It has a wide choice of simple to use controls and a temperature display, however, with having such a large unit, a large space such as underneath a kitchen counter is required.
In first place comes Viessmann. Viessmann surpasses all other best combi boiler brands in the market with their advanced German engineering and efficient heating systems that are a great value for money. This isn't to say we don't think the other boilers listed in this article are not some of the best combi boilers on the market, the Viessmann is just the cream of the crop!
One of their key selling points is the longer lifespan, something that makes their combi boilers last much longer than a lot of competing products. Because of this, they will often appear near the top of any best combi boiler list. Efficiency can mean a lot when it comes to heating, which often makes Viessman a good choice for keeping costs low in the long-run. Even in designs that have a lower maximum heat output, the improved efficiency can save plenty of money and make better use of the power you are already consuming.
All of their models come with ten-year warranties when bought through iHeat, and there are simple finance options available for their more expensive offerings. In general, Viessman is a great choice for a smaller building , especially if you do not have as much room to store it. The higher efficiency removes a lot of the hassle from setting the combi boiler up and also means that there is more power packed into a single body.
You can fit a lot of them into existing cupboards or small alcoves, and the long-lasting design prevents them from breaking down easily.
With compact dimensions and low weight, the Vitodens W will integrate into any home without compromising on quality. Winner of the Which? Best Buy award, this combi boiler is Class-A rated for its energy efficiency and is easy to control with an LCD display. This combi boiler has all the great features of the W as well as extra features such as the extra 26kW output option and the user friendly backlit LCD Touchscreen for easy operation.
This boiler was endorsed by Which? Despite having to operate on a larger scale, this boiler remains compact and quiet thanks to its low speed fan.
It also has a new environmentally responsible MatriX-Plus burner which automatically adapts to the properties of different gas types to keep costs down and reduce the environmental impact of the boiler. Viessmann describes its Vitodens W as rapid, reliable and compact- and that it is, its one of the best combi boilers that Viessmann offer. This combi boiler is perfect for large families who have a high demand for hot water.
With the capacity to fill a bath in just 8 minutes, this combi boiler will never fail to provide the means for a relaxing soak. Here are some of the features that are bound to impress even those with minimal boiler interest:. Glow Worm are the exact opposite of the previous two choices: they might be somewhat simple, but they are also incredibly cheap, often appearing in rental properties and budget renovation projects.
Lower reliability can make them a risk in some cases, but they also come with warranties between two to five years, and installation is extremely straightforward. This gives you a very unique option for situations where a full boiler may not actually be needed, especially if you are actively planning to replace it with another boiler in the next few years. This niche is hard to fill with larger and more expensive options, making Glow Worm useful in the short-term.
The very low cost can also make them a suitable choice in the long-term as long as you can keep replacing or repairing them. For example, if you are saving up money for a full house renovation and do not want to spend thousands on a top-tier combi boiler, one or two Glow Worm models can do the same job until you are ready to renovate the entire building. This does not make Glow Worm a bad choice, it just means that they are suited to particular situations.
If you need cheap, straightforward and functional combi boilers, then it is a good place to start looking. Baxi is another high-quality option that fits somewhere between Worcester Bosch, Valiant, and Ideal Boilers.
Their boiler range includes combi boilers as well as other varieties, and all of them are relatively easy to install, coming in at a slightly lower price that makes them more affordable in the long-term. Baxi combi boilers are designed primarily for homes that do not demand a lot of hot water all at once, meaning that they may not be as effective if you have two bathrooms or multiple hot taps that you are using at the same time. However, they are very small and can easily be installed almost anywhere in the average home, which makes them a perfect choice if you are looking for a compact solution.
They also come with a variety of efficiency improvements and other benefits, which can lead to them becoming very useful if you are looking to keep your cost down and your heating functioning well. This combination of compact construction and reduced costs make them a great middle-ground option for most homeowners and ranks them as one of the best combi boiler. Potterton gets high ratings but is not known all that well, and their recent changes to their combi boiler models have given them two distinct types of boiler.
Older Potterton models are very durable, whereas newer ones are cheaper but lose some of their durability in the process. Even so, engineers often install them purely because of their excellent support, which makes it much easier to resolve faults or report issues that might be covered under warranties. They are also the cheapest of the top-tier boiler brands featured on this list, which can make them much more accessible without sacrificing too much in terms of quality.
While Potterton may not be mentioned very often, that does not make them a bad choice, and there are many people who still swear by using them over and over again. They fill a niche for people who do not have a high budget but still want something more than cheaper options.
The problem with choosing the best combi boilers is that every homeowner can want different things. Combi boilers are meant to heat water and provide heating , so it is obvious that they will need to do those basic things, but other features can really vary depending on what you are looking for.
For example, some people are desperate for high-efficiency models that cost less to run, especially if they are already on a tight budget and do not want high heating bills that can eat into their savings. Other people have more than enough money to cover the bills and want higher heating speeds or temperatures instead.
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Vaillant is a German boiler manufacturer which has been manufacturing heating solutions for over years. It is a well-established brand in the UK and has been providing combi boilers to the UK market for decades.
All of the combi boilers that Vaillant supplies to the UK market are manufactured at its production facility in Belper, Derbyshire. Vaillant offers a comprehensive range of combi boilers that are equipped with cutting edge technologies and future-proof functionalities. Our engineers are impressed with the efficiencies offered across the Vaillant combi boiler range.
Technology is a winner for Vaillant. The company has invested heavily in this area. Utilising technologies that enable it to be described as a premium boiler manufacturer. Whilst the Vaillant ecoFIT pure combi is the only Vaillant combi boiler in the current range to feature an aluminium heat exchanger. Vaillant recognises that there is a need for renewable heating solutions in the UK.
They have developed a range of air-source heat pumps, ground-source heat pumps, and water source heat pumps to meet this growing demand. Giving consumers greater choice in how they heat their homes. The components that Vaillant utilise earn it a place in this list and confirm it as a premium boiler brand.
In addition to the stainless steel heat exchangers utilised across the majority of the combi boiler range, Vaillant also utilises premium quality components.
Such as brass diverter valves. By opting for brass rather than plastic or composite components, Vaillant lessens the chance of a boiler breakdown due to these components perishing. With the development of its own VSmart app, Vaillant was one of the first manufacturers to ensure that its entire combi boiler range is compatible with smart home technologies. Which gave the consumer greater control over their heating system than ever.
This continues with Vaillant combi boilers being compatible with a range of smart controls. Utilising the companion iOS and Android app also enables you to control your heating from afar. Enabling you to warm your home precisely to the right temperature for your arrival home.
VSmart compatibility also means that Vaillant combi boilers can be controlled using voice commands via Amazon Echo devices.
Such as the ability to switch your hot water on when you leave the gym. VSmart will also monitor the local weather conditions and adjust your boiler to ensure the temperature in your home is appropriate.
Vaillant is noted for the energy efficiency of its combi boiler range. Using its investment into technology to its advantage. Whilst the likes of Viessmann and Worcester Bosch is offering up to a year guarantee or warranty on their products, Vaillant only offers a maximum of 7 years. Installation and commissioning of the boiler must be carried out by a Gas Safe registered engineer. The boiler must be serviced annually by Vaillant or another Gas Safe registered engineer.
And the guarantee does not cover failures caused by contaminated water, or fair wear and tear. Vaillant combi boiler parts are widely available at Screwfix, Plumbase, and other plumbing merchants both in-store and online. Out of 14, reviews, Vaillant has a Trustscore of 4. Best Buy report and has been the recipient of many Which?
In addition to this, Vaillant has been recognised for its green credentials at the Green Home Awards, and the Housebuilder Product Awards. Whilst its level of customer service was recognised in November by winning the Domestic and General Excellence and Quality award for its service department. Ariston finds its place in this list due to being an affordable combi boiler brand. A brand that we recommend to customers not looking for out and out premium functionality in a combi boiler.
Our engineers discuss these features in detail below. An Italian boiler manufacturer, Ariston was founded in , started producing water heaters in , and entered the UK market in Mid-range boiler manufacturers have historically been associated with lower quality components and somewhat dated technology, Ariston bucks this trend and it is for this reason we were adamant they should have a place in this list.
The stand out feature of the Ariston combi boiler range is its use of a stainless steel heat exchanger. What a stainless steel heat exchanger means to you as the consumer, is a boiler that is less likely to break down and a boiler that will retain its efficiency for longer. This all comes down to corrosion, or should we say lack of it. Stainless steel as a material is more resistant to corrosion than alternatives such as aluminium. The corrosion also impacts the efficiency of a boiler massively too, so again with no corrosion, efficiency is retained.
For you as the consumer, it means improved efficiency and longer service life for your boiler. We are also big fans of the Ariston Cube s Net smart thermostat supplied with the Ariston combi boiler range and the advanced level of control and efficiency this brings to the end-user.
Operating well in a wide range of pH levels, making it resistant to the corrosion that causes boiler breakdowns and affects efficiency in other boilers. This app allows you to control and manage your boiler from your smartphone wherever you are with an internet connection.
In addition to this, it allows you to set up a heating schedule so that your home is always at the right temperature. Whilst in the event of system failure, Ariston Net will send you a notification in real-time that informs you of the error code and required action. Despite differing warranty periods, even 8 years is still great for a mid-range boiler range. Ariston combi boiler parts are widely available at Direct Heating Supplies, PlumbNation, and Plumbase both in-store and online.
Ariston combi boilers are Good Housekeeping Reader Recommended. To identify whether a combi boiler is best for you and your property, your main consideration should be the size of your property and your hot water demands. There are now combi boilers available for properties from a 1 bedroom flat to a 4 bedroom house. You should also be considering the hot water needs of your household. To assist you in determining the best combi boiler for your property, we have selected the best combi boilers for specific property sizes below.
The more bedrooms and bathrooms you have, the higher the output boiler you will usually require. However, to assist you further, we have detailed specific boilers currently available that are suitable for your property size. What is the best combi boiler for a two bedroom house? If you have a two-bedroom house, you will usually have one bathroom and up to 10 radiators. Our recommendation for a property of this size is a Viessmann Vitodens W 26kW combi boiler.
In addition to the Viessmann Vitodens W 26kW combi boiler, the following combi boilers are also suitable for a two-bedroom house with one bathroom and up to 10 radiators:. What is the best combi boiler for a three bedroom property? A typical three-bedroom house will have one bathroom, a downstairs toilet, possibly an en-suite to the master bedroom, and up to 12 radiators. For this reason, a slightly higher capacity boiler between kw will be sufficient for a property of this size.
For a property of this size, we recommend a Viessmann Vitodens W 30kW combi boiler. In addition to the Viessmann Vitodens W 30kW combi boiler, the following combi boilers are also suitable for a three-bedroom house with one bathroom, a downstairs toilet, an en-suite bathroom, and up to 12 radiators:. What is the best combi boiler for a property with four bedrooms? Whilst it would have been unheard of to recommend a combi boiler for a 4 bedroom house then, today higher capacity combi boilers, and storage combi boilers are available.
For a property of this size, we recommend a storage combi boiler. This will provide all of the benefits of a combi boiler such as instant hot water, and there is no need to have a hot water storage cylinder, or a cold water tank but it will also be equipped with an integrated hot water storage tank of around 50 litres.
Having this storage tank enables the boiler to be able to provide higher flow rates and provide hot water to multiple sources simultaneously. For a property of this size, we recommend a Viessmann Vitodens W storage combi boiler.
In addition to the Viessmann Vitodens W storage combi boiler, the following combi boilers are also suitable for a four-bedroom house with one bathroom, a downstairs toilet, an en-suite to the master bedroom, and up to 15 radiators:.
This makes it an attractive option for first-time buyers and landlords. Whilst it comes at a cheaper price point, the Ariston Clas ONE is what we would describe as a mid-range combi boiler. Being stainless steel, this heat exchanger will offer retained efficiency and will lessen the chances of the boiler breaking down due to issues with corrosion, whilst offering improved water flow and enhanced heating performance. Giving you the peace of mind needed when making a significant financial outlay, the Ariston Clas ONE comes with 8-year parts and labour warranty, as standard.
This is great for a boiler at its price point and provides you with that added level of protection should something go wrong. For a one-bedroom property, we recommend the 24kW due to its flow rate of Whilst its lightweight construction makes it suitable for wall mounting, which is a must-have for properties with limited space.
Compatibility with the Ariston Net app is a real plus point for this boiler and brings with it futureproof technology that enables you to set, change and control your boiler wherever you are with an internet connection.
Read our best gas and oil boiler brands guide for the results of all boiler brands from our boiler survey. Our boiler survey of 8, members of the public, found 17 gas and oil boiler brands - all produce combi boilers. Baxi is one of the biggest combi boiler manufacturers in the UK. Its range of Assure, Duo-tec, Megaflow and Platinum combi boilers come in sizes to suit almost any size and type of home.
But are Baxi boilers reliable? And what do expert heating engineers make of them? Head over to our Baxi combi boiler reviews to find out. Read our full reviews of Glow-Worm combi boilers to find out how long they last, what its customers make of them and expert ratings from heating engineers.
Our Ideal combi boiler reviews reveal how reliable Ideal boilers are, as well as what customers and engineers think of them. As such, several of Potteron's ranges - such as its Assure range - have been absorbed under the Baxi name. Read our Potterton combi boiler reviews to find out if they'll outlast the competition and what expert heating engineers make of them. Are Vaillant boilers worth the cost? Read our independent Vaillant combi boiler reviews to find out.
Viessmann is a German boiler brand making waves in the UK boiler scene. Its Vitodens combi boiler lines have been updated in Read our Viessmann combi boiler reviews to find out how long they last compared to competitors, and whether it has the respect of its customers and expert heating engineers.
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