Takes up space - you'll need room for cold water feed and expansion tanks to be installed. Temporarily run out of hot water - if lots of people are using the hot water, it's possible to run out and you'll have to wait for the hot water tank to refill. Doesn't give hot water on demand - you have to wait for the water in the cylinder to heat up. Good for larger households - if you have multiple bathrooms with people frequently needing to use hot water at the same time, a heat-only boiler will meet this demand. Heat-only boilers typically have components housed externally from the boiler, such as a circulation pump. You will also normally have an on/off switch - so you can heat water in the storage tank when you know you're going to need it, and leave it switched off when not in use.Īn 'open-vented' heat-only system - the most common heat-only boiler system - requires a cold water feed and expansion tanks in the loft. 
Moving parts - the boiler unit contains moving parts, so there is more potential for things to go wrong than with a conventional boiler.ĭecided a combi boiler is for you? Find out what the best combi boilers brands are, or go straight to our expert reviews of combi boilers Heat-only boilersĪlso known as 'conventional' or 'regular' boilers, heat-only boilers provide heat directly to your radiators and connect to a water tank to provide hot water.Limited by mains pressure - they don't work as well in homes with poor water pressure.This typically means it isn't possible to run more than one bath or shower at a time, or a shower while someone else does the washing up using hot running water. Only one shower at a time - the rate at which water is supplied reduces when the boiler is trying to provide hot water to two or more places at the same time.
Instant hot water - you don't have to wait for a water tank to heat up a combi boiler will immediately supply unlimited hot water. Easier to service - due to their popularity, most engineers are trained to work on combi boilers, making it easier to find a qualified one in your local area. Aesthetics - all its components are within the boiler casing, making it more compact and neater to look at. Take up less space - a combi boiler doesn't need a water tank, so you'll have more space. They are a great choice for many homes, especially for smaller houses and flats that only have one bathroom, as they have a lower hot water and heating demand than larger properties. Combi boilersĬombination boilers connect directly to the mains cold water supply, providing hot water on demand. Read on to discover more pros and cons for the various types of boiler. What type of boiler do you need?Įvery home is different, and so the right type for your household may be different to your neighbour's. Read our best gas and oil boiler brands guide to discover the ones to go for. 
Half of homeowners, on average, consider changing brand when getting a new boiler installed (Which? boiler survey 2021).
CONDENSE LOG PLUS
Read on to learn more about the various types of boiler and to find out the pros and cons of each, plus how a condensing boiler could save you hundreds on your heating bills. Heat-only and system boilers are better suited for a variety of situations, and the wrong type could lead to significantly higher bills or long delays for hot water. But it's not the best option for everyone. No matter what type of fuel your boiler runs on, there are different types of boiler available.Ī combination (combi) boiler is the most common type of boiler the UK.
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