Which is the best combi boiler to buy right now?
The best combi boiler to buy is very dependent on your home but we’ve picked out the best based on the average home in this comprehensive guide to help you choose between the best boilers available.
Some combi boilers aren’t something that everyone knows something about so we’ve picked out some of the best combi boilers on the market from leading boiler brands.
You may have heard of some of the best gas combi boiler brands such as Worcester Bosch or Ideal, but there are some other excellent brands out there too making great combination boilers that provide instant hot water as and when you need it.
Best combi boiler in 2022 – The best combi boilers this year so far
There are at least 100 different replacement combi boilers available from different boiler brands, but we’ve managed to whittle it down to the 7 best boilers.
We have chosen these natural gas boilers based on numerous things that are key features in combi boilers and obviously taken new boiler costs and value into consideration too. All these latest combi boilers are condensing and super energy efficient.
Best combi boiler reviews – Out reviews on the best combis to buy
Our best combi boiler reviews take into consideration all the most important things to customers such as price, value for money, how good the boiler is at heating hot water and central heating systems, how reliable the boiler is, and the boiler warranty.
We have also considered current reviews of the boiler from sites such as Trustpilot and Which? as this is where customers have already reviewed the product and shared their thoughts.
This is a valuable tool when finding the best gas combi boilers to replace your old boiler
Our top 7 best combi boilers in the UK to buy right now:
- Viessmann Vitodens 050-W combi boiler
- Worcester Bosch 4000 combi boiler
- Worcester Bosch 2000 combi boiler
- Ideal Logic combi boiler
- Worcester Bosch 8000 combi boiler
- Viessmann Vitodens 100-w combi boiler
- Vaillant ecoTEC combi boiler
As you can see from the list of boilers there are 2 brands there that have 2 boilers on our list.
There’s a good reason for this as they make some fantastic boilers which we will pick apart further on in this post to find out why.
Why are these the best new boilers to buy right now?
The main difference between these gas combi boilers is the value for money. They are super reliable and come with great warranties. With energy prices increasing we have obviously taken energy efficiency into account.
You can compare prices online now and get these combi boilers installed the next day by a Gas Safe registered engineer with Boiler Central, all at a fixed price online. Once you have answered a few questions about your home and current heating system you will be provided with a quote for combi boilers suitable for your needs.
Best boiler brands for combi boilers from sales in the UK
As we have picked out different gas combi boilers from certain combi boiler brands, if you are interested in which we believe are the best boiler brands to buy from so you can browse their boiler range then here is our shortlist. As you would expect, Worcester Bosch boilers are top of our boiler brand list of combi boiler manufacturers.
- Worcester Bosch
- Alpha Innovations
Choosing from the best combi boiler brands
All these top combi boiler brands manufacture excellent energy-efficient combi boilers. They all offer a few different ranges, generally from an entry-level boiler to a top-of-the-range boiler, all in different outputs.
This enables them to have a wider reach over the new combi boiler market and offer a boiler suitable for every home in the UK.
Choosing the best combi boilers – How we do it
With years of experience and knowledge, we know exactly what to look for in a good boiler. But we also take into consideration how well a boiler sells and any feedback and review from sites such as TrustPilot.
We know people like to take other people’s experiences seriously and can be a big factor in people’s decision-making when choosing the right combi boiler model. Choosing the right type of central heating system for your home is far more important than picking the best boiler available.
Comparing the best combi boilers – Things we consider
Here is a list of things we take into account when assessing how good a combi boiler is. These are what we believe you should look for in all boilers before considering your replacement.
- Boiler Specifications
- Price of the combi boiler & value for money
- Most reliable combi boilers
- Length of boiler warranty
- Energy efficiency
- Online reviews
- Online reports or issues raised
- Customer service and aftercare
- Can the boiler fit in a kitchen cupboard
The best combi boilers should be the most reliable combis and score highly in all these areas and provide you with years of hassle-free heating and at a great price. Skyrocketing energy prices can also be kept to a minimum too with these energy-efficient combi boilers.
Which are the best boilers in the UK right now?
The best boilers in the UK right now are the combi boilers we have chosen. But that doesn’t mean that the combi boiler is right for your home.
The best gas boiler for your home may be a system boiler or regular boiler, especially if you have a larger home with a hot water tank. Your home is what matters the most when choosing the best gas boiler suitable for your needs.
What is the best combi boiler?
The best combi boiler you can buy at the moment is the Viessmann Vitodens 050-w. We have reviewed this combi boiler and 5 other best combi boilers to help you make a decision which is best for your home.
The next best combi boiler models are the fast-selling Worcester Bosch 4000 and then the 3rd best combi is the Worcester Bosch 2000, which is also a great combi but doesn’t come with the same amount of warranty of features as the Vitodens 050-w.
#1 Viessmann combi boilers – Viessmann Vitodens 050-w
Viessmann combi boilers are some of the best boilers on the UK market, and to take the top spot off Worcester Bosch in our combi boiler review it needed to take something pretty special.
And we believe the Viessmann Vitodens 050-w combi boiler has it all and is the best gas combi boiler available on the market in terms of unrivaled specification and value for money.
Why is the Viessmann Vitodens 050-W the best combi boiler?
In short, the amount of boiler and extras you get for the money with the Vitodens 050-W is unbeatable.
Is this the most reliable combi boiler on the market?
Also, hailing from German giants Viessmann, these combi boilers are the most reliable and come with a massive 10 years warranty as standard all for under £1,800. With its stainless steel heat exchanger and top quality parts, this boiler is great for hassle-free heating all year round
Viessmann 050 best bits and why to buy
- Superb value for money
- Fantastic spec and performance
- Great parts and labour 10 years warranty
- Viessmann are the largest boiler manufacturer in Europe
- Super efficient boilers
- Stainless steel heat exchanger
- Compact and lightweight
- Great new looks
- Great reviews online from customers
- Excellent aftercare service
- Built in Wifi
- Hydrogen ready combi boiler
If you like the sound of this fantastic combi boiler you can get a quote online now with companies such as Boiler Central in under 20 seconds.
#2 Worcester Bosch combi boilers – Worcester Bosch Greenstar 4000
The Worcester Bosch Greenstar 4000 combi boiler came close to being our best combi boiler, but it just got pipped on price.
The Worcester 4000 combi is over £100 more expensive than the Vitodens 050-w, and we actually have it on good authority that the Viessmann is the better and more reliable boiler.
The Worcester 4000 combi is slightly bigger than our winner too, so it loses out in the compact size department too.
Why is the Worcester 4000 the 2nd best combi boiler?
- Excellent spec boiler, and upgrade on the old Greenstar i
- Costs around £1,925 including installation
- Can fit exactly where the old Greenstar i did and be directly replaced
- Can fit in kitchen cupboards but is a bit bigger than others, so do check.
- One of the best selling gas combi boilers so far this year
- comes in 2 outputs of 25kw and 30kw
- Given a which best buy award
- Has a Quiet Mark accreditation for low operating levels
- 10 year warranty from Worcester Bosch (12 available with Boiler Central)
- Easy to install and replace an old combi boiler
- Hydrogen ready boiler
- Easy to use LCD display
- Great aftercare from Worcester Bosch who are one of the best manufacturers
This combi boiler has been a best seller since it arrived. It is a great mid-range combi that will continue to be popular for years to come.
If you think this gas combi boiler is for you then you can get a fixed price quote for full boiler installation now in under 20 seconds with Boiler Central and get 2 years extra free warranty worth £500.
#3 Worcester Bosch combi boilers – Worcester Bosch Greenstar 2000
If you know anything about combi boilers, then you will now be surprised to see another Worcester Bosch combi boiler near the top of our list. And for the first time ever with the Worcester 2000, they have entered the budget boiler market.
If you don’t know anything about combi boilers, then, in short, Worcester Bosch are like the Nike sportswear brand for boilers.
They churn out quality boilers year in year out and have dominated the UK boiler market for over 10 years with their now discontinued Greenstar i combi boiler range. Worcester bosch boiler prices are more than fair too considerin what you get.
Why is the Worcester 2000 the 3rd best combi boiler?
- Great spec with energy and water-saving features
- Fantastic value for money at around £1,695 with installation
- Good warranty at 6 years
- Great online reviews from customers
- Has been a best selling boiler since its release in 2019
- From one of the best manufacturers
- Comes in 2 different outputs of 25kW and 30kW
- Fits in kitchen cupboards
- Quiet Mark accreditation
- Easy to install and maintain – Side panels can be removed
- Great aftercare from Worcester Bosch
- Hydrogen ready
As we have said Worcester Bosch is one of the best manufacturers in the UK, and if you think the Worcester 2000 is the boiler for you then you can get a quote on this boiler now in under 20 seconds online with Boiler Central.
#4 Best gas combi boiler – Ideal Logic combi boiler
The Ideal Logic combi boiler seems to be around forever, and there’s a good reason why it has stood the test of time. It’s a low cost, reliable and compact combi boiler that suits most people’s homes and budgets. It is one of the most installed boilers in the UK and Ideal gas combi boilers are the choice of new-build contractors across the UK due to their energy efficiency.
Why is the Ideal Logic our 4th best combi boiler?
- Great value for money at less than £1,800
- Very reliable boiler
- Comes with a good warranty
- Is compact, one of the best for kitchen cupboards
- Easy to install
- Quiet Mark accreditation
- One of the best selling boilers ever
- Available in 3 different outputs 25kw, 30kw and 35kw
- Hydrogen ready
- Great aftercare
The Ideal Logic combi boiler is a perfect choice for small to medium-sized homes across the UK. You can price one up online in under 20 seconds with Boiler Central now.
#5 Worcester Bosch combi boilers – Worcester Bosch 8000
This combi boiler is the best combi boiler that Worcester Bosch manufacture. The 8000 has everything including style. It is designed the opposite to most combi boiler and made to be on show and not hidden away.
The gloss black style range is quite a thing of beauty, for a boiler anyway. The Worcester 8000 is super powerful, reliable, and comes with a huge 12 years warranty. The only thing that stops this from topping our poll which we are sure you can guess, is the high price tag.
Why is the Worcester 8000 our 5th best combi boiler?
In terms of value for what you actually get with the Worcester 8000 gas boiler, it is good value for money, but essentially, it still can only heat up your hot water and radiators the same as the other combi boilers in this list but it does come with extra power and the 40kw 8000 combi boiler is a top seller.
At a cost of £2,400 with installation, it’s over £700 more than the Worcester 2000 which will do the same job. On the other hand, the 8000 uses premium parts, has built-in Wifi and looks fantastic, and is backed up with a 12-year guarantee.
- Available in 6 different outputs 25kw, 30kw, 35kw, 40kw, 45kw & 50kw
- Hydrogen ready
- Excellent aftercare
- Comes in 2 different colours
The Worcester 8000 is one of the best Worcester Bosch combi boilers ever made in terms of technology, if you can afford the hefty price tag, then get a quote here online in 20 seconds with Boiler Central. If this combi boiler is a bit pricey, why not check out the Worcester 4000 instead.
#6 Best combi boiler – Viessman Vitodens 100-w
The premium combi boiler that is the bigger brother to the Viotdens 050-w makes our list, and for very good reason. It’s a powerful reliable combi boiler with a fantastic 10 years warranty.
This German engineered boiler is reliable as sin and will give you years of hassle-free heating.
One of the main things about the Vitodens 100-w is that it is in direct competition with the Worcester 8000 but is about £150 cheaper.
So if you prefer substance over style, then this is perfect for you.
Why is the Viessmann 100 the 6th best combi boiler?
- Even with a price tag of around £2,250 with installation is still good value
- Long warranty
- Built-in Wifi
- Hydrogen ready
- Extremely reliable
- Excellent aftercare
- Available in 3 different outputs
If you think this boiler is perfect for your home then get a fixed price online now with Boiler Central online in under 20 seconds.
#7 Vaillant combi boilers – Vaillant ecoTEC
Vaillant is another well-known boiler brand that continues to push the boundaries in the search for ever more energy-efficient boilers.
Vaillant combi boilers aren’t the cheapest, but their build quality makes them an excellent choice. Their ecoTEC exclusive with Green IQ is one of the most energy-efficient boilers.
Why is the Vaillant ecoTEC the 7th best combi boiler?
- Super reliable boilers
- One of the most energy-efficient boilers
- Great aftercare
- Long 10 years warranties
- Very powerful combi boilers
- Available in 2 different outputs 35kw and 43kw
- High flow rates of 17.8 litres/min
- Quiet Mark accreditation
Are you looking for one of the best boilers that Vaillant make? Get a great price on this Vaillant boiler online now with fixed quotes in under 20 seconds with Boiler Central.
What makes a great combi boiler for UK homes?
A good combi boiler should produce hot water efficiently and instantly. Energy efficiency is the key as the more efficient it is the lower your gas and electricity bills will be.
A combi boiler must run at over 90% efficiency. Some of the best combi boilers will run at over 95% efficiency.
As manufacturing processes improve and technology advances, combi boilers are becoming more efficient for longer.
Which are the best condensing comb boilers?
if you think that we might be opening a whole new kettle of fish here then you will be glad to know what we have covered the best condensing combi boilers as all the new combis have condensing technology built into them as per Boiler Plus legislation.
This FGHR or flue gas heat recovery system that they use meas that any waste gasses are recirculated back through the boiler to ensure the maximum amount of gas is used up. This is how they acheive over 90% energy efficiency.
Good combi boilers for your home depend on the size and output
Good combi boilers for your home depend on the size of your home and hot water demand.
If your boiler is too big for your home in size and output then you may be using more gas and electricity than necessary, hence making an efficient combi boiler, inefficient.
The same applies to good combi boilers for larger homes. If your combi boiler is too small, then it may have to work overly hard to keep up, therefore costing more on your utility bills.
What is the best combi boiler under £1,000?
The best combi boiler under £1000 is the Worcester 4000 combi boiler. This new boiler was released by Worcester in 2021 and has been their best ever boiler, which is priced in the mid-range bracket for a boiler.
The boiler quote will be over £1000 when you add the cost of a new boiler installation but for a standalone boiler under 1k then this is perfect for many 1-4 bedroom homes. You can get all the best combi boiler deals right now using our recommended installation companies.
Which combi boiler is the most reliable?
The combi boiler that is the most reliable is one from Worcester Bosch, Viessmann, and Ideal boilers. They generally come out on top as the most reliable combis year after year.
Best value boilers and most cost effective?
The best value boilers tend to be mid-range boilers such as these below:
- Viessmann 050-W
- Worcester 2000
- Ideal Logic Plus C30
These are all packed with massive features but also have an attractive price tag to enable us to label these as very good value boilers.
Best central heating boiler that can heat your radiators and hot water efficiently
Choosing the best central heating boiler is quite dependent on your home and your hot water demand.
A boiler that is too powerful is unnecessary and a boiler that isn’t powerful enough will not warm your home’s central heating or hot water to the desired temperatures.
However, for the average home, you should expect to a combi boiler with an output of 30kw would be perfect. Most of the combi boilers in our list such as the Viessmann Vitodens 050-W, the Worcester 2000 and the Ideal Logic all have boilers that have an output of 30kw.
Any of these boilers would be perfect for small to medium-sized homes’ central heating.
if your looking for more powerful 40kw combi boilers for larger homes then you could run up to bathrooms at the same time.
Best gas combi boilers reviews – Our conclusion
As you can see from our review, there is very little between the top combi boilers in the market. It does almost come down to personal preference or recommendation.
The Viessmann Vitodens 050-W has a much better specification for the money, but the Worcester Bosch 2000 has the boiler brand edge.
One thing you will definitely need to take into consideration is who you get to install your new boiler. You need to ensure they are Gas Safe registered and we can recommend that you use one of our best boiler installation companies by simply clicking get a quote and answering up to 10 clickable questions which take less than a minute with no personal information given.
If you are still unsure which model you should get from each range, simply use Boiler Central’s online quote tool and get a boiler that is perfect for your home in under 20 seconds by clicking get a quote now.