The best gas water heaters in the UK 2023

Looking for a more economical but reliable water heating solution? Investing in a gas water heater is the best option for you. Whether it's propane, butane, natural gas or liquefied petroleum gas (LPG), the range of products is quite vast and can leave you spoilt for choice. But fortunately, our buying guide is here to help you choose the best possible investment.

Saunier Duval Opalia C - 11 L LPG gas water heater 1
8/10

Editor's Choice

Saunier Duval Opalia C - 11 L LPG gas water heater

Best gas water heater in 2021

For a model with an excellent quality/price ratio, both efficient, economical and less polluting, choose this product from the Hermann Saunier Duval brand with a flow rate of 11 liters, running on LPG.

208 £ on amazon

If you want to enjoy all the benefits of a LPG water heater at a very fair price, this 11 L/min Hermann Saunier Duval model is an excellent product. It combines a remarkable performance with an eco-responsible use and a low gas consumption. Belonging to the Opalia C range, this product is particularly well known for its reliability, its very compact and high quality design as well as its ease of use. And it heats your water up to 60°C from 0.2 bars.

But this Saunier Duval model has other additional advantages. It complies with the ERP standard, which makes it both sanitary and environmentally friendly, with very low NOx emissions. In terms of safety, this model has nothing to be ashamed of compared to its counterparts using other types of gas. For proof, it is designed with a safety thermostat that eliminates the risk of overheating, an automatic lockout in case of absence of flames and a mechanism that prevents the evacuation of smoke into the environment.

Camplux - 5 L propane gas water heater 2
8/10

Inexpensive

Camplux - 5 L propane gas water heater

Best entry-level gas water heater

An excellent product with a flow rate of 5 liters for outdoor use, this model has a high performance and a shower kit for easy use.

159 £ on amazon

The Camplux outdoor model with a flow rate of 5 liters per minute is undoubtedly the best choice if you want to have hot water while camping. Easily portable, due to its compact design and folding handle, it performs more than well even at a pressure of 0.17 bar. The water temperature can reach 46°C and the maximum power is 10.13 kW, which is quite a feat considering the price and flow rate offered.

The safety of use is also among the strong points of this Camplux equipment. In addition to flame failure protection, this model also has oxygen cut-off, freeze protection and an overheating protection device. And the safety mechanism is automatically triggered after 20 minutes. Other features include a complete shower head kit, a pressure gas regulator with a 1.50 meter hose and mounting fittings to simplify installation.

Vaillant Atmomag 10022573 - 14 L LPG water heater 3
9/10

Best in the business

Vaillant Atmomag 10022573 - 14 L LPG water heater

Best high-end gas water heater

The best open camera product running on LPG, very ecological, with a high operating flow rate of 14 liters per minute.

290 £ on amazon

As one of the leading brands in the water heater segment, Vaillant has developed this excellent product with a flow rate of 14 liters per minute to meet all the family's water needs. The Vaillant Atmomag natural draft model runs on Liquefied Petroleum Gas (LPG), classified as Class 6, and generates very low NOx emissions. It is also equipped with an automatic modulation of the flame which regulates the consumption according to the real needs of the users.

If the efficiency is there, this equipment also has a control system of the gas arrival combined with a flame detection with ionization, to guarantee your safety. User comfort and safety are the hallmarks of Vaillant Atmomag models and this appliance is no exception. The 10022573 model has an electronic battery ignition and is small enough to be easily installed indoors.

TTulpe B11 P37 Eco - butane/propane gas water heater 11 L 4
9/10

Excellent

TTulpe B11 P37 Eco - butane/propane gas water heater 11 L

Performing

This TTulpe B11 P37 Eco indoor gas water heater is powerful and has energy saving operation. It is equipped with all the necessary devices to provide you with hot water in complete safety.

250 £ on Amazon

Ideal for indoor installation, the new TTulpe Indoor B11 P37 Eco delivers 11 liters of hot water per minute. It is an open modulating propane water heater. This means that a self-modulating valve controls the amount of energy needed to heat the water, resulting in significant energy savings. And you can choose a mode that uses even less energy in the warmer months.

Another great feature is that the water jet is triggered at a water pressure of 0.2 bar. The automatic switch-on is battery-operated and is activated as soon as the water flows into the device. No electrical connection is required and the device is very easy to install. Please note that the water and gas connections should be made with a ½ inch thread.

Structio international - chauffe-eau à gaz propane 10 L 5
8/10

Inexpensive alternative

Structio international - chauffe-eau à gaz propane 10 L

Good value

Made primarily of stainless steel, the Structio International gas water heater is a tankless model that stands out for its sturdiness, ease of use and portability.

159 £ on Amazon
Buying guide • November 2023

Best gas water heater

Any specific needs?

Best gas water heater in 2021

Best entry-level gas water heater

Best high-end gas water heater

Performing

Good value

Your guide : Samuel

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Comparison table of the best gas water heaters

THE BEST CHEAP HIGH END EXCELLENT CHEAP ALTERNATIVE
Saunier Duval Opalia C - 11 L LPG gas water heater 6
8/10
Camplux - 5 L propane gas water heater 7
8/10
Vaillant Atmomag 10022573 - 14 L LPG water heater 8
9/10
TTulpe B11 P37 Eco - butane/propane gas water heater 11 L 9
9/10
Structio international - chauffe-eau à gaz propane 10 L 10
8/10
OUR SELECTION
Saunier Duval Opalia C - 11 L LPG gas water heater
Camplux - 5 L propane gas water heater
Vaillant Atmomag 10022573 - 14 L LPG water heater
TTulpe B11 P37 Eco - butane/propane gas water heater 11 L
Structio international - chauffe-eau à gaz propane 10 L
For a model with an excellent quality/price ratio, both efficient, economical and less polluting, choose this product from the Hermann Saunier Duval brand with a flow rate of 11 liters, running on LPG.
An excellent product with a flow rate of 5 liters for outdoor use, this model has a high performance and a shower kit for easy use.
The best open camera product running on LPG, very ecological, with a high operating flow rate of 14 liters per minute.
This TTulpe B11 P37 Eco indoor gas water heater is powerful and has energy saving operation. It is equipped with all the necessary devices to provide you with hot water in complete safety.
Made primarily of stainless steel, the Structio International gas water heater is a tankless model that stands out for its sturdiness, ease of use and portability.
Type of gas
LPG
Propane
LPG
Butane, propane, LPG
Propane
Type of use
Indoor
Outdoor
Indoor
Indoor
Outdoor
Hot water flow rate
11 L/min
5 L/min
14 L/min
11 L/minute
10 L/minute
Maximum output
19.6 kW
10.13 kW
23.1 kW
19.3 kW
20 kW
Product dimensions
25 x 35 x 50 cm
37.59 x 29.01 x 11 cm
50 x 30 x 30 cm
31 x 60 x 25 cm
39 x 64 x 20 cm
Safety of use

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Buying guide - gas water heater

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How to choose your gas water heater

#1 - Your water needs

Before purchasing a gas water heater, you should first determine your water needs. This will help you determine which model is best for you.

To find out your water needs, you need to take into account the number of people living in the house and the lifestyle of each person, especially if each person showers in the house every day...

This will allow you to know the type of gas water heater you need, the capacity of the hot water tank, the flow rate required for your appliance, etc. Obviously, a couple without children does not have the same hot water needs as a couple with three children. In all cases, models that comply with European standards are recommended.

#2 - The type

After

determining your water needs, you have two options: opt for an instantaneous or storage water heater. The former is suitable for a small household. The particularity of this model is that it heats the water instantly thanks to the tap system that runs through the burner. To benefit from unlimited hot water, this model is an excellent choice. Moreover, it is compact and ergonomic.

The second model, on the other hand, is recommended if you have several showers and use large volumes of hot water. Suitable for a large household, the gas storage water heater is equipped with a hot water tank. It is designed to heat and store water. You can heat the water stored in the tank several times a day. In terms of installation, however, the distance between the appliance and the tap should not exceed 10 meters.

#3 - The flow

As

the flow rate differs according to the appliance, it is imperative to choose the one adapted to your needs. An instantaneous gas water heater with a minimum flow rate of 15 liters is recommended for a household of more than 3 people. For larger families, a storage model with a tank capacity of approximately 150 L is much better.

How does a gas water heater work?

As the name implies, a gas water heater produces hot water by burning a gas. It can be fueled by town gas or natural gas that comes from your distribution network. But it can also be propane in bottle or butane. A gas-fired tankless water heater provides an unlimited amount of hot water. Basically, cold water flows through a coil inside the tank. It is heated by a burner. Then it comes out of the tap at the desired temperature.

The operating principle of the storage water heater is similar to that of the electric model. However, the heating element is a burner. The water is heated inside the tank and then replaced by cold water once used. The temperature can be controlled with a thermostat. The device heats the water until it reaches 60 to 65°C. In effect, the gas cumulus works like a tank.

To increase the longevity of your gas water heater, but especially for a good functioning, you must regularly call a professional to make a control. In addition, a cleaning, more precisely, a descaling is necessary because the important presence of tartar or lime scale can damage your tool. This is very important to preserve your device.

However, you must make sure that you are safe before using your device. To do this, turn off the water heater at the electrical system to avoid an electrical short circuit. In case you hear noise from your gas water heater, don't hesitate to call a repairman to solve the problem at the right time.

Electric or gas water heater?

Electric water heater

The electric water heater accumulates the amount of hot water needed during the day. In other words, it does not heat the water continuously. It is easier to install because it only needs to be wired and well protected. This means that you can install this device almost anywhere in your home. You no longer have to worry about its proximity to the pipe, unlike the gas model. The thermostat that makes it up allows you to adjust the water temperature at different levels and at any time.

The electric water heater also has safety features to prevent combustion even if the tank is empty. However, the disadvantage of an electric water heater is that it takes longer to reach the right temperature. This creates bacteria in the tank. Also, if you don't place it in a well-ventilated area, it can cause energy loss because it increases the heating time.

Gas water heaters

It is a fast heating system, powered by propane or butane gas. The gas water heater directly heats the water in its tank and replaces it when it is emptied, thanks to its thermostat that controls the water temperature. It works twice as fast as the electric models. It is especially practical if you want continuous hot water. It is quick and easy to install, especially if you already have a gas line.

On the other hand, it should be noted that the gas water heater requires more maintenance. Its installation is not a cup of tea for everyone, because it needs the intervention of a specialist. On the other hand, it is less respectful of the environment because its process releases a significant amount of greenhouse gases.

Verdict

Both electric and gas water heaters are very useful and practical. The gas model is advantageous because it heats water twice as fast. However, the electric type is more compact and more energy efficient.

Why buy a good gas water heater?

More economical than an electric model

The advantages remain the same, regardless of the type of gas water heater used: economy and profitability. Whether you choose an instantaneous or storage model, a model that uses natural gas, butane or propane, or a model that evacuates smoke through a ventouse or chimney, you will benefit from an excellent investment over the long term.

They may be a little more expensive to buy than electric models, but they are much more economical and the cost is amortized over the long term. Note that an instantaneous production model has a life span twice as long as a conventional water heater and generates very little energy loss.

Their installation does not require a heavy expense and they require very little maintenance. Replacing the valve once every ten years is sufficient. In addition, you will benefit from a much higher energy efficiency, especially if you install the device within 10 meters of the tap.

Works in the event of a power failure

There's nothing more annoying than showering with cold water when the power goes out. To avoid this, gas water heaters are a great alternative because they work even when the power goes out. They do not depend on electricity and this is a significant advantage.

Financial aid

You can benefit from financial aid by installing a gas water heater as part of a new construction or to replace your old appliance. If your water heater is part of a better energy performance, among others if it is integrated with a condensing boiler, you can benefit from a zero rate eco-loan, a 5.5% VAT reduction or a tax credit.

Some regions grant a bonus for the installation of a natural gas water heater. Note that this type of water heater can be independent or integrated into a gas boiler.

The best brands of gas water heaters

In our opinion, the best brands of gas water heaters in 2022 are :

Hermann
TTulpe
Camplux
e.l.m leblanc
Vaillant

Hermann Saunier Duval offers a complete range of products for heating, domestic hot water and renewable energy. This brand offers quality and performance while considering the needs of the consumer

TTulpe® is a Dutch quality brand for high-tech water heaters. Its passion for improving water heaters has resulted in modern, safe, environmentally friendly and affordable water heaters. In addition to quality, sturdiness is also the adjective that describes the products of this brand.

Portability, energy saving and innovation are the three key elements of Camplux outdoor products. The Camplux range is constantly expanding, so concerned about the quality and innovation of the products. This brand is best known for offering comfort products for outdoor living, which is why it is the best brand.

Founded in 1932, this brand specializes in the construction of individual gas boilers and water heaters. This French brand offers the best quality and performance in a product. This is to make everyday life easier and to meet the needs of consumers.

This German brand equals the big brands in the field of individual gas boilers and water heaters. Its products are robust and of a quality that satisfies consumers. This brand has been in existence for over 140 years and continues to innovate and bring products in line with the evolution of technology.

What is the price for a gas water heater

The diagram below will help you to get an idea of the typical prices for each price range (entry-level, mid-range and high-end).

However, more expensive does not necessarily mean better.

We therefore advise you to always consult our ranking before deciding, rather than blindly relying on price ranges.

Entry-level
150 £ to 200 £
Mid-range
200 £ to 250 £
High-end
more than 250 £
Price range diagram

Tips

Install your gas water heater properly

The location of your gas water heater will depend mainly on the type of appliance. An instantaneous water heater must be placed in a naturally ventilated room, for health and safety reasons. A storage water heater, on the other hand, can be placed anywhere. Also, since it is often quite heavy, it is preferable to complement it with a base.

Descale it regularly

You can descale your appliance yourself. To do so, start by disassembling the heating element. Then pour descaler into a coil and let it work, respecting the time indicated on the product. After rinsing the water system, all you have to do is turn on the gas boiler and the cold water supply.

Drain your gas water heater

First turn off the appliance and close the gas valve. Then turn off its cold water faucet and open the hot water faucets in the home. If your water heater is not equipped with a siphon, attach a garden hose to the drain valve and start the operation. When the water stops flowing from the hose, consider tipping the tank slightly to drain it completely.

Opt for a solar hybrid boiler

A solar hybrid boiler or solar combo system is a water heater made up of two heating systems, one of which uses fuel and the other solar energy. This is a very economical option, providing you with free hot water for much of the year when the sun is kind.

Use an electric kettle to get hot water

If your gas water heater has a breakdown and you don't want to wash with cold water, this is the solution for you. An electric kettle has a capacity of 1.5 to 2 liters, and it boils water in just a few minutes. So, depending on your needs, you can heat water as many times as you want, without wasting time.

FAQ

Do gas water heaters require maintenance?

Water heaters often work perfectly for a decade or more without any care, so it's easy to neglect them. Yet a few minutes of maintenance once a year is all it takes to extend the life of the tank and keep your water heater efficient and safe. So, yes, it's best to (have) your water heater serviced regularly.

How much hot water will a gas water heater produce per hour?

The hot water output per hour of a gas-fired water heater depends on the temperature of your ground water and the degree of temperature rise you require. As a general rule, a standard residential gas water heater will produce about 35 to 45 litres per hour of hot water. High-flow gas models will provide about 50 to 60 GPH.

What is the most common problem with gas water heaters?

A water tank that produces too little hot water is one of many common water heater problems you may encounter. Usually, this can be solved by raising the temperature on the tank thermostat. Be careful not to raise the temperature too high, however, as this can be a scald hazard. No hot water.

How can you guarantee the longevity of your gas water heater?

A gas water heater is a big investment. With a little care and routine maintenance, you can extend the life of this appliance. Flush your water heater at least once a year to remove sediment and debris that contribute to rust. This will help keep it working at its best for many years.

Sources

Note: Below are some of the sources we have consulted in writing this article. Links to other sites are not continuously updated. It is therefore possible that a link may not be found. Please use a search engine to find the desired information.
  1. , quechoisir.org
  2. , consumerreports.org
  3. , consumersearch.com
  4. , bestreviews.com
  5. , angieslist.com
  6. , consumeraffairs.com
  7. , thespruce.com
  8. , toptenreviews.com
  9. , lesentimentparfait.fr
  10. , atlantic.fr
  11. , leroymerlin.fr
  12. , amazon.co.uk
  13. , bricodepot.fr
  14. , manomano.fr
  15. , m-habitat.fr
  16. , chauffe-eau.ooreka.fr
  17. , cedeo.fr
  18. , manomano.fr
  19. , cdiscount.com
  20. , electroplanet.ma
  21. , castorama.fr
  22. , bricolage.linternaute.com
  23. , vaillant.be
  24. , darty.com
  25. , castorama.fr
  26. , proxiserve.fr
  27. , amazon.co.uk
  28. , ebay.fr
  29. , materiel.hellopro.fr
  30. , energir.com
See more

Updates

March 2022 : Translation of this buying guide from our partner meilleurtest.fr

See more
Our selection
Saunier Duval Opalia C - 11 L LPG gas water heater 11
Saunier Duval Opalia C - 11 L LPG gas water heater
Camplux - 5 L propane gas water heater 12
Camplux - 5 L propane gas water heater
Vaillant Atmomag 10022573 - 14 L LPG water heater 13
Vaillant Atmomag 10022573 - 14 L LPG water heater
TTulpe B11 P37 Eco - butane/propane gas water heater 11 L 14
TTulpe B11 P37 Eco - butane/propane gas water heater 11 L
Structio international - chauffe-eau à gaz propane 10 L 15
Structio international - chauffe-eau à gaz propane 10 L

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