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Last updated: 18 September 2019

3 Most Important Factors When Buying a Boiler

What Influences Your Choice of a New Boiler?

The placement of the boiler within your home, the technology and fuel type you choose, as well as how state-of-the-art boiler you would like all have an impact on your decision making. With a variety of options to choose from, getting the right boiler for your home might prove a puzzling task.

 It is important to take into account your household needs, like how much heating capacity is required in order to ensure a comfortable environment for everyday life, so that you can reduce your new boiler costs.

By doing so, you’ll be able to select the best boiler to buy that will entirely meet these needs. It is equally important to consult with sales and installation specialists before purchasing a boiler appliance.

Ready to move forward with your choice of a new boiler? Fill in the contact form above and we will provide you with up to 4 free quotes from our reputable partner suppliers, free of charge and with no obligations.

What Will You Learn about Boilers?

Floor Standing or Wall Mounted Boilers

Most of the modern boilers intended for single-family homes are designed to be mounted on walls. Exceptions exist for boilers that come with integrated high volume pressure tanks, as well as for boilers with high electric power capacity (more than 30 kW), although small power boilers can also be designed as floor standing.

Floor Standing Boilers

Typically, a floor standing boiler (also known as a free-standing boiler or a floor mounted boiler) is a more advanced version of a wall mounted boiler, as they often offer higher heating capacity and, as a result, higher electricity consumption. If the boiler capacity exceeds the 100 litres limit, then its size and weight make it impossible to be hung on the wall.

Its superiority over the wall mounted boiler is subject to its ability to provide large quantities of hot water, since it has an integrated high capacity water heater.

A 'floor boiler' usually resembles a refrigerator, in that the shape and size look similar, thus, it can be easily installed in a specially designed closet, boiler room, or workshop. A system like this would not ruin your room’s decor, whereas most of the connecting pipes and fittings are hidden under one big case.

Boiler _room _fittings

Wall Mounted Boilers

The immediate benefits of these boilers are their small size and lower price. Even if it looks like a small hinged cupboard, it is a fully functional boiler system, equipped with an expansion tank, safety valve, and a water circulation pump. Thus, a wall mounted boiler would perfectly fit a small house or apartment in which there is no place or need for the installation of larger equipment.

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Condensing or Non-Condensing Boilers

It is important to know the difference between condensing vs non-condensing boilers. By burning fuel, conventional boilers cannot take full advantage of the energy capacity a fossil fuel like gas or oil has to offer. A significant amount of heat, dubbed 'latent heat', is being wasted along with the water vapour that is pushed up the chimney together with combustion products.

In order to use the boiler’s latent heat, it is necessary to trigger the process of water vapour condensation by cooling down the exhaust gases. Only condensing boilers are capable of achieving the required level of condensation that will result in additional heating capacity being generated.

As a result, the efficiency rate of a condensing boiler is about 10-11% higher. Consequently, condensing boilers consume less fuel for producing the same amount of heat and, therefore, will make the heating of your house significantly cheaper.

If you have a newer boiler, it is most likely to be condensing. However, if you would like to replace an old boiler, choosing a condensing boiler is a must, as from 1st April 2005 gas boilers and from 1st April 2007 oil boilers in the UK are required by law to be condensing.

Thermostats _collage

Boilers with Manual or Automatic Control

Gas boilers require little maintenance. After mounting and installing the required fittings, both single- and double-circuit, condensing and non-condensing boilers can be operated without direct human involvement.

Boiler Service

According to the Ofgem’s regulatory framework, before the onset of the next heating season, boilers should be subject to a thorough verification process conducted by a certified specialist.

During inspection, the boiler and its elements are cleaned and tested for proper functioning. The gas exhausting system and the boiler chimney are checked and cleaned as well. Proper functioning will reduce boiler maintenance costs in the long run.


For operating a boiler in a cost-efficient and comfortable manner, a temperature controller is required.

The most common method for adjusting the a boiler is using a mechanical thermostat. Its immediate role is to constantly monitor the room's temperature levels, based on which it will turn on or off the boiler until the owner’s desired temperature levels are reached.

Still, for people who are looking to obtain greater flexibility and autonomy when operating a boiler, a self-programmed thermostat with a number of boiler management functions will better serve this goal. It will automatically set the temperature levels according to the time of the day, taking into account the homeowner’s heating preferences and whether somebody is at home or not.

A more precise temperature control is provided by weather thermostats that have integrated outdoor temperature sensors. Depending on the outside weather conditions, these thermostats adjust the boiler’s coolant temperature. In doing so, the thermostats are able to sustain the highest efficiency rate of the boiler, and deliver a cost-efficient heating solution.

The Best Boilers Suppliers in the UK

If you have decided to purchase a boiler, but you are not sure whether to choose a floor standing boiler or a wall mounted one, condensing or combi-boiler, we are ready to help you. A boiler is a great option for alternative heating systems, and can be a cost and energy efficient solution for your home.

Fill in the form above with your personal preferences and details, and we will provide you with up to 4 quotes from different suppliers of boilers. You are free to choose the offer that best suits your needs. The service is free and without obligation, and takes only a few minutes.

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