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Best boiler brands

best boiler brands

Best boiler brands

You need a new boiler. So, you’ve Googled ‘new boiler’ and, then two hours later, you’re more confused and no closer to a decision than you were when you started. To be honest, we’re not surprised.

How do you decide which is the best boiler brand, let alone which of the hundreds of boilers on offer is the right one for you?

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Help is at hand! We’ve researched ten of the top UK boiler brands. We’ve dug into their backgrounds, checked out their range of heating solutions and found out the details for the all-important warranty.

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If you can’t wait to find out which boiler manufacturer rose to the top of our best boiler brand list we’ll let you in on the secret, it’s the Worcester Bosch boiler company. But, the thing about boilers is that what’s right for my requirements and my home may not be right for you.

So while we believe that Worcester Bosch offers the best overall package, there are some strong reasons why the alternatives may be a better fit for your home. Read on to find out why!

What is the best boiler type for you?

So before you get too engrossed in deciding which is the right boiler brand for your home, you also need to consider boiler types and central heating options.

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Combi boilers

The combination boiler is the top choice of homeowners in the UK when they’re looking for a new boiler, and that’s for several reasons. First of all, it’s a great option for a home with a shortage of space.

That’s because everything needed is one unit, and the combi boiler simply heats the water on demand.

Now, that can cause some challenges if you have more than one bathroom or need to have hot water delivered to two outlets at the same time. That’s because the combi may struggle to deliver that volume of hot water all at the same time.

However, help is at hand because several boiler manufacturers have come up with a solution for that issue in the form of a storage combi boiler!

If you already have a combi, then it’s highly likely that’s the replacement type that you’re going to be looking

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System boilers

For larger homes or where there’s high demand for hot water, then a system boiler might be a good choice.

System boilers store the hot water in a hot water cylinder, so that means that they have a large volume of hot water ready to go on-demand. Our system boiler prices guide can help you calculate how much a system boiler will cost you.

System boilers pull their water supply directly from the mains, so there’s no need for a cold water tank. If you currently have a system boiler, the most straightforward option for a new boiler is to go for exactly the same type.

However, if your heating and hot water requirements have changed, there’s no reason why you can’t go for a combi, it will just be a slightly longer installation process.

Regular boilers

Sometimes known as a conventional boiler, the regular boiler is the oldest type of boiler to be found in UK homes.

Both regular and system boilers store hot water ready for use, but the regular boiler also needs a cold water tank that’s usually located up in the loft.

If you do have a regular boiler right now, swapping it for the same is the easiest solution. However, you may found long term efficiency gains and reduced bills by switching over to a combi or regular boiler.

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The top ten best boiler brands

So here we go, in no particular order, is our list of the best boiler brands for UK households.

#1. Worcester Bosch – (Best boiler manufacturer brand)

Worcester Bosch is a boiler manufacturer that’s strongly connected with quality and for that reason, they’re currently the UK market leader. With a rich British heritage, the Bosch Group acquired Worcester in 1996, hence the brand name of Worcester Bosch Boilers.

Manufacturing is still carried out in the UK, with Worcester Bosch gas boilers being produced in Worcester while their oil boiler range is manufactured up in Derbyshire.

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Worcester Bosch warranty

If you’re wondering about the quality of Worcester Bosch boilers, well, you only need to turn to their warranties to see the confidence they have in their range of domestic boilers.

In our Worcester Bosch 8000 review, we discuss the impressive 10-year warranty that comes as standard. It’s good to know that it’s not only selected combi boilers that come with that warranty period, there are also system and regular boilers entitled to the same period of cover.

If the longevity of your boiler is important to you then do take a look at the Worcester Bosch system filter. Designed to protect your boiler from debris and pollutants that can find their way into the system, this is a cost-effective way of protecting your investment

The top Worcester Bosch combi boiler

If we were to pick just one Worcester Bosch boiler to present to you, then it has to be the new Worcester Bosch 4000 boiler.

This is the most popular boiler in the Worcester Boilers range, and it’s designed for average-sized homes with one bathroom.

Despite the Greenstar 4000 being small enough to fit between kitchen cupboards, it can deliver enough hot water to fill a kitchen sink within 45 seconds.

Just as a side note, if you’re not able to get gas at your property, Worcester oil boilers have a very positive reputation with both homeowners and heating engineers.

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#2. Viessmann – 2nd Best boiler manufacturer brand

Viessmann boilers is a well-known international manufacturer of heating solutions and considered to be one of the top boiler brands. Although a family business, they have a staff of over 12,000 and a presence in more than 120 countries across the world.

In the UK, Viessmann has a head office in Telford from where sales, customer service and technical advice is provided.

Viessmann warranty

The warranty offered from Viessmann boilers depends not only on the model but also on who installs it for you. If, for example, the installer has attended training at the Viessmann academy, then the warranty length may go up.

That then means that there could be a 12 year period of cover on offer for some Viessmann boilers, and that includes the Vitodens 100w.

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The top Viessmann combi boiler

Well, we’re struggling here as to whether to tell you all about the Viessmann Vitodens 050 W or the Viessmann Vitodens 100 w. So, and as we think they are two of the best combi boilers, we’re going to cheat and tell you a bit about both!

Vitodens 050 W

So, starting off with the Viessmann Vitodens 050-W boiler model, which despite being a budget boiler, is not at all budget like in what it has to offer.

Suitable for homes of up to three bedrooms, the 050 is fitted with a stainless steel heat exchanger to improve energy efficiency and longevity.

As a result, this is an incredible energy efficient boiler that achieves a rating of 97%.

Vitodens 100 W

The 10ow model is one of Viessmann’s top-selling condensing boilers. It’s a great choice for smaller homes, and it’s lightweight and compact design allows it to be fitted into a standard kitchen cupboard.

When it comes to efficiency, the 100W achieves an impressive 94% and as such, is an ErP A-rated boiler for heating and hot water.

We took a closer look at this model, and you can see our complete thoughts in our Viessmann 100 review.

#3. Valliant – 3rd Best boiler manufacturer brand

Vaillant boilers were established in Germany, but they have now become a European wide boiler brand. This boiler manufacturer has its UK head office and factory in Derbyshire, and that’s supported by a team of heating engineers based across the country.

Vaillant warranty

Just like Worcester Bosch, there are generous guarantee periods of up to ten years on selected Vaillant boilers. As with many manufacturers in the boiler market, the warranty on offer can vary dramatically depending on the type of boiler and the model.

So if you’re looking for a brand new boiler, do check this out before placing your order.

The top Valliant combi boiler

We mentioned earlier about the new combi boilers that can store hot water ready for use, and that’s exactly what the ecoTEC Combi Store is able to provide. Now you can turn on the tap in the kitchen without worrying about the person in the shower getting a torrent of cold water!

This is a powerful boiler with a 38kW power output, and it’s able to provide hot water at a rate of 20 litres per minute. We really like that you can get all this output, yet the ecoTEC is able to drop right back to 16% of maximum power when you don’t need high volumes of hot water.

#4. Alpha – A reliable Italian boiler brand

Alpha boilers are part of the Italian Immergas group, which provides a heating solution to consumers in 30 countries worldwide. Immergas is considered to be the leading European company within the heating industry, with over 7 million boiler manufactures under their belt.

Alpha warranty

As with all heating manufacturers, the warranty length available on Alpha boilers varies between models. That means that their incredibly popular E-Tec Plus combi is offered with a ten-year ‘out of the box’ warranty, while the E-Tec and Evoke combis come with a seven-year warranty.

The top Alpha combi boiler

Designed for medium-sized homes, the E-Tec Plus is available in three different power outputs, 28kW 33kW and 38kW. So, this could be on the shortlist for homes that make a higher demand on their hot water system.

With both a stainless-steel heat exchanger and a high-efficiency Grundfos pump and hydro block assembly, it’s not surprising that Alpha feel confident in their no strings attached warranty period.

#5. Baxi – 5th Best boiler brand

Baxi boilers have been around since the 1800s, so they have a pretty strong knowledge of the heating industry. Set-up in Lancashire, this is a boiler brand that is still UK based with multiple manufacturing sites across the country.

Baxi is part of the BDR Thermea Group a leading manufacturer of heating and energy solutions.

Baxi warranty

Up to 10-year parts and labour are available on Baxi boilers. It’s probably worth reminding you at this point that Baxi and other boiler manufacturers do have qualifying criteria for their warranties to be valid. so, these are likely to include:

1.    The warranty is registered with the manufacturer within a set period of time

2.    The boiler being fitted by a Gas Safe registered installer

3.    The boiler must be serviced every year

The top Baxi combi boiler

The Baxi 800 is a compact model weighing just 29kg and sized to fit in a 290mm kitchen cupboard. Despite its size, the 800 comes in three powerful outputs, 25kW, 30kW and 35kW and they’ve not scrimped on quality components either.

First of all, this model has long-lasting brass fitments and then Baxi has fitted a magnetic system filter as standard. This means that the boiler gain protection from damaging black iron oxide sludge. As a result, you won’t need to worry about a replacement combi boiler for years!

#6. Ideal – An Ideal choice of boiler brand

Ideal boilers were founded in the early 1900s when they were known as the National Radiator Company. They currently have their head office in Hull, and they’re supported by their team of heating engineers who are based across the UK.

Ideal boilers are known for their innovative approach in providing affordable heating technology to homeowners.

Ideal warranty

Ideal now offers some of the best warranty periods when purchasing a new boiler. The Ideal Vogue, for example, comes with a 12-year warranty on the condition of it being fitted and serviced by an accredited installer.

We love the fact that it’s a no quibble guarantee giving you peace of mind should something need fixing.

The top Ideal combi boiler

Of all the Ideal boilers, the one that really stands out to us is the Logic Max Combi Boiler. That’s because it’s a model that manages to combine ease of use with some great technology to ensure high levels of reliability.

The Logic Max is fitted with the high-efficiency Ideal System Filter. This, in turn, protects your heating system from suspended black iron oxide that can rapidly reduce the boiler efficiency.

We’re not the only ones who think this particular Ideal boiler is worth mentioning, this Ideal boiler also managed to be awarded Good House Keeping recommendations, the Queen’s Award and be Energy Saving Trust endorsed!

#7. Glow-Worm – Well-known boiler manufacturer

Glow Worm boilers is another company with its roots in Derbyshire. They started out manufacturing in Derwent in 1934 and have become a leading boiler brand in the UK.

In 2001 Glow-Worm became part of the Vaillant Group, a boiler brand that’s known for its innovative solutions and worldwide presence.

Glow-Worm warranty

At first sight, it might look as if the Glow Worm 2-7 year warranty is less generous than that available from other boiler brands.

However, if you choose a Glow-Worm Club Energy installer to fit your new boiler, then you could see the warranty leap all the way up to 15 years.

The top Glow-Worm combi boiler

The Ultimate₃ is available in two power outputs 30kW, and 35kW. This provides that extra flexibility in finding the best combi boiler for your home.

This boiler model comes with an automotive-grade aluminium heat exchanger, which is usually associated with the premium brands at a much higher price.

The Ultimate₃ is also fitted with a Grundfos modulating pump to help reduce energy usage and to improve energy efficiency. Our experience tells us that this is a reliable boiler from one of the best boiler manufacturers.

#8. Vokèra – 8th Best boiler manufacturer

Vokèra may not be one of the best-known boiler brands but they have been established for over 35 years and have a network of offices across the UK. Vokèra is part of the Carrier group who is a global provider of a range of technologies, including heating and refrigeration.

Vokèra warranty

The warranty on offer from this boiler brand really does vary depending on the model chosen. For example, there’s a 10-year warranty for the Evolve range of combi boilers but, it then goes right down to 5 years for the regular Mynute.

Do make sure though that meet all of Vokèra’s requirements for a valid warranty, as when these aren’t satisfied, the warranty can drop right down to 12 months.

The top Vokèra combi boiler

The Evolve is a top-spec and highly efficient boiler. In fact, Vokèra state that it’s the best boiler range that they’ve produced. There’s a real focus on efficiency, and while you may see this mentioned for other boilers, Vokèra really has some evidence for being able to make this claim

 First of all the Evolve has a modulation ratio of 1:7 whilst the normal ratio is 1:6. This means that your boiler can turn down its output saving energy and reducing bills.

Then, the Evolve is compatible with the BeSmart system. This means that your heating controls can be accessed via an app on your mobile phone. Now you have control of your system no matter where you are, and you don’t need to leave the heating on to come back to a warm home. With the BeSmart, you can simply turn up the thermostat thirty minutes before you arrive.

#9. Intergas – A lesser known brand for boilers in the UK

Intergas is a Dutch boiler brand with over 50-year’s of experience in boiler technology. This is a brand with a strong reputation for the reliability of its boilers. Their heat exchanger, for example, has never had a single mechanical failure making it a strong contender for offering some of the best boilers on the market.

Intergas joined Rheem’s Global Water Division in 2019. Rheem is the biggest boiler manufacturer in the US and operates in over fifty countries.

Intergas warranty

The warranty period offered by Intergas depends on the exact boiler model chosen., So for the Eco RF and Xclusive range, for example, the period of cover is ten years while for the Rapid boiler, it drops right down three years.

It is worth knowing though that there is a separate warranty period on the heat exchanger which for the Rapid boiler is seven years.

The top Intergas combi boiler

The Xclusive is the latest addition to this boiler brand. It includes, as standard, the ability to manage your heating remotely and also the functionality to allow your installer access to the system to ensure ongoing high levels of efficiency.

The modulation ratio of 1:9 further increases the efficiency of the Xclusive, and there’s the option for what’s called Priority Hot Water. This briefly switches the boiler to focus on providing hot water rather than heating.

As a result, hot water is supplied much quicker than you would usually expect without any real noticeable impact on the heating temperature.

#10. Potterton – A trusty old boiler manufacturer

Potterton boilers have a rich British history, with Thomas Potterton launching his first boiler back in 1894.

They quickly a well known and trusted boiler brand with a Warwickshire head office and manufacturing plant and a second site in Rugby.

In 1988 Potterton Boilers was acquired by Baxi, but they continue to be known as one of the best boiler brands.

Potterton warranty

When you purchase a new Potterton boiler for your home, you’ll receive a no-quibble warranty of up to 7 years.

The top Potterton combi boiler

It was an easy choice for us in deciding which Potterton boiler we’d provide details of for you. and that’s because the Titanium is a fully modulating boiler.

That means that it provides the opportunity for substantial energy savings by regulating its output to meet demand.

The Titanium is available in 4 different power outputs, making it suitable for a wide range of property sizes. And if you’ve had problems finding a suitable site for a boiler in the past, the Titanium can be fitted with a flue of up to 20 metres.

Our final thoughts

Whichever heating system you decide to buy, boiler price, reliability, support and warranty are the four key considerations that we tend to focus on.

Whether you’re looking for a complete central heating system, the best oil boiler brands or one of the cheaper boilers.

But, if you really pushed us into naming who we think is one of the best boiler brands, then it’s likely that Worcester Bosch is going to be at the top of our list. Their reputation for quality, the longevity of their boilers and their focus on high levels of efficiency push them just ahead of the others.

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