Best Boiler 2018 – Buyer’s Guide

Investing in a decent boiler could save you lots of money on your bills and will keep you warm and toasty in the winter months, without costing you a fortune.

Though it may not be one of the most exciting purchases of your life, the one you have is very important.

We have put the top boilers through their paces to see which ones are the right buy for you. We have compared them to their type, output, efficiency and fuel type to get the right suit for your home.

The Best Boilers – Our Top Picks

Best Combi Model: Worcester Greenstar 30i Combi Boiler
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Worcester Greenstar 30i Combi
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  • Type: Combination
  • Output: 30kW
  • Efficiency: A-rated boiler
  • Fuel type: Natural Gas
Best Open Vent Model: Vokera 886 White Mynute
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Vokera 886 White Mynute
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  • Type: Open Vented
  • Output: 20kW
  • Efficiency: A-rated boilers
  • Fuel type: Natural Gas
Best Compact Model: Cerapur Compact
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Junkers Bosch Cerapur Compact 28 kW zwb28
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  • Type: Condensing
  • Output: 28kW
  • Efficiency: A-rated
  • Fuel type: Natural Gas

Best Combi Boilers

Baxi Platinum Boiler

Baxi are another well-known boiler brand and this time they have provided a compact, watertight boiler known for reliability and for also sourcing natural gas.

Despite being a compact boiler it is a condensing boiler and is very easy for the installer to assemble. The great thing about the Platinum range is that there are add-ons available such as ways to increase performance or utilise wireless apps to help you monitor and control all of your usage.

Despite it being small in size, it has a powerful output with 28kW, it is suitable for medium sized households and is known for being reliable. It weights 30 kilograms and is 29.9 x 40 x 70cm in dimensions.

The item is easy to use, with a digital display and it also has A+ rated energy ensuring that you’ll be privy to high efficiency. The durable product is one that can be installed and save you money right away, this is one the best combo boilers on the market and for the price, it is an investment.

We like

  • It is an A Rated Boiler
  • High Efficiency
  • Has a Digital Display
  • Is powerful with 28kW
  • Add-ons available and ways increase performance
  • Easy to install
  • Compatible with Nest Smart Heating

We disike

  • It is expensive

Final Verdict

The great thing about the Baxi Platinum range is that there are add-ons available such as ways to increase performance or utilise wireless apps to help you monitor and control all of your usage.

+ Specifications

  • Type: Combination
  • Output: 28 kW
  • Efficiency: A Rated
  • Fuel Type: Natural Gas

Heatline by Vailliant

The highly celebrated boiler offers the best of all worlds with high efficiency, reliability and a display that is easy to use- on top of all that it is more than reasonably prices, sitting at under £600.

Vaillant are renowned for being a prestigious boiler provider and that’s because they constantly provide user-friendly and highly efficient boilers, the Heatline is no different in that sense. It is a versatile boiler that manages to incorporate every aspect we need with it being easy to use, simple to install and a lot of power behind it.

The condensing combi comes in two options- either 24kW or 28kW depending on what you need, this can be dependent on the size of your home. This boiler is perfect for a small to medium sized house but if you do not require something this powerful then you may wish to opt for the 24kW product.

The A-rated boiler comes with a digital display that has full diagnostics and can be easily used, it even has a built-in frost protection feature. The boiler itself has great efficiency ensuring that you save money in the long term. It has side-panels and can be easily fit by a certified gas installer.

We like

  • It is an efficient A rated boiler
  • Compact Design
  • Has built-in frost protection
  • Great value

We disike

  • We can't find one!

Final Verdict

Outstanding combi boiler with 5 Star reviews. Affordable and high quality.

+ Specifications

  • Type: Combination
  • Output: 28 kW
  • Efficiency: A Rated
  • Fuel Type: Natural Gas

Worcester Greenstar 30i Combi

The Worcester Greenstar 30i Combi is the best combi-boiler available at the moment. With popular controls and a flue bundled into one package, you will have everything you need to get installed quickly. The Worchester Greenstar 30i has an A-rated energy efficiency level and is in compliance with new legislation covering new boilers and other appliances.

We like

  • ErP compliant pump
  • A-rated boilers
  • Able to service up to 4 bedrooms and 1 bathroom
  • Great quality

We disike

  • Expensive

Final Verdict

With an output of 30kW, the Worchester Greenstar 30i combi-boiler’s suitable for small to medium homes and can supply water and heating to four bedrooms and one bathroom easily.

+ Specifications

  • Type: Combination
  • Output: 30kW
  • Efficiency: A-rated boiler
  • Fuel type: Natural Gas

+ Downloads

Worcester Greenstar 30i user manual

Download

Vaillant Ecotec Pro 28

The Vaillant Ecotec Pro 28 is a condensing combi at its best. With a powerful output of 28kW, it will be a perfect suite for smaller houses and flats. It delivers powerful performance while being A-rated energy efficient. It offers a high-efficiency pump and easy to use backlit interface display with intelligent self-setting gas combustion.

The Vaillant Ecotec Pro has removable side panels and easy-to-use settings to keep you in full control.

We like

  • A-rated boiler
  • Compact dimensions
  • Awarded Quiet Mark and Which? Best Buy
  • Features a high efficiency pump which reduced energy usage and creates lower standby losses
  • Built-in 2 stage frost protection to ensure optimal performance all year round

We disike

  • Expensive

Final Verdict

Its sleek design makes it the perfect choice to suit to any home.

+ Specifications

  • Type: combination
  • Output: 28 kW
  • Efficiency: A-rated
  • Fuel type: Natural Gas

+ Downloads

Vaillant Ecotec Pro 28 user manual

Download

Potterton Titanium HE Combi

The Potterton Titanium HE Combi is great for any size home. With a wall mounting plate for easy installation and extensive flue options of up to 20 meters. The Potterton Titanium HE Combi delivers instant hot water and heating effortlessly. It is fully modulating which regulates the output to suit your demands and homes making it very energy efficient.

With an output of 33kW, the Potterton Titanium HE Combi is economic to run and powerful for any home. It comes with easy-to-use controls which allow for heating and hot water to be controlled separately. This model is energy efficient and powerful to keep your home warm and toasty.

We like

  • 7 year warranty
  • Comes with Flue and Clock
  • A-rated efficiency

We disike

  • Quite heavy for this size

Final Verdict

This model is energy efficient and powerful to keep your home warm and toasty.

+ Specifications

  • Type: Combination
  • Output: 33kW
  • Efficiency: A-rated boilers
  • Fuel type: Natural Gas

+ Downloads

Potterton Titanium HE Combi user manual

Download

Best Open Vent Boilers

Vokera 886 White Mynute

The Vokera 886 White Mynute is an A-rated, open vent model that is simple to use and powerful for your home. This one is only for central heating but can produce hot water when a water cylinder is installed alongside. It complies with new legislation for efficiency boasting 90.5% efficiency for your home. It has versatile fueling options and can be converted to LPG if needed. It provides flexible installation with a pipe from the top and one from the bottom.

The Volkera comes with a rear flue option, making installation and checks even easier.

We like

  • Energy Rating: A
  • Compatible with solar thermal
  • 2 year warranty

We disike

  • Small output

Final Verdict

With an output of 20kW, this is suitable for flats or small homes, suitable for homes with around 10 radiators and one bathroom.

+ Specifications

  • Type: Open Vented
  • Output: 20kW
  • Efficiency: A-rated boilers
  • Fuel type: Natural Gas

+ Downloads

Vokera 886 White Mynute user manual

Download

Best Compact Boilers

Junkers Bosch Cerapur Compact 28 kW zwb28

This compact system has earned the title of the top compact model. Though it is small, this boiler is still able to put out a surprising 28kW and will have no problems keeping your home warm and cozy.

This boiler is perfect for a family home where there isn’t enough space for a full sized boiler, but without compromising on quality, power or reliability.

We like

  • Small and compact
  • Easy to use

We disike

  • Expensive

Final Verdict

This compact boiler will fit perfectly into even the smallest of spaces, and is perfect for a small family home that still needs the power of a large boiler.

+ Specifications

  • Type: Condensing
  • Output: 28kW
  • Efficiency: A-rated
  • Fuel type: Natural Gas

+ Downloads

Junkers Bosch Cerapur Compact user manual

Download

Boilers Buying Guide

Boilers are integral to the functioning of any home. It’s likely to be one of the most expensive items you purchase so it’s important to do your research before you purchase. Buying a reliable boiler is essential because no one wants to face cold showers and no heating, especially when it comes to the winter months.

The right boiler for your home depends on your central heating system. The majority of UK homes have a gas central heating system so many boilers are suited to accommodate this.

Get prepared with our buying guide to help you through the whole process, from what type to pick all the way through to installation. These are the things you need to be aware of when buying a new boiler for your home.

Here are some things to consider before you buy:

Type of fuel

Most UK homes already use a gas central heating system, equipped with a gas boiler. Even though gas is a very common source of energy, there are other options, including oil boilers, liquid petroleum gas boilers, or a wood-burning stove with a back boiler. It’s probably easiest to get your hands on a gas boiler if that is what is already in your home.

Types of Boilers

Combination (combi) boilers

These are gas boilers that provide heat for your radiators and hot water when needed. These are usually suited for larger homes with multiple rooms and bathrooms. They use cylinder storage meaning they are usually stored in an airing cupboard. With combi boilers, you usually have to wait for the water to be heated before you can use it.

Heat only Boilers (open vent)

These also use gas which is connected to a hot water storage system. They provide central heating and hot water through a boiler and water tanks stored in a loft. The storage cylinder is usually stored in an airing cupboard. Open vent boilers have high water flow rate which is great for quick showers. Once the hot water runs out you will need to wait for it to heat back up again. They are effective but take up a large amount of room in your home.

Efficiency

If your household is running on gas then your boiler will amount to 60% of all your homes CO2 emissions. And this affects your wallet too. If you are looking to cut down costs on your energy bill and lower your carbon footprint then the boilers you get for your home is crucial.

Many people tend to just use the same boiler from when they moved into their house, but old boilers are less economical and effective. Upgrade to a new model to cut back on your bills and reduce your emissions. With a new model you could potentially save up to £300 a year on your energy bill.

Since 2010, boilers have become significantly more energy efficient. All boilers have to meet the A-rated guideline or be at least 88% efficient.

Boilers Features

Boilers don’t really have any snazzy features and high tech gadgets, what they do have are variable heating controls and settings. These put you in full control of your heating. You can decide on the heat setting and timer for automatic heating and hot water.

Boilers Installation

Never try to install boilers yourself. It is dangerous and could cause a lot of damage to yourself, those around you and your home. When you decide on the right boiler get in touch with a heating engineer from the Gas Safe Register to install boilers for you safely.

Some gas providers could suggest that they replace your boilers for you, without giving you a choice as to which boiler or model you want to get. This is because most heating engineers are adept at fitting specific boiler models and brands and this is the one they offer. If this is not the option you want to take then find a suitable heating engineer in your area. Make sure to check that they are able and competent to fit the boiler you want.

Boilers Maintenace

Once you have bought a boiler, regular maintenance is needed to make sure it is working efficiently and safely.

FAQS

How much do boilers cost?

The price of a boiler depends with the model, brand and type of boiler it is. The rough average price of a new boiler is around £1,500 to £4,000.

What size boiler do I need to get?

Most flats and average sized home with around 10 radiators, will need a boiler than a 24kW to 27kW would be fitted. For a medium sized home, around 15 radiators then the 28 to 34kW boiler will be fitted.

How much does it cost to replace a boiler?

The price of replacing a boiler depends on the boiler you want to get or your gas provider (if they can fit a new one for you). If you are only replacing internal parts of your boiler then it can cost around £250 to £300, depending on the part you need.

What boiler is better for a large home?

For larger homes, a combi 28 to 34kW boiler is suitable. It’s important to get the right sized boiler appropriate for your size home so make sure you do your research to get the right fit.

Are all new boilers energy efficient?

Yes, all new boilers made after 2010 have an A-rated efficiency level and are 88% efficient.

Are you planning to buy a new boiler? Which one will suit your home the most? Let us know in the comments below.