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Best Combi Boiler 2021 – Top 5 Best boilers to buy right now

Best combi boiler

What is the best combi boiler in 2021?

Buying a new boiler is always a task that’s fraught with lots of decisions so getting the best combi boiler is paramount to a warm and happy home.

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What type of boiler do you choose? What size boiler do you need? Where should you buy it from? What warranty length is best for you?

Once you know what type of boiler you want for your home, the decisions slowly get easier. As such, this is the first consideration that you should make when choosing a new boiler. Best Combi Boiler 2021 - Top 5 Best boilers to buy right now Compare Boiler Quotes

If you decide that a combi boiler is the best boiler for you, then you need to find a make and model that you like.

Many boiler brands offer combi boilers, so you need to work out which are the best combi boilers on the market and then which one will be great for your home.

There’s a lot of factors to consider when choosing a new boiler replacement, even if you do know that you want a combi boiler.

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From what power output you choose to what material its heat exchanger is made from, you need to take a lot into account so that you can get the most suitable boiler that will give you a great return on your initial investment.

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Best boilers in 2021: By Brand

In order to find the best boilers right now, we look at the below factors that give us concrete evidence in finding the best boilers on the market:

  • How efficient they are
  • Trustpilot rating of the maufacturer
  • Reputation of the brand in the market
  • Any awards such as Which? Best Buy
  • How long the warranty is
  • Price range compared to the rivals
  • Customer service of the brand and aftercare

#1 Worcester Bosch combi boilers (rated the best)

Worcester Bosch is top-rated for its superb range of combi boilers. They have recently revamped their range of combis with a budget, mid and high-end boiler range.

Featuring an array of Which? Best Buy awards come on top year after year. Being UK based, there’s no wonder they offer the highest quality combi boilers with a range of price points.

Why does Worcester Boch offer the best boilers?

Simply put, we give ratings on the above-listed criteria and Worcester come out as the best option. Some of the best features are:

  • Long 10-year warranties (12-year if you purchase here at Boiler Central)
  • Aftercare is the best rated by its customers
  • Top rated on Trustpilot and review sites
  • Which? Best Buy for many years
  • UK based producing quality products
  • They have combi boilers suitable for most homes

Get a price on a Worcester Bosch combi boiler here

What combi boilers are the best from Worcester Bosch?

Below are the top combi boiler options from Worcester, in order of popularity:

Worcester Bosch Greenstar 4000 combi boiler (the new Greenstar i range)

The Worcester Bosch Greenstar 4000 range was introduced in 2021 which is a mid-range combi boiler that replaces the Greenstar i that is in a high proportion of UK homes. We recently completed an in-depth Worcester 4000 review if you would like more information in detail.

This fantastic combi boiler is a sleek looking, rounded off boiler that’s proven to last a long time.

Not only that, they offer a long warranty with this 4000 range to give you peace of mind. The warranty covers parts, labour and call outs if anything does go wrong.

This combi boiler range boasts wireless connectivity and can be used with smart thermostats such as the Google nest or Hive thermostats.

Read more: Best smart thermostat guide

Worcester Bosch Greenstar i

Although there isn’t a huge supply left of these at the time of writing, the Greenstar i range was installed in huge numbers by the likes of British Gas for many years.

Although these days British Gas boiler prices are much higher than online boiler companies they still churn out high numbers of Worcester combi boilers.

It is said that there are over 1 million Greenstar i boilers installed in homes in the UK so you can see why they were the number one and most installed boiler for over 10-years.

Worcester Bosch Greenstar Si Compact combi boiler

This super-compact model is the upgraded combi boiler from the CDI compact range that again, Worcester sold in huge numbers for over 10-years.

You would only really need one of these if the boiler needs to reside in a kitchen cupboard as the 4000 would be the preferred option if space was not an issue. They still are a great combi boiler and pack a punch in terms of efficiency and flow rate.

Worcester CDi Classic combi boiler

The CDi classic combi boiler is best for homes that want a premium combi boiler that’s trusted and stood the test of time. Some would say it’s the best combi boiler in their lineup but since the 4000 coming out in 2021, it is probably not anymore.

The CDi comes with a higher price tag due to some upgraded internal components but still has the same warranty as the 4000 and 8000 range from Worcester. They will probably retire this range at some point soon.

Worcester CDi Compact combi boiler

The CDi Compact combi boiler is a great option if you need the boiler in a kitchen cupboard however since the release of the Si compact, this range is going to soon be no longer.

These types of boilers from Worcester featured Which? Best Buy awards over the years and had 10-year warranties but why would anyone really want to buy this combi when they can get the new, upgraded Si Compact?

Worcester CDi Highflow combi boiler

The Highflow is a floor-standing combi boiler that’s got some serious power for large homes requiring high hot water outputs.

This would be the best combi boiler for large homes due to its large flow rate that can power several showers or baths at once as well as running other hot water outputs.

Worcester Bosch 8000 Life and Style combi boilers

The Greenstar 8000 range is for the style-conscious as it’s probably the best looking combi boiler on the market right now. The Viessmann 100-W range might be a close 2nd.

The 8000 style and life boilers come in kilowatt (kW) ratings from 30kW right through to 50kW.

A 50kW combi boiler is huge. Serious power for big homes such as large 5 bedroom homes.

It features many benefits like the Worcester 4000 such as smart connectivity, intelligent filling system and pressure monitors, curved edges and a really easy to use touchscreen display.

Here’s why Worcester Bosch provides the best combi boiler right now:

Simply put, they offer the top boiler ranges as they have such prominence with their brand featuring an array of benefits that outweigh their competitors.

Wondering how much a new boiler cost is from Worcester? Get a fixed price on the best boilers below:

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#2 Viessmann combi boilers (2nd best combi boiler)

Viessmann is a German brand that has grown rapid market share over the last 4 to 5 years with some fantastic boilers for all types of budgets.

From low-end workhorses to high-end storage combi boilers such as the Viessmann 111-W there is a boiler for every home in their range.

They offer boiler replacement options with German engineering – what could be better? (Worcester combi boilers)

Below is the full range of combi boilers from Viessmann and the best combi boiler options right now in order of best to worst.

Viessmann Vitodens 050-W combi boiler

The Viessmann Vitodens 050-W combi boiler is their mid-entry-level boiler that’s designed to rival the Worcester Bosch 2000 model.

Featuring an array of superb features such as:

  • 10-year warranty (12-years with Boiler Central)
  • Sleek, modern design
  • Stainless steel heat exchangers
  • Compatible with smart thermostats
  • Available in 29kW and 35kW

Read our Viessmann 050-W review for more information on this great combi boiler or get your 12-year warranty and order online from Boiler Central here.

Viessmann Vitodens 100-W combi boiler

The Viessmann Vitodens 100-W combi is the 2nd best boiler in the Viessmann lineup, in our expert opinion.

It’s a step up from the 050-W that we looked at above due to having some higher grade internal components. Some benefits of the Vitodens 100-W are:

  • 10-year warranty (12-years with Boiler Central)
  • LCD display for operating the boiler
  • Stainless steel heat exchanger
  • Super quiet boiler
  • Updated in 2021 & looks really smart (aesthetics only)
  • A-Rated and produces low emissions

You can get a 10-year warranty with quite a few providers, BUT why settle for less when you can get a whopping 12-years from Boiler Central? You shouldn’t! Get a fixed price using this online boiler calculator

Viessmann Vitodens 200-W combi boiler

The Vitodens 200-W is the big daddy out of the 050 and 100, which is designed to be at home in a larger property with multiple bathrooms and/or showers.

The Vitodens 200-W range has most of the benefits as listed in the 100-W but you also get a whopping 98% efficiency rating.

Viessmann Vitodens 111-W combi boiler

This superb storage combi boiler provides a huge 18 litres of hot water per minute and is perfect for large homes that have a big hot water demand.

This combi boiler is the best in the Viessmann line up as it also stores some water in the boiler, hence it being a storage combi boiler. This gives it the capacity for instant hot water but also can pump out enough on demand if needed.

If you are worried a combi boiler will not be enough for your home, think again. The Viessmann Vitodens 111-W is the answer to your hot water and heating requirements in most large homes.

Get a price on the Vitodens 111-W here in 20 seconds

So, why are Worcester offering the best gas combi boiler over Viessmann?

Simply put, Worcester has better aftercare and warranty service than Viessmann. If anything goes wrong then you need it foxing and Worcester seem to be the best at aftercare.

Both manufacturers offer some superb boilers in the market so if we were looking at the best combi boiler on its own (no aftercare or reviews etc added in) then we would probably pick the Worcester Bosch 8000 combi series.

#3 Ideal combi boilers (3rd best boilers)

Ideal are a well-known UK boiler manufacturer that have really stepped it up over the last few years. The boiler range and marketing campaigns have seen a huge boost, as well as being the UK’s most installed boilers.

They are fitted in a high percentage of new build homes (clearly won the tender) and new home buyers are having no problems with these trusty Ideal combi boilers. Read our Ideal boiler price guide for full pricing and information on an Ideal boiler replacement cost.

These are the best combi boilers from Ideal

Ideal Logic combi boiler

With a whopping 10-year guarantee, when purchased from the likes of heating giants Boiler Central, the Ideal Logic range is ideal for many homes.

Featuring many benefits this range of combi boiler will last years with no hassle or fuss. Some of the best features of these combis are:

  • UK made with quality parts
  • Long 10-year warranty available (at Boiler Central)
  • Small and compact for kitchen cupboards
  • Has Quiet Mark accreditation (super quiet)
  • Won the Good Housekeeping Award in 2013 & 2017
  • Excellent rated on Trustpilot

If you are looking to compare prices on an Ideal boiler, click here now

Ideal Vogue & Vogue Max combi boilers

The Ideal Vogue is a combi boiler that’s aimed at the mid to high end market as these are at the higher end of a new boiler replacement cost for your home.

Coming in a range of sizes from 26kW through to a whipping 40kW they have a solution for small, medium and large properties.

They have the Vogue range and the Vogue Max. The main differences are that the Vogue Max features a water filter that’s approved and made by Ideal which in turn gives you a longer warranty.

They extend the warranty from 10-years to 12-years for the Vogue Max and really does provide a great combi boiler for any property.

Expect to pay around £2,200 to £2,900 model and size dependent.

Get a price on any of the above Ideal boilers with our free online quotation tool here.

#4 Alpha combi boilers (4th best combi boiler)

Alpha is a fairly new name to the boiler industry who provide a range of low to mid-range boilers. They offer both reliable boilers as well as affordable combi boilers.

In the range they have various combi and boiler types to choose from, of which the best of these are outlined below:

Alpha E-Tec combi boiler

The Alpha E-Tec combi boiler is a budget buy which packs a punch in terms of reliability and performance for the price range. Alpha boiler prices are generally low, you can pick the 29kW up from Boiler Central for £1,595 fully fitted and installed with a huge 10-year warranty.

Something to note is their Excellent Trustpilot reviews. If they were not a really good combi boiler then Alpha’s Trustpilot would let us know for sure.

The E-Tec is available in a 29kw 33kW and 38kW power range which perfectly suits small, mid and larger properties alike. They really do have a kilowatt rating boiler suitable for most homes who require a combi.

Features and benefits of the E-Tec combi boiler are below:

  • 7-year warranty (10-years with Boiler Central)
  • Stainless steel heat exhangers
  • Easy access to the pipes for servicing
  • Can deliver a huge 14.1 litres per minute
  • Ideal for small and medium size homes
  • Can be used with smart thermostats

If anything more than 38kW is required, and a combi boiler is needed, then the Worcester Bosch 8000 boiler is probably the way to go.

Alpha E-Tec Plus combi boiler

The E-Tec plus is basically the above E-Tec on steroids. Ish. See the benefits below:

Features and benefits of the E-Tec combi boiler are below:

  • 10-years warranty
  • Stainless steel heat exhangers
  • Easy access to the pipes for servicing
  • Can deliver a huge 14.1 litres per minute
  • Integrated filling loop
  • Ideal for small and medium size homes
  • Can be used with smart thermostats
  • Upgraded control panel to the standard E-Tec

Alpha Evoke

The Evoke combi boiler from Alpha looks very similar to the standard E-Tec on first impression but there are some key features to why this is a different model of combi boiler.

This model is only available at certain merchants so not all Gas Safe engineers may be able to access these boilers.

Here are the top features:

  • 7-year warranty (10-years from Boiler Central)
  • Backlit LCD display with push button controls
  • Easy access for servicing
  • Compact size, great for cupboards
  • Stainless steel heat exchanger
  • Frost protection (big benefit here over their others)
  • Good for small to medium size homes
  • Can deliver 14.1 litres per minute

We think that the best in their range is probably the E-Tec plus so if you’re set on an Alpha, then get that one. You can get a price on one of them here.

#5 Vaillant combi boilers (5th best combi boilers brand)

Vaillant are well known brand of boilers that are always bubbling around 4-5th spot as they do not seem to be able to produce boilers like Worcester Bosch and Viessmann.

Although Vaillant boilers are actually manufactured in the UK, most customers think they are a foreign boiler company. They have decent warranties and their ecoTEC range is certainly their most popular.

Here are the range of Vaillant combi boilers right now:

Vaillant ecoTEC plus combi boiler

The ecoTEC plus combi boiler is the most popular boiler in Vaillant’s line up with many thousands installed each year in the UK. They feature a range of benefits such as:

  • Up to 10-year warranty (5 standard) – not great
  • Available in 25, 32, 35 or 38kW
  • Up to 15.9 litres per minute flow rate
  • Quiet Mark Accreditation
  • Perfect for small & medium size homes
  • Tried, tested and still going strong
  • Excellent rated on Trustpilot
  • UK made for quality workmanship
  • Great availability of parts
  • Dimensions: H 720 x W 440 x D 338

Vaillant ecoTEC exclusive combi boiler

This model comes with ‘Green iQ‘ from Vaillant.

  • Up to 10-year warranty (5 standard) – not great
  • Available in 35 or 43kW
  • Up to 17.8 litres per minute flow rate
  • Quiet Mark Accreditation
  • Perfect for medium to large homes
  • Tried, tested and still going strong
  • Excellent rated on Trustpilot
  • UK made for quality workmanship
  • Great availability of parts
  • Dimensions: H 720 x W 440 x D 474
  • Can work with LPG no problemo.

Vaillant ecoTEC plus store combi boiler

The ecoTEC store combi boiler is a storage combi boiler which holds water ready for demand. This is a super powerful boiler which features all of the above points with a few changes, as below:

  • Up to 10-year warranty (5 standard) – not great
  • Available in 38kW
  • Up to 20 litres per minute flow rate
  • Quiet Mark Accreditation
  • Perfect for medium & especially large homes
  • Tried, tested and still going strong
  • Excellent rated on Trustpilot
  • UK made for quality workmanship
  • Great availability of parts
  • Dimensions: H 720 x W 440 x D 624

Vaillant ecoTEC pro combi boiler

The ecoTEC pro is a little confusing even for us as there isn’t really any distinction between models.

Other manufacturers of the better combination boilers like Worcester have really easy model upgrade recognition. Anyway, here’s what you get with the ecoTEC pro combi:

  • Up to 10-year warranty (5 standard) – not great
  • Available in 24, 28, 30kW rating
  • Up to 12.3 litres per minute flow rate
  • Quiet Mark Accreditation
  • Perfect for small & medium size homes
  • Tried, tested and still going strong
  • Excellent rated on Trustpilot
  • UK made for quality workmanship
  • Great availability of parts
  • Dimensions: H 720 x W 440 x D 338
  • Works with LPG

Vaillant ecoTEC pure combi boiler

Lastly, the ecoTEC pure is Vaillant’s cupboard fit combi boiler. Again this is Quiet Mark approved which means you won’t really notice it’s on in your kitchen cupboard.

Here are the benefits and features of this combi boiler below:

  • Up to 10-year warranty (5 standard) – not great
  • Available in 25, 30, 35kW rating
  • Specialist kitchen cupboard boiler
  • Up to 14.1 litres per minute flow rate
  • Quiet Mark Accreditation
  • Perfect for small & medium size homes
  • Tried, tested and still going strong
  • Excellent rated on Trustpilot
  • UK made for quality workmanship
  • Great availability of parts
  • Dimensions: H 700 x W 390 x D 295

How expensive are Vaillant combi boilers and are they worth it?

Vaillant’s combis are quite expensive compared to comparable boilers from other manufacturers. For the price tag you would expect their boilers to be premium and actually have better components and internal aspects than their rivals, but that’s not so.

Maybe due to having quite a few boilers in their line up they need to have a wider price span. If you would like more information on Vaillant boiler prices then our guide will help you decide what’s best for you.

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What Is A Combi Boiler?

Before we share our overview of the best boilers on the market currently, we thought we’d define a combi boiler so you know what you’re getting.

A combination boiler, which is usually known as a combi boiler, is a compact unit that efficiently provides hot water on-demand for heating and the taps in your home.

A combi boiler heats water on-demand to your taps and central heating, and as such you only need one unit. As this type of boiler heats water as and when you need it, they don’t require bulky additional equipment such as a cold water tank or a hot water storage cylinder.

As a result, these boilers are small, and can easily fit into an airing cupboard or snug recess. Combi boilers are one of the best choices for homeowners who want to save money on their energy bills and reduce their impact on the environment.

However, the downside is that, because of their compact size, combi boilers do not have the capacity to deal with large demands for hot water. Best Combi Boiler 2021 - Top 5 Best boilers to buy right now Compare Boiler Quotes

Therefore, a combi boiler is best for small properties, such as flats, bungalows and small houses with few bedrooms and bathrooms.

For these properties, combi boilers can be ideal, as they are cost-effective, both in terms of purchasing and installing the boiler, as well as running it. Sounds great but sometimes combis aren’t always the best boilers for some homes.

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What are the alternatives to a combi boiler?

For some homeowners, a combi might not be the best boiler for your lifestyle. If you have a large property with lots of bedrooms, or you already have a different type of boiler, then combi boilers might not be the best choice.

Combi boilers are one of the most popular types of boiler on the market currently, but they’re not the only ones.

The two other most prominent boiler types are system boilers and regular, or heat-only, boilers. These boilers are great for larger homes that need a greater capacity boiler to meet their requirements.

A system boiler is a solution that uses a hot water cylinder to store hot water until it is needed for your home’s central heating system or it has to supply hot water to the taps.

As such, these boilers are slightly larger than combi boilers, but they are also more powerful and can suit larger homes.

Another popular option is regular, or heat-only boilers. These boilers require additional equipment; not just the unit itself and the hot water cylinder, but also a cold water tank and a hot water storage tank.

All of these components form a powerful system that can meet the needs of large properties, such as small commercial premises or expansive family homes with lots of people. Best Combi Boiler 2021 - Top 5 Best boilers to buy right now Compare Boiler Quotes

Combi boilers are the most cost-effective of these options, but if you need a more powerful solution then one of these types of boilers could be the best solution.

Many system and regular boilers are designed with energy efficiency in mind so that you can find an energy-efficient option that will save you money on your energy bills and benefit the environment.

Before you make your decision on the type of boiler you want, you should learn more about the types of boiler that you can buy.

Using this information, you can find the best boilers that will suit your needs and give you great service for many years.

Read more: Condensing boiler vs combi boiler guide

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5 Best combi boilers right now:

Once you’ve decided that combi boilers are the best solution for you, you need to check what is suitable for your home.

Above you learnt about the best boiler brands and their full range so now we give you the top 5 combi boilers available right now that you can buy.

Before you read further, remember the best place we recommend you to buy your new boiler (with industry-leading warranties) is here at Boiler Central.

Searching through all of the available brands of combi boilers available on the market might seem time-consuming and stressful, which is why we’ve put together this guide to the best combi boilers that you can buy in 2021. Best Combi Boiler 2021 - Top 5 Best boilers to buy right now Compare Boiler Quotes

At Compare Boiler Quotes, we offer a variety of boilers from many different boiler manufacturers and aim to give our clients the best possible boiler prices and boiler installation services.

As such, we’ve encountered most of the combi boilers on the market today.

Worcester Bosch Greenstar 2000 Best Combi Boiler 2021 - Top 5 Best boilers to buy right now Compare Boiler Quotes

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Part of Worcester Bosch’s renowned Greenstar range, the Greenstar 2000 is an energy-efficient combi boiler.

Worcester Bosch is one of the world’s most respected boiler brands with a long history of producing quality products that are favoured by homeowners and professional heating engineers alike. Best Combi Boiler 2021 - Top 5 Best boilers to buy right now Compare Boiler Quotes

Since its humble beginnings in 1962, the firm has flourished, having joined the globally respected Bosch Group in 1996.

Today, the brand is one of the most respected when it comes to boiler technology, and Worcester Bosch boilers are renowned for their efficiency and longevity.

The Worcester Bosch Greenstar range is one of its most popular choices for combi boilers. The Greenstar 2000 epitomises the brand’s commitment to quality and innovation and the excellence of this popular collection.

This compact Worcester Bosch combi boiler, which comes with an output of either 25kW or 30kW, is competitively priced and designed for convenience.

As such, it boasts removable side panels, which allows installers and boiler engineers to easily access the PRV and other internal machinery.

Some of the other benefits of the Worcester Bosch Greenstar 2000 are:

  • The Greenstar 2000 comes with up to a 10-year guarantee, so you can rest assured that if something goes wrong in the first decade, the brand will have it covered
  • The product boasts Worcester Bosch’s pioneering C6 Heat Exchanger, which is innovative and can modulate down to 4.8kW, improving the boiler’s energy-efficiency
  • The boiler can be attached to a flue of up to 9m horizontally and 12m vertically, so it’s ideal for a variety of different properties
  • The quick tap feature on the Worcester Bosch Greenstar 2000 allows homeowners to save water and energy, as well as enabling them to get hot water quickly
  • This model is one of the brand’s quietest options, so it won’t disturb your household
  • The Greenstar 2000 is fully compatible with 230V heating controls
  • The boiler is easy to access and maintain, with most parts being removable in just seconds
  • It has a replaceable mains cable to improve longevity and make it even easier to take care of the unit in the future
  • Made by a respected boiler manufacturer, the Worcester Bosch Greenstar 2000 is reliable and will give you great service for more than a decade
  • All of these cutting-edge features and functions come at a competitive price

Read more: Worcester 2000 boiler review

Viessmann Vitodens 050-W Best Combi Boiler 2021 - Top 5 Best boilers to buy right now Compare Boiler Quotes

Viessmann is renowned for its energy-efficient boiler solutions, and the firm has been producing reliable, eco-friendly boilers and central heating systems for more than 100 years.

Today, the brand offers a wide variety of innovative solutions, including the wall-mounted Vitodens 050-W, an efficient, high-quality gas condensing combi boiler.

For a relatively low price, buyers can receive a compact boiler that has loads of the latest features and is designed with longevity in mind.

The team at Viessmann have aimed for quality and reliability with the Vitodens 050-W and it shows in every component of this boiler model.Best Combi Boiler 2021 - Top 5 Best boilers to buy right now Compare Boiler Quotes

From the stainless steel Inox-Radial heat exchanger to the digital interface with its bold LCD display, this is one of the best boilers on the market for tech-focused homeowners who want all of the latest functions for their new boiler.

Some of the other benefits of the Viessmann Vitodens 050-W are:

  • The Vitodens 050-W boiler comes with two DHW output ratings, either 5.9 to 29 and 8 to 35 kW
  • At just 37 Kg in weight and 707mm in height, the Viessmann Vitodens 050-W is light and compact, making it perfect for small properties with limited space
  • As a light, compact boiler, this model is easy to transport and install, even in challenging properties such as a flat at the top of a building
  • The boiler is quiet and unobtrusive
  • The Vitodens 050-W comes with a 3-year warranty as standard, and you can extend this to a 7-year warranty
  • The boiler is wall-mounted, and as such, it can be unobtrusively placed in a small recess or nook
  • Viessmann offers a wide range of accessories to go alongside the Vitodens 050-W, including a tado° thermostat with a smartphone app, and an outside temperature sensor
  • The brand is respected and renowned for its quality products, so you know that you will get great value from a Viessmann boiler such as this one

Read more: Viessmann 050 boiler review

Ideal Logic C30

With more than a century’s experience creating boilers, Ideal Heating has a long history of providing some of the best combi boilers on the market. Best Combi Boiler 2021 - Top 5 Best boilers to buy right now Compare Boiler Quotes

The company’s Ideal Logic boiler range is popular with a wide range of homeowners and property developers thanks to its efficiency and quality.

The Ideal Logic C30 is a condensing gas boiler that comes in three different outputs: 24kW, 30kW and 35kW. As such, this boiler is a flexible option that can be perfect for small or larger properties.

Flexibility is something that Ideal Heating is dedicated to, and that’s why the firm offers 2-year parts and labour warranty on this boiler model, with a 10-year warranty on the heat exchanger.

Some of the other benefits of the Ideal Logic C30 are:

  • The Ideal Logic C30 has a class A rating for water heating energy-efficiency, as well a class A rating as seasonal space heating efficiency, making it perfect for eco-conscious homeowners
  • An energy-efficient boiler such as this will save you money on your energy bills over its lifetime
  • The boiler is compact and has a maximum installed weight of just 29.0 Kg, making this a small boiler that’s ideal for installing in a compact cupboard
  • Ideal Logic’s boiler comes with an innovative, easy-to-read digital display that’s backlight
  • The pressure gauge is prominent, making the boiler easy to maintain and check
  • It also has frost protection, which is great for British winters, as it will stop the boiler and its pipework from freezing over during the colder months Best Combi Boiler 2021 - Top 5 Best boilers to buy right now Compare Boiler Quotes
  • Homeowners can convert the Ideal Logic C30 to LPG fuel using Ideal Heating’s conversion kit
  • This model can be connected to a maximum of an 8m horizontal flue and a 7.5m vertical flue, meaning it’s perfect for a variety of different properties
  • Alongside the features that come as standard with the Ideal Logic C30, Ideal Heating also offers additional accessories for this model, including a weather compensation kit and a radio frequency programmable digital thermostat
  • Ideal Heating has been making boilers for more than 100 years, so you can rest assured that this is a quality product

Read more: Ideal Logic C30 review

Worcester Bosch 8000 Life and Style

Another high-quality product from the renowned boiler brand Worcester Bosch, the 8000 Life And Style is a replacement for the beloved Worcester Bosch Greenstar CDi Classic.

This new Worcester Bosch boiler retains all of the features of the Greenstar CDi Classic but is a modern update that means that the new model will give homeowners as much, if not more, comfort and satisfaction as its predecessor.

As mentioned above, Worcester Bosch is a highly-respected maker of quality boilers, and, as such, it’s unsurprising that two of the brand’s products appear in this list of the best combi boiler options for 2021. Best Combi Boiler 2021 - Top 5 Best boilers to buy right now Compare Boiler Quotes

The 8000 Life and Style comes as both a combi boiler and a system boiler. The combi boiler version comes in power outputs of 30kW to 50kW, so this is a powerful boiler that will work well for larger properties with big hot water requirements.

Some of the other benefits of the 8000 Life and Style are:

  • The 8000 Life and Style is a wall-mounted gas combi boiler that fits well into any home
  • The sleek, black design sets the boiler apart from others and will look great on any property
  • This Worchester Bosch boiler is also available in white, meaning that you can choose the style that suits your tastes
  • Part of the Greenstar range, the boiler is efficient and includes cutting-edge features
  • These innovative features include a backlit digital display
  • The boiler is quiet and unobtrusive, despite being powerful
  • This modern design can be easily connected to smart heating controls, making this the perfect choice for tech-savvy homeowners
  • It can also be used with the Bosch wireless EasyControl app, meaning owners can change the temperature in their home remotely from a connected smartphone or tablet
  • This is one of the most powerful combi boilers on the market, making it perfect for larger homes with bigger hot water and heating requirements
  • The boiler comes with up to a 12-year guarantee for peace of mind
  • While the 8000 Life and Style is one of the most costly models on this list, it has a lot of additional style features and functions that make it worth the money for modern homeowners with large properties who want a combi boiler

Read more: Worcester Bosch 8000 Review

Alpha E-Tec Best Combi Boiler 2021 - Top 5 Best boilers to buy right now Compare Boiler Quotes

Alpha has been creating unique and powerful boilers and heating solutions for over 50 years, making the brand a comparative newcomer to the market.

After all, Alpha has around half the experience of some of the other boiler manufacturers on this list, but that doesn’t mean that the brand isn’t creating high-quality, unique boiler products that are more than capable of competing with the products from the brand’s more seasoned competitors.

The Italian boiler manufacturer is beloved by British homeowners and boiler engineers for its style and quality, which is epitomised in the Alpha E-Tec combi boiler. Best Combi Boiler 2021 - Top 5 Best boilers to buy right now Compare Boiler Quotes

This compact boiler is the smallest that Alpha has ever created, and designed with discretion in mind. It comes in a bright white finish so that it looks good and functions great.

Some of the other benefits of the Alpha E-Tec are:

  • The Alpha E-Tec combi boiler has a combined condensate and pressure relief valve connection, as well as a cutting-edge stainless steel heat exchanger
  • It also has a zinc-plated expansion vessel, which is designed to prevent corrosion and improve the longevity and performance of your new combi boiler
  • This boiler model comes in two power outputs: 28.3 kW and 32 kW, making this a powerful combi boiler that will work well for medium to large homes
  • The Alpha E-Tec combi boiler comes with a 7-year warranty as standard
  • This pristine boiler is compact and will look great in most homes
  • Alpha has designed the E-Tec combi boiler for ease of both use and maintenance
  • As such, the parts are easily accessible for checking or maintaining the boiler
  • Also, the digital display and prominent dials on the front is easy to view
  • Alpha’s boilers are respected around the world, and as such, homeowners will know that they’re getting quality and innovation

Read more: Alpha E-tec review

Best combi boiler for a 1-2 bedroom home

A small property with just 1 or 2Best Combi Boiler 2021 - Top 5 Best boilers to buy right now Compare Boiler Quotes  bedrooms only needs a small boiler, so you can choose a combi with around 20 to 27 kW power output.

The best boiler for a small flat, apartment or home is

Get a price on this boiler here

Best combi boiler for a 2-3 bedroom home

Slightly larger homes with 2 or 3 bedrooms, which have larger hot water and heating needs, could benefit from a more powerful combi boiler.

Usually, the average home of this size could benefit from a combi boiler with a capacity of between 28 and 35 kW.

The best combi boiler model for a 2 to 3 bedroom home is:

Get a price on this boiler here.

Best combi boiler for a 3-4 bedroom home

A house with 3 to 4 bedrooms is the largest size of property that is usually recommended for a combi boiler.

As a 3 to 4 bedroom home will have greater hot water requirements and more radiators, you will need a powerful combi boiler with 36 kW and above.

The best boiler model for a 3 to 4 bedroom home is:

Get a price on this boiler here.

Still unsure what combi boiler is best for you?

If you’re still unsure about the make, model and size of combi boiler that will work best in your property, then ask a Gas Safe registered heating engineer.

Compare Boiler Quotes has boiler experts and Gas Safe installers who can guide you to the best new combi boiler for your home and lifestyle, so you get the best solution.

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Best boilers – Our conclusion:

Choosing the best boiler for your home can be challenging, as there are so many different options on the market to choose from, and all of the boiler manufacturers out there think that they offer the best boilers.

Best Combi Boiler 2021 - Top 5 Best boilers to buy right now Compare Boiler Quotes

So, if you’re searching for a new combi boiler in 2021, then you need to make sure that you get the perfect solution, at the best possible price.

If you check out the Compare Boiler Quotes online boiler price calculator, you can find your dream combi boiler at a price that suits you.

We can include the cost of getting a Gas Safe registered engineer to install your boiler so that you know how much everything will be before you commit.

Having the boiler installation costs and the boiler prices in front of you allows you to choose the best combi boiler for your property and budget.

Also, our extensive boiler range means that you will probably be able to find your dream new boiler and get the best boiler price when you shop with Compare Boiler Quotes.

We also offer some great boilers on finance deals for you to pay monthly and spread the cost of your boiler.

If you’re still unsure which combi boiler will be best for your home, get new boiler quotes in 20 seconds from nationwide boiler companies below:

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