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5 Benefits to Choosing a Combination Boiler for Your Home (2024)

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 Combination Boiler


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

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

This guide will tell you everything you need to know about combination boilers, including the top 10 combination boilers you can buy on the market today.

Ready to get going?

What’s in this guide?

Top 10 Combination Boilers

1. Glow-Worm Micracom 24kW Combi Boiler

Glow Worm

Type: Combination Boiler

Power output: 24kW

Pricing: £641.99 (including VAT)

Supplier: City Plumbing

Glow Worm offers its customers a wide range of boilers including their Micracom 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 and comes with a 1-year warranty.

✔ High efficiency

✔ Made from high-quality materials

✔  Can fit in cupboards

✔ Increased boiler efficiency

✔ Contemporary and sleek design

✔ Compact size

✔ Low cost

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2. Ideal Esprit Eco2 24kW Combination Boiler

Ideal Boilers

Type: Combination Boiler

Power output: 24kW

Pricing: £797.99 (including VAT)

Supplier: City Plumbing

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. Plus, they’re easy to install.

24kW boilers are powerful enough to be able to heat a two- or three-bedroom home.

✔ 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: £1,435.19 (including VAT)

Supplier: City Plumbing

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 a 2-year warranty.

✔ LCD display

✔ Easy access

✔ A range of products on offer

✔ Compact and quiet

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4. Baxi Assure 30 KW Combi Boiler


Type: Combination Boiler

Power output: 30kW

Pricing: £1,419.59 (including VAT)

Supplier: City Plumbing

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 boiler runs on natural gas and will give you 30kW of power, which can quickly help you to heat a three-bedroom home.

It also has a high flow rate at a massive 15 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

✔ 2-year warranty

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5. Worcester Bosch Greenstar 36CDi Compact 36kW Combi Boiler

Worcester Bosch

Type: Combination Boiler

Power output: 36kW

Pricing: £1,957.80 (including VAT)

Supplier: City Plumbing

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.

✔ 7-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: £2,079.59 (including VAT)

Supplier: City Plumbing

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 being solar-compatible and having a multi-sensor system.

✔ 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 C40 40kW Combi Boiler 

Ideal Boilers

Type: Combination Boiler

Power output: 40kW

Pricing: £1,814.48 (including VAT)

Supplier: PlumbNation

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 has 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

✔ 10-year guarantee

✔ High energy efficiency

✔ Stainless steel

✔ LCD display

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8. Worcester Bosch Greenstar 8000 Life 40Kw Lpg Combi Boiler

Worcester Bosch

Type: Combination Boiler

Power output: 40kW

Pricing: £2,137.50 (including VAT)

Supplier: City Plumbing

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.

This boiler can power your radiators, showers, and underfloor heating all at the same time.

✔ 10-year guarantee

✔ 40kW output

✔ A rated for efficiency

✔ For large properties

✔ Easy installation

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9. Viessmann Vitodens 111-W 35kW Combination Boiler


Type: Combination Boiler

Power output: 35kW

Pricing: £2,101.97 (including VAT)

Supplier: Screwfix

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.

This type of boiler can fit in 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

✔ 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: £1,660

Supplier: Wickes

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

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 maintain

✔ 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 heat it for showers and taps, installing them 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 a 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. 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 slim and sleek designs, which often means that they can be installed in a small space, such as your kitchen cupboard.

This means 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.

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 pressure issues, as water is taken from the mains. Also, 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, have a compact design, and 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 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 best combination boilers available and 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
  • PlumbNation
  • Wolseley
  • Toolstation
  • Mr Central Heating


There are many benefits to choosing combination boilers, such as they’re economically friendly and a perfect space-saving option.

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 Ecopreneurist guides here.

Written By

Georgia Photo


Georgia is passionate about environmental technology, and is a cherished Ecopreneurist regular writer.

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