Last updated: 16/10/2022

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A boiler is a closed vessel in which water or other liquid is heated. The heat may be supplied by fuel, electricity, solar energy (as used for central heating), etc.

Boiler: Bestsellers and current offers in the UK

The best boiler in the UK: Our selection

Boiler: Frequently asked questions

What types of Boiler are there and what determines a good product?

There are many types of boilers, but they can be categorized into two main groups. The first group is the forced-draft (FD) boiler and the second one is the induced-draft (ID). Both have their own advantages and disadvantages that make them suitable for different applications.

A good boiler is one that can produce steam at a pressure and temperature suitable for the process. The amount of heat required to raise water from its initial state (at atmospheric pressure) to boiling point depends on the volume of water being boiled, as well as other factors such as altitude above sea level or ambient air temperature. In general terms, it takes about 1 BTU/lb-mole (1 Btu = 1055 joules) to convert liquid into vapor at 100°C if no energy losses occur in heating up the vessel containing this fluid; however, because some energy will be lost due to convection and radiation between the hot surface of a container holding liquid and its contents, only part of this quantity will actually appear in an increase in enthalpy when all molecules have been converted into gas. For example: If we are dealing with 1000 lb moles H2O then it would take approximately 2 x 105 Btus per pound mole (=2000 kJ/kg mol), since each molecule contains two hydrogen atoms which weigh 16 g each plus oxygen weighing 32 g giving us 64g +16g+32g=100 grams total weight per molecule so 2000kJ /(100grams)=200

Who should use a Boiler?

Anyone who wants to save money. Boilers are ideal for people with high water usage, such as families or businesses that use a lot of hot water. They can also be used in areas where the temperature is below 55 degrees F (13 C).

Based on what criteria should you buy a Boiler?

The first thing to consider is the size of your home. If you live in a large house, then it would be better if you buy a boiler that has enough capacity and power to heat up all rooms at once. However, if you are living in an apartment or small house, then buying a smaller unit will do just fine for heating purposes. Another factor to take into consideration when purchasing boilers is their efficiency ratings as well as energy consumption rates since these factors can determine how much money they will cost over time. You should also check out what kind of warranty comes with each model so that any issues arising from faulty parts can easily be addressed by manufacturers without having to spend extra cash on repairs later on down the road.

The most important thing is to make sure that the Boiler you are looking at has a good warranty. If it doesn’t have one, then there is no point in even considering buying it. Another factor to consider would be whether or not the boiler can heat your water as well as provide hot water for showers and baths. You should also look out for boilers with an A+ rating – this means they will use less energy than other models on the market so you save money on bills too.

What are the advantages and disadvantages of a Boiler?


The main advantage of a boiler is that it can be used to generate steam for heating, as well as hot water. This means you will not need a separate heater and water tank in your home or office space. Boilers are also more efficient than other types of heaters because they use less energy when generating the same amount of heat. They do this by using an indirect method called “condensing” which allows them to capture the latent heat from their exhaust gases and reuse it again later on during combustion.


The main disadvantage of a boiler is that it takes time to heat up. This means you need more energy and money to get the water hot enough for use, especially if you are using cold tap water. Another problem with boilers is they can be noisy when in operation.

Shopping Guide: Everything you need to know

Which brands and manufacturers are represented in our review?

In our review, we present products from various manufacturers and suppliers. The list includes products from the following brands and manufacturers, among others:

  • Burco
  • Buffalo

What is the price range of the featured products?

The cheapest Boiler in our review costs around 3 pounds and is ideal for customers who are conscious about their money. However, those who are willing to spend more money for better quality can also spend around 120 pounds for one of the more expensive products.