frequently Asked Questions

In this section, you’ll find focused answers to common questions that clarify important aspects of using tankless water heaters.

How does hard water affect tankless water heaters?

Hard water, which is high in mineral content, can lead to scale buildup inside your tankless water heater. This accumulation can impair the heater’s efficiency and may also shorten its lifespan. Regular maintenance, including descaling, is crucial to prevent these issues.

Do tankless water heaters require a specific type of venting?

Yes, tankless water heaters do require proper venting, often specific to the model. Gas-powered units typically need stainless steel vents that can resist the high temperatures and corrosive gases emitted, while electric models might not require venting at all. Always refer to the manufacturer’s instructions for the correct venting procedures.

Are there any safety concerns associated with tankless water heaters?

Like all heating devices, tankless water heaters must be correctly installed and maintained to ensure safety. Potential concerns include carbon monoxide leaks from gas-powered units and proper gas line sizing. It’s recommended to install carbon monoxide detectors and have a professional service the heater regularly.

Do tankless water heaters work with solar panels or other alternative energy sources?

Tankless water heaters can integrate with solar panels or other renewable energy sources provided the system is designed for such a setup. Electric tankless water heaters are particularly amenable to solar panel connectivity. Using renewable energy sources can increase efficiency and minimize operational costs.