Best Tankless Water Heaters

9 Best Tankless Water Heaters to Buy in 2019

Tankless water heaters provide instantaneous water heater, on-demand within seconds thereby not only saving you on time, but money on bills as well. In essence, a tankless water heater is designed to provide a constant supply of hot water as needed, without the necessary use of a storage tank. 

Gas or Electric Tankless Water Heater?

The answer to this question heavily depends on the type of fuel available in your area. The three most common fuel sources for tankless water heaters are natural gas, propane and electricity. 

Here are the factors to consider when choosing between gas or electric powered tankless water heaters: 

1. Initial Price

Electric tankless water heaters are significantly less expensive relative to the price of gas tankless heaters. A quality electric tankless water heater can be purchased for as low as 200 dollars, whereas a gas tankless water heater can be more than 1,000 dollars. 

There are two types of gas tankless water heater – non-condensing and condensing. Non-condensing units are less expensive to purchase but more expensive to install because of venting requirements whereas condensing units eliminate the need for it. 

2. Installation

Gas tankless water heater units are more complicated and expensive to install compared to electric tankless water heater units. Often, there are costly home modifications necessary to take in the gas tankless water heater’s venting and gas requirements. Electric units on the other hand does not require ventilation which is why there is no need for home modifications that add up to the initial expenses. 

3. Operating Costs

The overall operating costs of a tankless water heater is the combination of the fuel cost and the unit’s efficiency. 

In general, gas prices fluctuate more often than electricity prices. Although, fuel prices may vary in different regions. Moving forward, the efficiency rating of a water heater comes from the amount of hot water produced by a single unit of fuel. To conclude, the more efficient a tankless water heater unit is, the less fuel is wasted

Gas tankless water heater can achieve 80% to 85% efficiency whereas electric tankless water heaters can consistently achieve an efficiency score in the 90% to 98% range. Even with higher electricity costs, the efficiency of an electric tankless water heater unit will still offset the higher fuel prices. 

4. Hot Water Needs

Colder regions have lower GPM rate than warmer regions. This is due to the incoming water to be cooler which makes units work harder in producing hot water. In this case, gas units can perform better, especially in producing larger amount of hot water supply. 

Both electric and gas tankless water heater units are affected by the temperature of incoming water. Gas tankless water heater units are more capable of delivering more hot water with over 8 GPM than electric tankless water heater units that are only capable of 8 GPM and below. 

5. Maintenance

Gas tankless water heaters require more maintenance. They are prone to mineral scale build-up that demands regular flushing. Water inlet screen also require regular cleaning to remove any debris. On the other hand, electric tankless water heaters very minimal maintenance and inlet screen filter requires cleaning as necessary. Flushing is only done once or twice every year.

6. Warranty and Service Life

Gas tankless water heaters are designed to last for up to 20 years. Electric tankless water heaters often exceed the 20 year life span of gas tankless water heaters.

The best gas tankless water heaters usually offer:

  • 10-year warranty for heat exchanger part,
  • 5-year warranty for other parts and 
  • 1-year warranty for service labor

The electric tankless water heater, on the other hand, typically covers:

  • 5-year warranty for parts and
  • 1-year warranty for labor

7. Environmental Impact

Gas units emit greenhouse gases into the atmosphere whereas electric units do not burn any fossil fuel or release harmful gases into the environment. Needless to say, electric tankless water heaters have lesser carbon footprint compared to gas tankless water heaters.


Review of the Top Best Tankless Water Heaters

Here we rounded up the best tankless water heaters under particular categories – best small and compact, under 200 dollars, between 200 to 300 dollars, over 400 dollars, entire house capacity as well as natural and propane gas water heaters.

Best Small and Compact Tankless Water Heater

1. Bosch Electric Mini-Tank Water Heater Tronic 3000T ES2.5

If you’re looking for a small and compact tankless water heater that fits snugly in limited spaces, then the Bosch Electric Mini-Tank is a great option and our top recommendation.

Compact, lightweight and space-saving, the Bosch Electric Mini-Tank Water Heater Tronic 3000T ES2.5 can supply hot water to 2 sinks at the same time. The tankless water heater unit can supplement a primary water heating source or have the role of being the primary water heating source for point-of-use applications. It is perfect for point-of-use application – powder room, kitchenettes, sinks located far from primary water heater sources, in-law suites.

The point-of-use heater feature, by extension, means “plug and play”. The Bosch 3000T series are basically tapped into cold water line and mounted directly. Other models under the Bosch Electric Mini-Tank Water Heater 3000T Tronic series include:

  • ES4 model – 4 gallon mini tank
  • ES8 model – 7 gallon mini tank

Features and Specifications of the Bosch 3000T ES2.5

  • Knob-type for temperature adjustment – a knob that turns clockwise and counterclockwise is the main control for easy temperature adjustment. By simply turning the knob clockwise will increase the temperature and vice versa. Temperature ranges from 65 to 145 degrees Fahrenheit. 
  • LED indicator – led light beside the knob serves as an indicator when the tank has already reached the set temperature. 
  • Temperature or pressure relief valve – the ES2.5 have a pressure relief valve installed with the system already. During the water heating cycle, the water expands causing pressure inside the water heater to increase. 
  • Floor-standing or wall mounted – the Bosch Tronic 3000T ES2.5 can be installed as a standalone or wall mounted. For wall mounting, brackets are already included. 
  • 120 VAC plug-in connection – The wire type for this model is plug in, therefore, a 120-VAC plug-in connector is provided with the units.
  • Multiple point-of-use applications – applications include powder room, kitchenettes, sinks located far from primary water heater sources, in-law suites.
  • Tank volumes: 2.5 gallons but rated to have 2.7 gallons
  • Heating capacity: 1,440 Watts 
  • Temperature range: 65 to 145 degrees Fahrenheit
  • Recovery rate at 90 degrees Fahrenheit rise: 6.8 GPH
  • Warranty: 6-year limited warranty on unit, 2-year warranty on parts

Pros

  • Compact and lightweight – fits in any space and easily transported
  • CFC-free foam insulation for maximum energy efficiency performance
  • Glass-lined tank for the unit’s durability
  • Supports multiple placement – wall-mounted, standalone

Cons

  • The models under the 3000T Tronic series are not ideal for large homes. It can only supply hot water to two sinks at the same time.

Customer Feedback

Well insulated, efficient, compact, silent and robust – these are a few of the words used by satisfied customers of the Bosch Electric Mini-Tank Water Heater 3000T Tronic series. The ES2.5 and ES4 models have plug-in wire type that makes it easier to power up because of simply plugging it into any electricity sources. Customers say they love the units because they are easy to install and work instantly. Some of the users, use the models in their RV, van or camp set up. Customers say they really are practical, effective space-saving and transportable. 


Best Under $200 Tankless Water Heater

2. EcoSmart ECO 11 Electric Tankless Water Heater

Compact, durable and stylish, the EcoSmart ECO 11 Electric Tankless Water Heater is also ideal for any small point of use application or a small apartment types bathroom, small sink, EcoSmart ECO 11 Electric Tankless Water Heater,and small pantry.

During the warmer climate, ECO 11 has the capacity to provide hot water continuously at up to 2.6 GPM. In addition, the model has a digital display that shows output temperature. It can be adjusted in 1-degree increments. 

Before choosing an EcoSmart ECO 11 tankless water heater, referring to this chart will help in determining if the model suits the required supply of hot water. Typically, the ECO 11 can supply hot water to two hand sink faucets at the same time with 1.3 GPM. Two water-saver showers can also be supplied with hot water at the same time with 3.2 GPM.

Features and Specifications of the EcoSmart ECO 11

  • Point-of-use or low-flow application – for standard hand sink, water-saver showerhead, and standard showerhead. Washing machines and dishwashers. As well as locations like RVs and boats.
  • Equipped with patented, self-modulating technology – this technology is created so that the EcoSmart ECO 11 will only consume the energy required for the specific demand. 
  • Digital temperature control – the EcoSmart ECO 11 is equipped with digital display with temperature control in increments of 1 degree Fahrenheit. The range is between 80 to 140 degrees Fahrenheit.
  • Warranty: Limited lifetime warranty for residential use and installed within 30 days of purchase by a licensed professional.
  • Temperature range: 80 to 140 degrees Fahrenheit

Pros

  • UL-499, ETL listed tankless water heater
  • Stainless steel heat exchanger – for faster heat transfer 
  • Auto-thermal protection – to avoid hazardous thermal issues

Cons

  • Not a very durable model.
  • The manufacturer requires the return of installation documents before 30 days of purchase to avail the limited lifetime warranty.

Customer Feedback

Customers say the EcoSmart ECO 11 does a good job on 1.5 GPM or less even though it is rated at just 1.3 GPM. 1.5 GPM gives adequate supply of hot water for showering given the right kind of showerhead. For showerheads that are rain-type, it consumes more GPM but the tankless water heater unit can still supply the required water. Customers say the EcoSmart ECO 11 uses up space similar to what 2 shoeboxes would consume. Overall, the tankless water heater unit saves a lot of space and energy, and requires only little maintenance. 


Between $200 and 300 Tankless Water Heaters

3. Bosch Electric Mini-Tank Water Heater Tronic 3000T ES8

The ETL listed Bosch Electric Mini-Tank Water Heater Tronic 3000T ES8 is compact, lightweight and durable. The tankless water heater unit can supplement a primary water heating source or have the role of being the primary water heating source for point-of-use applications.

With a sturdy knob that increases and decreases the temperature in a range of 65 to 145 degrees Fahrenheit, the ES8 model can supply up to three water sources at the same time. 

The Bosch 3000T series are basically tapped into cold water line and mounted directly. Other models under this series include:

  • ES2.5 model – 2.7 gallon mini tank
  • ES4 model – 4 gallon mini tank

Features and Specifications of the Bosch Electric Mini-Tank

  • Knob-type for temperature adjustment – features a knob that turns clockwise and counterclockwise to control temperatures. A clockwise turn will increase the temperature and vice versa. Temperature ranges from 65 to 145 degrees Fahrenheit. 
  • LED indicator – led light beside the knob serves as an indicator when the tank has already reached the set temperature. 
  • Temperature or pressure relief valve – the ES8 model has the relief valve included with the unit only, which needs to be installed by a professional and licensed contractor. During the water heating cycle, the water expands causing pressure inside the water heater to increase. 
  • Floor-standing or wall mounted – the Bosch Tronic 3000T ES8 can be installed as a standalone or wall mounted with mounting brackets included. 
  • Multiple point-of-use applications – applications include powder room, kitchenettes, sinks located far from primary water heater sources, in-law suites.
  • Tank volumes: 7 gallons
  • Heating capacity: 1,440 Watts 
  • Temperature range: 65 to 145 degrees Fahrenheit
  • Recovery rate at 90 degrees Fahrenheit rise: 6.8 GPH
  • Warranty: 6-year limited warranty on unit, 2-year warranty on parts

Pros

  • Compact and lightweight – it fits in any space and can be easily transported
  • CFC-free foam insulation – for maximum energy efficiency performance
  • Glass-lined tank – for the unit’s durability and extended life span
  • Supports multiple placement – wall-mounted or standalone

Cons

  • This model under the 3000T Tronic series is not ideal for large homes. 

Customer Feedback

Majority of the customer say the Bosch Electric Mini-Tank Water Heater Tronic 3000T ES8 lives up to its point-of-use feature, the unit is easy to install and delivers hot water supply in an instant. Some customers even shared how exemplary the model works even after a 10 to 20-minute showers. The ES8 is also rated for its compact design, where it fits mostly under the sink cabinet and even in small, tight spaces.  


4. Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater

The Rheem 240V Heating Chamber RTEX-13 is also an affordable model that offers continuous hot water supply for single point-of-use or multiple applications. It saves up to 99.8% of energy because of its on demand supply of water.

The digital temperature display on this model is LED-powered which makes it easier to spot even if it is dark, especially when installed under the sink. The model is compact and lightweight, that makes it easier to transport from one location to another. 

Features and Specifications of the Rheem 240V Heating Chamber RTEX-13 

  • Digital temperature control – in increments of 1 degree Fahrenheit, the range temperature is between 80 to 140 degrees Fahrenheit. It is an external adjustable digital thermostatic control with LED display. 
  • Copper immersion heating element – the heating element of the Rheem RTEX-13 consist of copper immersed with brass top to increase the durability of the unit. 
  • Multiple application – can be applied to standard hand sink (0.5 GPM), kitchen sink (1-2 GPM), dishwasher (1-2 GPM), washing machine (1-1.5 GPM), water-saving shower head (1.5 GPM) and standard shower head (2.0 GPM).
  • Warranty: 5-year limited warranty

Pros

  • Simple installation – plug-in cable and compression water connections only.
  • For easy replacement, the model’s parts are threaded.
  • Has digital temperature display for easy access in a dark location.

Cons

  • It can be used for large households but supplies to one water source at a time only. For more than one water source use, the flow will be slow. 

Customer Feedback

Few of the customers of the Rheem 240V Heating Chamber RTEX-13 say the model can actually drop the electric billings from 10% up to 30% per month after a similar amount of water supply usage. The advertised 99.8% of energy efficiency is true according to the few customers who shared their experience with the billings dropping. Customers say the model eventually pays for itself. Its durable and stylish design are great additional features alongside its quality and efficient hot water supply.


Best over $400 Tankless Water Heaters

5. EcoSmart ECO 27 Electric Tankless Water Heater

The EcoSmart ECO 27 is designed and created to supply hot water for larger apartments and households with more than 5 members. The water heater model has a digital display that shows the output temperature, that can be adjusted to an increment of 1-degree Fahrenheit.

The EcoSmart ECO 27 is suitable to heat multiple fixtures simultaneously. It is recommended for a whole house or high-flow applications. 

Before choosing an EcoSmart ECO 27 tankless water heater, referring to this chart will help to determine which model best suits the required supply of hot water. Typically, the ECO 27 can supply hot water to two hand sink faucets and one water-saving showerhead all at the same time with 2.7 GPM. Four water-saver showers can also be supplied with hot water at the same time with 6.6 GPM.

Features and Specifications of the EcoSmart ECO 27

  • High-flow application – for standard hand sink, water-saver showerhead, and standard showerhead as well as a bathtub. It is recommended for larger apartments, condominiums, or townhouses that need hot water supply from three different water sources at the same time.
  • Equipped with patented, self-modulating technology – this technology enables the EcoSmart ECO 27 to only consume the energy required for the specific demand. 
  • Digital temperature control the EcoSmart ECO 27 is equipped with digital display with temperature control in increments of 1 degree Fahrenheit, ranging from 80 to 140 degrees Fahrenheit.
  • Copper heating elements – with brass top, the durability of the model is increased, it is also threaded for easy and quick replacement. 
  • Compact and durable – the model is compact but not lightweight, it consumes less space but weighs quite heavier than the ECO 11.
  • Warranty: Limited lifetime warranty for residential use and installed within 30 days of purchase by a licensed professional.
  • Temperature range: 80 to 140 degrees Fahrenheit

Pros

  • ¾-inch NPT water connectors are provided with the unit – for easy flex hose installation.
  • UL-499, ETL listed tankless water heater
  • Stainless steel heat exchanger – for faster heat transfer 
  • Auto-thermal protection – to avoid hazardous thermal issues

Cons

  • Clauses of information on the warranty document can be complex and confusing. 

Customer Feedback

Majority of the customers of the EcoSmart ECO 27 testify to the durability and reliability of the model. To counteract several negative reviews about lights and TV flickering after installation of the model, one user said they must have their wiring connections checked because the EcoSmart ECO 27 provides hot water supply efficiently without interruption. For the most part, customers are delighted that the manufacturer actually cares about its customers, especially when it comes to the models they must purchase. EcoSmart helps determine the right unit for a household depending on their geographical location and inlet water temperature. 


Best Whole House Tankless Water Heaters

6. Stiebel Eltron 224199 Tempra 24 Plus Whole House Tankless Electric Water Heater

The Stiebel Tempra 24 Plus continually monitors incoming water temperature, flow rate of water supply through the heater, as well as the water temperature it produces. All thanks to its German-patented advanced flow control and self-modulation energy feature with smart microprocessor technology.

This tankless water heater is advertised to save up to 15% to 20% of energy consumed. Furthermore, it is tried and tested to operate quietly because of its high-grade electronic parts and reliable body covering, to which both resist vibration. 

Features and Specifications of the Stiebel Eltron 224199 Tempra 24 Plus

  • German patented, advanced flow control – this feature of the Stiebel Tempra 24 Plus works by automatically reducing the water flow slightly. It delivers slightly less water but still at the desired hot temperature. 
  • Self-modulation energy technology – often referred to as the auto-modulation, this technology ensures that only the least amount of energy is used at all times, despite the number of water sources supplied.
  • Smart microprocessor technology – microprocessors of the Stiebel Tempra 24 Plus model have the capacity to sense several water temperature and flow. This technology is created and designed to ensure and allow a steady output temperature even if flow rates fluctuate, especially when one water source is turned on and off at the same time when another water source is being utilized. 
  • Warranty: 7 years against leakage and 3 years against defects in workmanship and materials
  • Maximum hot water temperature: 109 degrees Fahrenheit

Pros

  • Energy saver – reduces up to 15% to 20% of total energy. 
  • Uses solid copper heating chambers and elements.
  • Has preset temperature memory buttons.
  • Minimal water fluctuation – in the case of on and off use of different water sources at the same time.

Cons

  • Unit is quite expensive. 

Customer Feedback

A lot of the customers of Stiebel Eltron 224199 Tempra 24 Plus say the model adjusts brilliantly to sudden temperature changes. It operates quietly because of its sturdy body covering and high-grade electronic parts that eliminates vibration. Despite the many positive reviews on the durability, quiet and efficient operation of the Stiebel Tempra 24 Plus, there are customers that express their dissatisfaction when it comes to the fluctuation of water temperature. Although, the fluctuation and increase in water temperature is not to the point wherein the skin would scald, the change still comes as a surprise to some customers.


Natural Gas Tankless Water Heaters

7. Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless Natural Gas 

With an energy efficiency of 94%, the Rheem RTGH-95DVLN is one of the best choices for outdoor or indoor use that can supply multiple applications up to four sources, all at the same time. For example, this tankless water heater model can supply hot water to two showerheads, a dishwasher, and the laundry machine all at once.

The best part is that the energy consumed is still reduced. 

Features and Specifications of the Rheem RTGH-95DVLN

  • Hot start programming – during back-to-back hot water requirements, the Rheem RTGH-95DVLN remains in a ready-fire state by minimizing cold water bursts. 
  • Low flow activation – hot water is supplied even in low demand situations, with the minimum flow rate is 0.26 GPM and minimum activation flow rate of 0.40 GPM.
  • Recirculation pump kit-ready for faster hot water from the water source all at the same time guaranteed savings up to 12,000 gallons of water in a year.
  • Overheat film wrap – this safety feature prevents any dangerous temperatures. 
  • WiFi-enabled – the EcoNet feature of the Rheem RTGH-95DVLN allows for WiFi-enabled control of the model. By simply connecting to EcoNet mobile app via Tankless EcoNet Accessory Kit, this feature is good to go.
  • Warranty: 12-year limited warranty on heat exchanger for residential use, 5-year heat exchanger for commercial and 5-years parts, 1-year labor.

Pros

  • Has built-in condensate neutralizer.
  • For safety precautions, the model has freeze protection up to -30 degrees Fahrenheit.
  • Operated through a pre-wired digital remote control.
  • Available in both propane and natural gas. 

Cons

  • Initial cost of installation with all the kits to be purchased makes the model quite expensive. 

Customer Feedback

Few of the customers of the Rheem RTGH-95DVLN say the model can fill in an 80 to 100 gallon bathtub with ease and without water temperature fluctuation. Installation was quite easy despite the weight on this model. Apart from that, the majority of the customers say the model is so efficient that it can possibly be used for industrial purposes. The unit produces quite a noise but not noticeable when the shower is on and the laundry is at work. 


8. Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater

The Energy-star certified heater, Rinnai RUC98iN is perfect for indoor residential and commercial use. It is applicable with both propane or natural gas as source of power and has multiple venting options.

Compared to most gas tankless water heaters, Rinnai RUC98iN uses an electric ignition system and draws only 2 Watts in standby mode. When working or during supply, it consumes 64 Watts. This model is considered to be one of the best gas operated tankless water heaters that can efficiently supply hot water with zero operational malfunction.

Features and Specifications of the Rinnai RUC98iN

  • Temperature lock system – this innovative function of the Rinnai RUC98iN is to maintain the same temperature throughout the day’s operation, with a maximum temperature setting of 160 degrees Fahrenheit. 
  • Multiple venting options – venting options include the use of concentric or twin-pipe PVC. 
  • Automatic scale detection – the model can detect areas with scale deposits automatically. This feature helps extend the durability of the model. One of the reasons why tankless water heaters fail, is because of scale build-up. 
  • Energy factor: 0.95 – either natural or propane gas.
  • Temperature range: 95 to 140 degrees Fahrenheit.

Pros

  • Despite the bulky body covering, the model is space-saving due to the flexibility of installation.
  • Multiple venting options – concentric or two-pipe PVC connection.
  • Can be installed in a cinch.
  • Detects scale build-up

Cons

  • Very expensive

Customer Feedback

Efficient, small, accurate temperature control, sufficient supply of hot water – are few of the positive descriptions on the Rinnai RUC98iN. Customers say the model consumes more gas during winter than the warmer climate, but this is given due to the fact that the heater needs to do more work in heating the water because of the inlet water temperature. Majority of the customer say that the model requires once or twice a year maintenance. The unit works efficiently and gives zero headache in terms of the water supply it can produce making it a very worthwhile investment. 


Best Propane Gas Tankless Water Heater

9. Rinnai V65IP 6.6 GPM Indoor Tankless Propane Water Heater

The Rinnai V65IP is ideal for residential and commercial use. It has a maximum flow rate of 6.6 GPM. With its Wi-Fi enabled system, the model can be remotely accessed and controlled. The advanced water flow control of the unit allows for a longer lifespan and reliable supply for hot water for more than three water sources. 

Features and Specifications of the Rinnai V65IP

  • WiFi-capable – the Rinnai V65IP is WiFi-enabled, with the use of a mobile application the model can be controlled for remote monitoring and management. 
  • Advanced water flow control – the model has water flow sensor, electronic water control as well as fixed bypass control. 
  • Built-in gas valve blower – this tankless water heater uses a smaller amount of gas when heating demand is usually lower, it increases gradually as the hot water requirement increases. 
  • Warranty: 5-year warranty on residential heat exchanger, 1-year warranty on labor and 2.5-year warranty on parts. 
  • Temperature range: 98 to 140 degrees Fahrenheit

Pros

  • AHRI-certified propane gas tankless water heater.
  • Has troubleshooting feature to help eliminate unnecessary cause of issue.
  • Low maintenance cost – replaceable parts are not expensive

Cons

  • Expensive initial cost for residential use.

Customer Feedback

Majority of the customers say the Rinnai V65IP works as it is advertised by the manufacturer. It has freeze protection that is suitable for colder climates. Due to this, the model is durable and basically unbreakable. The model is considered one of the favorites, especially when it comes to the category of propane gas. 


 Tankless Water Heater Features

Here is a list of the 5 main features of a tankless water heater. From capacity to supply, maximum energy efficiency, unit endurance, digital displays and warranty. Make sure the tankless water heater you have right now in your cart include all of these. 

1. Capacity to supply

Gas tankless water heaters have the capacity to supply between 2.5 and 11.0 gallons per minute (GPM) of hot water. Electric tankless water heaters offers capacity to supply between 1.0 to 5.0 GPM. Gas or electric powered, tankless water heaters are efficient in terms of running hot water through water source. 

2. Maximum energy efficiency 

Since there is no storage tank to maintain, tankless water heaters consume 80% to 90% less energy. They also cut 10% to 15% of your cost from heating water. This allows you to have running hot water without costing you as much as it would during tank operation.

3. Unit endurance

Tankless water heaters lasts twice as long as other conventional storage type water heaters that can save you from replacement costs. Tanks that are glass-lined reduce corrosion. Tankless water heaters today are made of sturdy materials compared to the materials used on conventional water heaters. Tankless water heaters are designed and created to last longer than most water heaters.

4. Digital displays

Having digital displays is a bonus which means there is no need to worry about rocker switches that get worn out in the long run. A tankless water heater that has digital displays allows you to see readings and the options to control it right in front of you. 

5. Longer-warranty

Most tankless water heaters today offer 5 to 10 years warranty. Some manufacturers are generous when it comes to the warranty given. For 10 years warranty, it is either the manufacturer is confident that there will be no unit defect or they really want to give an awesome customer service after the sale. Be critical on this feature, more doesn’t always mean beneficial.

Advantages and Disadvantages of Tankless Water Heater

The fundamental advantage of having a tankless water heater is there will be no need to maintain 40 to 50 gallons of hot water in a storage tank. Because tankless water heaters continuously heat the water that flows through. Bottom line, less energy is wasted as well as there will be no necessary installation and maintenance of a storage tank.

No matter how many advantages and benefits any home equipment can give, there will inevitably be some disadvantages. Below we’ve gathered the pros and cons of tankless water heaters based on reviews and experiences of customers that previously owned units.

Advantages of Tankless Water Heaters

Tankless water heater advantages include its easy transport due to compact size as well as safe to use and reduced risk of damage thanks to tightly sealed vents. Besides the physical features, tankless water heaters are also swift to drain, continuous water flow and consume less energy.

1. Compact

Standard-sized tankless water heaters are typically the size of a small suitcase. They’re compact, they hang on the wall and do not consume so much space. Because tankless water heaters are compact, they can be easily transported from one location to another. 

2. Safe To Use

In case of backdrafting, there will be no chance for carbon monoxide leak because the air-supply and exhaust vents are tightly sealed. In the event of a water leakage. Tankless water heaters won’t flood your basement or home with gallons and gallons of water compared to water heater tanks that can leak and eventually burst out water.

3. Quick To Winterize

Tankless water heaters take little time to drain. You merely need a hose and heavy water pressure. Typically, a 50-gallon tank fully drains after 6 minutes if the water pressure is within the range of 9 to 17 GPM. 

4. Continuous Hot Water Flow

Basically, a tankless water heater heats water as it flows through the unit, there will be no need for you to wait for water to get hot in tanks. With tankless water heaters, you can supply water to a huge hot tub or any large container. 

5. Energy-saving

Often called an on-demand water heating devices, tankless water heaters only heat whatever necessary amount of water is needed at the moment. They use about 30% to 50% less energy relative to traditional tank heating units. 

Disadvantages of Tankless Water Heaters

No matter how perfect any home equipment is designed and created, there will be certain situations wherein it is not the best fit for the task. There are only two major disadvantages; 

1. Not Enough Water Supply For Large Households

Here is where supply will not be able to meet the demand. Despite the continuous flow of hot water, some tankless water tanks, nevertheless, can’t produce and provide enough hot water for simultaneous use. Say, you are washing the dishes and at the same time a family member is also taking a shower, then chances are water flow will be slower. This is most true for a standard-sized tankless water heater. 

2. Upfront costs

Tankless water heater units require a special sealed vent system. A tankless water heater is guaranteed to pay for itself after a couple of years because of stable hot water supply and long life span of the unit but initial costs can be expensive more so for propane and natural gas water heaters which require complex connections to gas lines. 


Final Thoughts

Tankless water heaters are the preferred heating devices of choice and smart investments for homes or commercial premises that require instant hot water just at the turn of a tap. They are small and compact water heating units that offer long term reliability by supplying you with an endless supply of water effectively and energy efficiently.

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