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Boiler Types

When you’re looking at the different types of boiler on the market, be it gas boilers, or combi boilers for example, you might find it rather difficult to get your head around which is the ideal boiler for you. At Conwy Valley Plumbing, we not only supply a range of boilers for our customers, we also offer lots of advice, going a long way to ensuring that you know exactly what you want, as well as what you’re having installed.

We are experts in all areas of central heating, boiler installation, boiler repair and we also have plenty of knowledge to give about energy saving devices. We have provided both commercial boilers and domestic boilers for many customers up and down the UK. Our many years of experience means we are now amongst the very best at what we do in our area, and even further afield.

We’re able to quickly and efficiently install boilers whilst also carrying out complete repair jobs, we are always on hand to come to the rescue if anything ever goes wrong. We’re just a phone call away. You might want a gas boiler, an LPG gas boiler or even an oil fired boiler; either way we are equally as skilled in working with each of these devices. This means you’ll be able to sit back and let us work our magic, and we promise you can always trust us to work with thoroughness, accuracy and reliability – we do this with every single customer we work with, be it at a domestic or commercial property.

We’re much more than an installation and repair company. Essentially, we strive to offer the complete package. One way we do this is by offering comprehensive advice, guidance and unrivalled knowledge, meaning that when you are looking into boiler installation, you’ll have (very nearly) as much expertise as we have ourselves. It’s our job to educate you before going ahead with any jobs, and this page will give you an insight into the different types of boiler we install, so you know a little bit about them before you speak to us.

When choosing which boiler is best for your home, it’s clearly best to get an understanding of which type actually does what, and what that might mean for your energy bills. This guide will help you understand more, that’s if you’re thinking of having one installed through us at Conwy Valley Plumbing or even if you’re just searching online. So keep reading, but if you want to find out much more, there’s a contact telephone number at the top right of this page where you can contact us and we’ll answer any questions.

Condensing boilers

We’d say that nearly all of the boilers that we install are condensing boilers. Condensing boilers are much more energy-efficient than older ones as they cleverly reuse heat that would otherwise be wasted.

How they work

Boilers contain a combustion chamber that the hot gas which is created by burning gas or oil passes through. This is surrounded by a heat exchanger which transfers heat from the gases to the water inside, heating it up.

In condensing boilers a second, or larger primary, heat exchanger removes even more of the heat from the flue gases. It pre-warms water coming back into the boiler from a heating system, meaning that you will be burning less gas when you want to heat up water.

By using this otherwise wasted heat, condensing boilers use around 90% of the heat they generate. Because the waste gas loses some of its heat to the secondary heat exchanger, it cools down into an acidic water called condensate and water vapour, with the heavier flue gases being blown out of the boiler by a fan.

There are three main types of condensing boilers: combi boilers, heat-only and system boilers and if you want to find out more about them, there’s more information below:

Combi boilers

Combi Boilers are our best selling type of boiler, and they are also the bestselling boiler type for gas central heating in the whole of Britain. A combi boiler provides the heat for your radiators and domestic hot water on demand. But where does the name combi boiler actually come from? The name comes from the fact it combines all the functions of a traditional boiler, hot water cylinder and water tank set-up.

All of the major parts are in one unit, this makes them very convenient to install. When you turn on your tap, water is drawn from the mains, heated in the boiler and comes straight out of the tap boiling hot. Storage combi boilers are also available if you want to have a small store of hot water.

Benefits of combi boilers

  • Instant and unlimited hot water supply with no waiting for the hot water cylinder to refill
  • An economical choice for smaller households with low hot water demands.
  • Smaller heating systems – combi boilers eliminate the need for a cold water tank, hot water cylinder and an airing cupboard
  • Drinkable water at all times which is supplied straight from the mains
  • Combi boilers are able to produce between 9 and 18 litres of water a minute
  • You’re able to run a powerful shower off the bath taps with the help of a combi boiler

Cons of combi boilers

  • Combi boilers can provide maximum water pressure through only one tap at a time and they’re not suitable for larger homes where multiple sources of water might be used simultaneously
  • There’s a delay in getting the hot water from the tap, meaning you have to wait for the combi boiler’s burner to warm up
  • Combi boilers aren’t able to heat hot water fast enough to supply a power shower and are very slow when it comes to running a bath
  • No immersion heater means that if there’s a problem with the boiler or gas supply, there’s no back up

You’ll find that if you live in a smaller home, a combi boiler will probably be the best option for you when it comes to choosing a new one. When space is at a premium, they are certainly the type of boiler to go for. If you like strong, hot showers without the need for an additional shower pump, again a combi will be right up your street.

Combination boilers from Conwy Valley Plumbing contain all the latest features including condensing technology and an ECO mode. Both go a long way to helping you improve your control over water heating by maintaining boiler temperature whilst in standby mode.

Contact us if you want to find out more about our range of Combi boilers, we’ll be more than happy to speak to you, answering any questions that you might have.

System boilers

A system boiler has two tanks, meaning it will take up more space than a combi boiler. A system boiler works on the principle of stored hot water, however, many of the major individual components of the heating and hot-water system are actually built into a system boiler. The system boiler removes the need for a feed and expansion cistern, but there is still a cold water tank (unless you have a pressurised hot water cylinder).

It’s the ideal choice for most family homes which are need of utilising as much space as they can for storage and that has a high demand for hot water, all day, everyday.

Benefits of system boilers

  • As there is a large tank of stored water, you are able to use several taps at once
  • There is no need for a feed and expansion tank in the loft
  • Can be used with pressurised cylinders, so that you don’t need a cold water tank in the loft either
  • Suitable for large houses with a higher demand for hot water
  • Fewer hearing system components situated outside of the boiler means that installation is quicker, neater, easier and more efficient
  • The pump is even included in the system boiler, resulting in a fast response and more economical running costs

Cons of system boilers

  • Hot water system takes up more room than other types of boiler like the combi boiler for example
  • Unless a cylinder is very well insulated, it normally tends to lose heat into its surroundings, wasting lots of energy
  • The amount of hot water you’re able to use is limited by the size of your cylinder and if you run a bath for example, you’ll then need to wait for the boiler to heat up the water before you’re then able to run another, unless you want a cold bath!

Heat only boilers

Heat-only boilers are the most old-fashion type of heating system in the UK. They provide heat for radiators directly and produce hot water which is stored in a separate hot water cylinder. The cold water is normally supplied by a cold water cistern which is usually located in the loft above the boiler (a gravity feed) whilst there is also a separate expansion cistern.

Benefits of heat only boilers

  • There’s a large tank of stored hot water so that you’re able to use several taps at any one time
  • Suitable for larger houses with a higher hot water demand
  • Easy to replace in old-fashioned heating systems without too many pipework changes

Cons of heat only boilers

  • Heat-only hot water systems take up more space than combi boiler systems
  • Unless a cylinder has been very well insulated, it usually loses heat into its surroundings, wasting energy
  • The amount of hot water you can use is limited by the size of your cylinder
  • The pump for the heating and hot water systems is housed outside the boiler and takes up much more space

Energy-efficient boilers

All new boilers which are now being manufactured, and all of the boilers that we install here at Conwy Valley Plumbing are energy-efficient boilers. Since 2010, all new boilers must be A-rated for energy efficiency or at least 88% efficient.

The energy efficiency rating system for boilers is called SEDBUK (Seasonal Efficiency of Domestic Boilers in the UK). All boilers are assessed and then awarded a rating to help you pick a boiler which is energy-efficient, or to see how efficient your existing boiler is.

Please contact us for information on all of the above, and if you have any questions about the following types of boiler:

  • LPG gas boilers
  • Oil fired boilers

We know that a broken boiler can cause absolute havoc in a family home; that’s why we have made it our mission to provide expert advice and a lightning quick service, so that your house’s central heating system is back up and running as quickly as possible.

Working with us, you won’t have to wait long at all for your boiler to be installed, be it in a new build or replacing an old system. This means you’ll be able to continue with your life, worry free and safe in the knowledge that our team have everything covered for you, and that things will be back to normal in no time at all.

Conwy Valley Plumbing Boiler types

Here at Conwy Valley Plumbing, we pride ourselves on our customer-focused ethos, we believe that this is what sets us apart from our competitors. We strive to carry out all of our boiler installations – be it a domestic or commercial job, with the highest level of accuracy and attention detail. We make sure that we do this with each and every customer we work with, it is testament to this hard work that we’re considered to be amongst the very best plumbing outfits in North Wales and across a wider area of the United Kingdom.

The Conwy Valley Plumbing team, based in the town of Llandudno in North Wales, have been installing and fixing all different types of boilers for many years now. We’re vastly experienced in all aspects of condensing boiler installation, including combi boiler installation, system boiler installation and heat-only installation. Get in touch with us by calling 01492 554 000 now, we’ll be able to organise any boiler fixing that you require or if you’re looking for plumbing services in North Wales.

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