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5 Benefits to Choosing a Combination Boiler for Your Home

 Combination Boiler


When choosing a new boiler for your home, there are many options available such as choosing between combination, system and regular boilers.

So what is a combination boiler? What are the benefits?

To answer these questions and more, this guide will tell you everything you need to know about combination boilers, including the top 10 combination boilers on the market today.

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What’s in this guide?

Top 10 Combination Boilers

1. Glow Worm Betacom4 24kW Combination Boiler

Glow Worm

Type: Combination Boiler

Power output: 24kW

Pricing: £478.80

Supplier: City Plumbing

Trustpilot score: 3/5

Glow Worm offers its customers a wide range of boilers including their Betacom4 combination boiler, which has an output of 24kW that can easily power a two or three bedroom home with one bathroom.

This boiler could be an affordable solution for many homes, which comes with a 5-year warranty and many attractive factors like LCD displays.

✔ High efficiency

✔ Made from high-quality materials

✔ Modern LCD display

✔ Increased boiler efficiency

✔ Contemporary and sleek design

✔ Compact size

✔ Low cost

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2. Ideal Esprit Eco2 30kW Combination Boiler

Ideal Boilers

Type: Combination Boiler

Power output: 30kW

Pricing: £642

Supplier: City Plumbing

Trustpilot score: 3/5

Ideal offers their customers boilers which are recommended by the energy savings trust, with a compact size and can fit within a kitchen cupboard.

These efficient and reliable boilers can help you to save money on your bills by having a high performance, and they are easy to install.

30kW boilers are powerful enough to be able to heat a two or three bedroom home with up to two bathrooms.

✔ Compact size

✔ 5-year warranty

✔ Easy installation

✔ Frost protection

✔ Lightweight

✔ Award-winning

✔ Endorsed by the energy savings trust

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3. Viessmann Vitodens 100-W 26kW Combination Boiler


Type: Combination Boiler

Power output: 26kW

Pricing: £1,116

Supplier: City Plumbing

Trustpilot score: 3/5

Viessmann is a company who has been around since the mid-1960s and can offer their customers many home products for heating such as gas boilers, heat pumps, fuel cells, solar and oil boilers.

This boiler gives you a 26kW output which is appropriate for a two bedroom home and comes with an extendable 5-year warranty.

✔ 5-year warranty

✔ LCD display

✔ Easy access

✔ 10-year warranty available

✔ A range of products on offer

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4. Baxi Platinum 33kW Natural Gas Combination Boiler


Type: Combination Boiler

Power output: 33kW

Pricing: £1,132.80

Supplier: City Plumbing

Trustpilot score: 3/5

Baxi is a well-known supplier of boilers in the UK, with a history that stretches back to manufacturing in 1866, making them one of the oldest running companies in Britain.

This reliable platinum boiler runs on natural gas and will give you 33kW of power, which can quickly help you to heat a three bedroom home with up to two bathrooms.

It also has a high flow rate at a massive 16 litres per minute, making it a premium choice for many homeowners.

✔ High energy output

✔ Excellent flow rate

✔ A-rated for efficiency

✔ Endorsed by the energy saving trust

✔ Adapts to your energy needs

✔ Frost thermostat included

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5. Worcester-Bosch Greenstar 36kW Combination Boiler

Worcester Bosch

Type: Combination Boiler

Power output: 36kW

Pricing: £1,408.22

Supplier: City Plumbing

Trustpilot score: 3/5

From Worcester-Bosch, the Greenstar 36kW combination boiler features a power output of energy, which is one of the highest on the market today and can allow you to meet high water demands.

You can still fit your boiler within a cupboard thanks to the compact design, but without needing to sacrifice on power.

✔ 5-year guarantee

✔ A-rated for energy efficiency

✔ LCD boiler display

✔ Built-in frost protection

✔ Small size

✔ Intelligent control options

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6. Vaillant ecoTEC Plus 938 38 kW Natural Gas Combination Boiler


Type: Combination Boiler

Power output: 38kW

Pricing: £1,683.50

Supplier: City Plumbing

Trustpilot score: 3/5

Vaillant offers its customers combination, system and regular boilers, as well as cylinders and renewable product options such as air source heat pumps, ground source heat pumps and solar products.

Their ecoTEC range, as the name suggests, is highly efficient in terms of performance as well as water flow, with many additional benefits like a possible 10-year guarantee.

✔ Modern design

✔ Eco-friendly

✔ 20 litre per minute of water flow

✔ Frost protection included

✔ Accredited by Quiet Mark

✔ Manual pressure gauge

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7. Ideal Vogue Max 40kW Combination Boiler

Ideal Boilers

Type: Combination Boiler

Power output: 40kW

Pricing: £1,279.99

Supplier: Screwfix

Trustpilot score: 2/5

Ideal is another well-known boiler manufacturer, with over 100 years of experience in the boiler industry, having developed the design of both domestic and commercial heating for homes and businesses.

This 40kW combination boiler is powerful enough to be able to heat a four or five bedroom home with two or three bathrooms, made from premium materials and a high-efficiency rating.

Some of the main advantages of choosing this boiler are that it features a modern design, large colour display and visible pressure gauge.

✔ Frost protection

✔ 40kW output

✔ 12-year guarantee

✔ High energy efficiency

✔ Stainless steel

✔ LCD display

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8. Worcester-Bosch Greenstar 42kW Classic Combination Boiler

Worcester Bosch

Type: Combination Boiler

Power output: 42kW

Pricing: £1,999.99

Supplier: Screwfix

Trustpilot score: 2/5

This boiler from Worcester-Bosch is one of the most powerful domestic boilers on the market today, with the capacity to power a large home as well as average and smaller homes too.

According to a review on the Screwfix website, this boiler can power your radiators, showers and underfloor heating all at the same time.

✔ 5-year guarantee

✔ 42kW output

✔ A rated for efficiency

✔ A 17.2-litre water flow rate

✔ For large properties

✔ Easy installation

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9. Viessmann Vitodens 111-W 35kW Combination Boiler


Type: Combination Boiler

Power output: 35kW

Pricing: £2,696.05

Supplier: Travis Perkins

Trustpilot score: 3/5

This gas condensing combination boiler from Viessmann features a 35kW output which is perfect for both small and medium-sized homes, as well as houses with four bedrooms and two bathrooms.

Travis Perkins claims that you can fit this type of boiler either in your bathroom, utility room or in your kitchen, and will give you a continuous supply of hot water whenever you need it.

✔ 5-year guarantee

✔ LCD display

✔ A rated efficiency

✔ 35kW display

✔ Easy access

✔ User-friendly dials

✔ 46-litre capacity

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10. Vaillant Ecofit Pure 835 Combination Boiler


Type: Combination Boiler

Power output: 35kW

Pricing: £1,250

Supplier: Wickes

Trustpilot score: 3/5

From Vaillant, the Ecofit Pure 835 Combination boiler is an affordable option for larger homes who need a powerful boiler, but for an inexpensive price in comparison to many other models, with premium materials.

Powered by natural fuel, some of the benefits of choosing this boiler are that you can benefit from a low noise, high energy output and high energy efficiency.

✔ 2-year guarantee

✔ Low noise

✔ Compatible with solar

✔ A rated for efficiency

✔ LED display

✔ Easily maintained

✔ Easy to install

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5 Benefits of Choosing a Combination Boiler

1. Combination boilers are generally cheaper

Because of the simplicity of combination boilers, which take water from the mains and heats it for use in your showers and taps, installing a combination boiler will typically be cheaper than alternatives.

Plus, you won’t have to pay for a hot water cylinder or a cold water tank which you would require with a regular boiler or with certain system boilers.

As these boilers combine both your central heating and hot water, it’s useful all in one solution for your home.

2. Get your hot water instantly

One of the disadvantages of choosing a system boiler is that your boiler has to utilise a hot water cylinder to heat your water, so once it runs out, you have to wait for more water to be heated up.

On the other hand, a combination boiler takes its water from the mains, which means you can get hot water instantly.

You also won’t run out of hot water, and your cold water will be safe to drink because it’s taken directly from the mains.

3. Combination boilers have a compact size

Many combination boilers will give you the advantage of having a slim and sleek design, which often means that they can be installed in a small, tidy space such as your kitchen cupboard.

This can help you save on space, especially considering you won’t have to sacrifice any loft space for a cold water tank or hot water cylinder.

4. They are easier to maintain and service

Making sure that you make your boiler last as long as possible is an essential part of keeping your home safe and warm, which you can do by keeping your boiler maintained.

Because combination boilers are a popular choice, it means that most engineers will know how to service and maintain your boiler.

5. Combination boilers are efficient

Combination boilers are a more efficient choice for many households because they are less likely to suffer from issues to do with pressure, as water is taken from the mains, and because water isn’t stored in a tank, it won’t be at risk for rust or any particulates.


What is a combination boiler?

A combination boiler is one of the main three types of boiler, which traditionally takes water from your mains and heats your water for your taps and showers.

They are highly efficient in terms of energy output, they have a compact design, and they can be installed in tidy spaces such as your kitchen cupboard.

How does a combination boiler work?

Combination boilers take water from the mains and heat it instantly, then delivers it to you as soon as you need it, with the same pressure as your mains.

They are known as ‘combination’ boilers because they heat both your radiators or underfloor heating, as well as your hot water.

Is a combination boiler less expensive than other boilers?

While a combination boiler might cost the same as other types such as system or regular boilers, you won’t have to worry about purchasing a hot water cylinder or a cold water tank.

This can make combination boilers overall cheaper than other alternatives.

Plus, combination boilers are easier to maintain and service, as most engineers have experience with these types of boilers.

What type of boiler is the best?

The best type of boiler for you and your home might depend on several factors, including the following points:

Combination Boiler

  • Space saving
  • Cost-effective
  • Takes water from mains
  • Won’t run out of hot water
  • Ideal for smaller spaces
  • Easy installation

System Boiler

  • Perfect for homes with more than one bathroom
  • Have hot water from your taps at the same time
  • Money saving option
  • There are built in components available

Regular Boiler

  • Suitable for large homes with high water needs
  • Perfect for when there’s low water pressure
  • Compatible with solar and renewable systems

Where can I find the best boilers?

There are many available options when it comes to suppliers for your combination boiler.

At the top of this page, you can find some of the top combination boilers available, as well as where you can find them.

Here are a few examples of where you can find excellent boilers for your home.

  • Screwfix
  • Wickes
  • City Plumbing Supplies
  • Plumb Nation
  • Direct Heating Supplies
  • Wolseley
  • Tool Station
  • Mr Central Heating


In conclusion, there are many benefits to choosing combination boilers, such as the fact that they are economically friendly, as well as a perfect space saving option.

Have you learnt everything you need to know about combination boilers?

Do you want to learn more about combination boilers, or your boiler options?

Fill out the form at the top of the page to get a quick customised quote, or you can check out the ExpertSure guides here.

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