Best tankless water heater 2022

Which is the best tankless water heater in the UK?

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The 10 best tankless water heaters to buy in the UK

The top 10 list of the best tankless water heaters lists various brands and prices

Review10Best compares the best tankless water heaters in the UK and selects the one by EUNEWR as the best tankless water heater. In a tankless water heater buying guide, you can read more about the features of the different tankless water heaters and see a recommendation on which tankless water heater to buy in the UK in 2022. By considering the top list of tankless water heaters, you can find the best tankless water heaters and save time shopping online.


Table of contents

  1. Read the ultimate tankless water heater buying guide
  2. View the tankless water heater picks and see how they rank in the top list

SEE THE TOP 10 LIST →
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Best tankless water heaters: A complete buying guide

All you need to know before buying a great tankless water heater

Picture of a tankless water heater

Finding the best tankless water heater system for your home can help save a lot of money in energy bills, although knowing what to look for in a heating system can be challenging for anyone that isn’t a plumber. Given the cost of paying for a new heating system, you will want to put a lot of thought and consideration into your decision, which is not always easy if you are unfamiliar with what a tankless water heater is and how to choose the right one for your home.

To help with this, we have created a handy buying guide that covers all the information that you need to know to find the best tankless water heaters for your home.

What are tankless water heaters?

As the name suggests, a tankless water heater is a type of water heating system that does not use a large water tank to store heated water. Instead, cold water passes through a pipe and into the heating unit, which uses either a gas burner or electric element to instantly heat the water. Whenever you turn on hot water, you instantly get a constant supply as there is no need to wait for a tank to fill with heated water. Therefore, a good tankless water heater makes hot water very convenient and energy-efficient.

Why should you buy a good tankless water heater?

One of the major benefits of using tankless water heaters is reduced energy consumption. Because there is no tank to fill and store with hot water, it can help to reduce water heating bills. Furthermore, while the initial cost of installation is higher than a tanked water heater, the best tankless water heaters are much more durable so will last significantly longer. This means you can save money over the long term, making it a fantastic investment for many homeowners.

Another picture of a tankless water heater
How to choose the right tankless water heater?

Choosing a new tankless water heater can be daunting for those unfamiliar with water heating systems. So here are some things to consider that can make the process easier:

  • Hot Water Consumption: You need to determine how much hot water you consume daily so that you can select a tankless water heater that meets the demand. Simply list all the fixtures in your home that use hot water at any time (e.g. faucet, shower head, dishwasher) and combine their flow rates. To check flow rate, simply refer to the manufacturer instructions for any fixture you’ve bought or check online for a rough estimate of each fixture.
  • Temperature Rise: This refers to the temperature that the heater uses to warm incoming water to the desired temperature. To calculate, you need to determine the average temperature of incoming water and subtract from the desired incoming temperature.
  • Power Source: A tankless water heater is either gas-powered or electric, so consider which is best for your needs. Electric is suitable for smaller water heaters designed for point of use (e.g. heating water for just the shower), while gas-powered water heaters are best for an entire household’s water heating.
What is the best kind of tankless water heater in the UK?

There are two main types of tankless water heaters available to buy:

  • Gas-powered Tankless Water Heaters: Gas-powered systems are more powered and the most used, being the best tankless water heater for an entire household. However, you need to ensure that appropriate piping is in place and consider its location relative to where the heater will go, otherwise extensive installation work may be necessary.
  • Electric Tankless Water Heaters: Electrically powered systems are only recommended for point of use rather than a whole household, as it puts too much strain on the electrical supply when forced to heat too much water. It is more affordable to install, however.
…are you ready for the best picks of 2022?

Top 10 list of tankless water heaters in the UK (January 2022)

The bestseller list compares brands and their tankless water heaters. Which tankless water heater is the best?
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Best choice* TOP 1
Image of EUNEWR TP01144-WML tankless water heater
Mini Electric Water Heater, 3000W Instant Tankless Hot Water Heater with LCD Display, Under Sink Water Heater for Kitchen Bathroom Washing (Black)*
  • LCD Digital DisplayThe temperature sensor transmits the temperature in real time,…
  • Easy InstallationThe package includes an installation manual and it is very easy…
  • Safe and DurableThis instant water heater is made of high quality stainless steel…
BUY NOW*
TOP 2
Image of CAMPLUX ENJOY OUTDOOR LIFE BW422 tankless water heater
Camplux BW422 16L Tankless Propane Gas Hot Water Heater Portable Instant Camping Gas Shower Outdoor*
  • MULTIPLE APPLICATIONS - Elegant design and sturdy structure, perfect for domestic…
  • EASY TO INSTALL & USE - Compact and lightweight design for easy carrying whenever…
  • MULTIPLE PROTECTION - Flame failure protection, overheat protection, oxygen depletion…
BUY NOW*
Offer* TOP 3
Image of Zerodis Zerodisuqnb9phyz3 tankless water heater
Electric Instant Water Heaters, 6500W Thermostatic Tankless Water Heater Fast Hot Intelligent Touch Control Geyser Thin Bath Machine with LCD Backlight for Household Shower*
  • Practical & Easy & Quick InstallationOnly 65mm thickness, silent operation,…
  • Decentralized SystemInstalled directly at the point-of-use, avoiding water wasted…
  • Exceptionally DurationBuilt in high quality PVC engineering materials, tempered glass…
BUY NOW*
TOP 4
Image of thermomate ELEX5.5 tankless water heater
Thermomate ELEX5.5 Instant Electric Water Heater with Backlit LED Display, 5.5kW Tankless Hand Wash for Basins Sinks, Over/Under Sink Installation*
  • TWO INSTALLATION APPLICATIONS OPTIONAL- Functional for both over sink and under sink…
  • EXCEPTIONALLY DURATION- Built in high quality alloy bare heating element, it is corrosion-resistant…
  • CONCEALED AUTOMATIC ROTATION LED DISPLAY- Features a new upgrade concealed automatic…
BUY NOW*
TOP 5
Image of ThermaQ Elite Touch tankless water heater
Elite Touch Instant Electric Water Heater Multi-Point or Single-Point Undersink Oversink Tankless Istantaneous (7kW)*
  • Perfect for Shower, bath or tap outlets
  • Suitable for Bathroom, Kitchen, Washroom, handwash or Utility
  • Overheat and dry run safety protection
BUY NOW*
TOP 6
Image of Unknown 222385 tankless water heater
Aeg PinControl 222385 Hydraulic Tankless Water Heater Dogs Carrier Bag, 222385*
  • Pressure controlled safety device
  • 4 output stages-2 can be selected manually, 2 switched hydraulically
  • Hydraulic instantaneous water heater with mechanical function for maintaining constant…
BUY NOW*
TOP 7
Image of CAMPLUX ENJOY OUTDOOR LIFE AY132 tankless water heater
Camplux AY132 Tankless Propane Gas Water Heater White 5L*
  • PLEASE NOTICE - We provide a 37mbar CE approved gas regulator (in red) for quick…
  • EASY TO INSTALL & USE- The portable water heater is equipped with a folding handle…
  • MULTIPLE PROTECTION- Flame failure protection, overheat protection, oxygen depletion…
BUY NOW*
TOP 8
Image of WMLBK  tankless water heater
220V Mixer Tap Instant Tankless Electric Hot Water Heater Faucet with Stainless Steel Heating Tube Colorful LED and Real-time Temperature Display for Home Kitchen Bathroom Sink (Silver)*
  • AFTER SALE SERVICEWe guarantee a good after sale service. If there is anything wrong…
  • Easy to Install and Use Note: Adapter needed.You could intall this faucet without…
  • Safe to UseThis electric tap adopts the water area and the circuit area separation…
BUY NOW*
TOP 9
Image of Haofy  tankless water heater
Mini Electric Water Heater, 3000W Tankless Instant Hot Water Heater Boiler with LCD Display, Under Sink Basin, Auto Power Off Shower Hot Water System for Kitchen Bathroom Washing (White)*
  • Energy conservation saves water waiting for hot water to reach the tap, reduces heat…
  • Constant temperature This electric temperature control device guarantees a constant…
  • Ensure safety Built-in leakage protection device. It turns off automatically due…
BUY NOW*
TOP 10
Image of CAMPLUX BW158C tankless water heater
Camplux BW158C CE Certified GAR Standard Tankless Gas Water Heater with Rain Cap, 6L Outdoor Instant Gas Shower for Horse Camping RV Trip*
  • EASY TO OPERATE - Heat is easy to adjust via water knob and gas knob. LED temperature…
  • LIGHTWEIGHT COMPACT DESIGN- Camplux 6L gas shower comes with most of the necessary…
  • WEATHERPROOF RAIN CAP- Equipped with a rain cap, this CE certified gas boiler is…
BUY NOW*
Affiliate Disclosure

* We participate in the Amazon Associates Program. As an Amazon Associate we earn from qualifying purchases. For the list of the best tankless water heaters, we consider only products that are available on Amazon while the ranking is based on factors such as customer reviews, number of sales and keyword. It is not a tankless water heater test. Last Update: 2022/01/23.