Best Boiler 2017 – 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.

ProductImageTypeOutputEfficiencyFuel TypePriceRatingBuy Now
Worcester Greenstar 30i Combi worcester-greenstar-30i-combi-boiler-packCombination30kWA-ratedNatural Gas£££9.7/10
Potterton Titanium 33kW HE Combi potterton-titanium-33kw-he-combi-boilerCombination33kWA-ratedNatural Gas£££9.6/10
Vokera 886 White Mynutevokera-886-white-mynute-20-kwOpen Vented20kWA-ratedNatural Gas££9.4/10
Vaillant Ecotec Pro 28vaillant-ecotec-pro-28-combination-boiler-with-flue-kitCombination28kWA-ratedNatural Gas£££9.5/10
Cerapur Compact Condensing28kWA-ratedNatural Gas££9/10

Top Combi Model

Worcester Greenstar 30i Combi Review

Worcester Greenstar 30i Combi Boiler Pack Review

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.

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Pros and Cons
We Liked:
  • ErP compliant pump
  • A-rated boilers
  • Able to service up to 4 bedrooms and 1 bathroom
  • Great quality
We Didn't Like:
  • Expensive
Worcester Greenstar 30i Combi
97 %

Our 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.

Worcester Greenstar 30i Rating: 9.7/10

Specifications & Downloads


  • Type: combination
  • Output: 30kW
  • Efficiency: A-rated boilers
  • Fuel type: natural gas

Worcester Greenstar 30i user manual

Download the Worcester Greenstar 30i user manual here.

Potterton Titanium HE Combi Review

Potterton Titanium 33kW HE Combi Boiler Review

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.

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Pros and Cons
We Liked:
  • 7 year warranty
  • Comes with Flue and Clock
  • A efficiency rating
We Didn't Like:
  • Quite heavy for this size
Potterton Titanium HE Combi
96 %

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

Potterton Titanium HE CombiRating: 9.6/10

Specifications & Downloads


  • Type: combination
  • Output: 33kW
  • Efficiency: A-rated boilers
  • Fuel type: natural gas

Potterton Titanium HE Combi user manual

Download the Potterton Titanium HE Combi user manual here.

Top Open Vent Model

Vokera 886 White Mynute Review

Vokera 886 White Mynute 20 kW Open Vent Boiler Review

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.

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Pros and Cons
We Liked:
  • 93% efficiency Rating (A)
  • Compatible with solar thermal
  • 2 year warrant
We Didn't Like:
  • Small dimensions
Vokera 886 White Mynute
94 %

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

Vokera 886 White Mynute Rating: 9.4/10

Specifications & Downloads


  • Type: open vented
  • Output: 20kW
  • Efficiency: A-rated boilers
  • Fuel type: natural gas

Vokera 886 White Mynute user manual

Download the Vokera 886 White Mynute user manual here.

Vaillant Ecotec Pro 28 Review

Vaillant Ecotec Pro 28 Combination Boiler Review

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.

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Pros and Cons
We Liked:
  • A rated
  • Compact dimensions
  • Awarded Quiet Mark and Which? Best Buy awarded
  • 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 Didn't Like:
  • Expensive
Vaillant Ecotec Pro 28
95 %

Our Verdict: Its sleek design makes it the perfect suit to any home.

Vaillant Ecotec Pro 28 Rating: 9.5/10

Specifications & Downloads


  • Type: combination
  • Output: 28 kW
  • Efficiency: A-rated
  • Fuel type: natural gas

Vaillant Ecotec Pro 28 user manual

Download the Vaillant Ecotec Pro 28 user manual here.

Top Compact Model

Boiler Cerapur Compact 28 kW zwb28

Boiler Cerapur Compact reviewThis 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.

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Pros and Cons
We Liked:
  • Small and compact
  • A energy rating
  • 28kW output
We Didn't Like:
  • Expensive
Boiler Cerapur Compact
90 %

Our Verdict: This little 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.

Boiler Cerapur Compact Rating: 9/10

Specifications & Downloads


  • Type: condensing
  • Output: 28kW
  • Efficiency: A-rated
  • Fuel type: natural gas

Boiler Cerapur Compact user manual

Download the Boiler Cerapur Compact  user manual here.


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.

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.


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.


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.

We will be happy to hear your thoughts

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