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  • May 12, 2020

Best 30kw Combi Boilers

Best 30kw Combi Boilers

Best 30kw Combi Boilers 150 150

What is the best 30kW combi boiler?

If you are looking for the best 30kW boilers on the market then, this is the guide for you.

We will look at what homes a 30kW combi boiler is most suited for, the advantages and disadvantages of a 30kW boiler and different boilers in order of the best to last.

We like to keep things to the point so you get factual information so that you can purchase the best 30kW combi boiler for your home.

What size home is a 30kW combi boiler suited for?

A 30kW boiler is best suited for a small to medium size property, powering around 15 radiators which usually reside in homes with 1-4 bedrooms.

Home size is harder to gauge as more new build properties cram 4 bedrooms into a property that may be used to have 2 larger bedrooms, so the best way to gauge if a 30kW boiler is suitable for your home is by the number of radiators. As said above, you can power up to 15 radiators with a 30kW combi boiler.

How many radiators can a 30kW boiler run?

As stated above, in general, a 30-kilowatt combi boiler should easily be able to run between 14-18 radiators depending on the make and model of the boiler. As an average rule of thumb, you should be looking at 15 radiators.

In our list below, each of our top 5 boilers gives you the number of radiators that you can expect to run from each boiler so that you can be sure that it will keep up with your home’s heating demands.

5 Best 30kW combi boiler options:

The best 30kW boilers are listed below:

  1. Worcester Bosch Greenstar 30i 30kW
  2. Worcester Bosch Greenstar 2000 30kW
  3. Ideal Logic C30 30KW
  4. Viessmann Vitodens 050-W 29kW
  5. Baxi 600 30kW (kitchen cupboard size)

Below you can get more information on why the above boilers are the best for customers who are in the market for a 30kW combi boiler.

Is a 30kW combi boiler suitable for your home?

A combi boiler of 30kW would be more than sufficient to power a home generally of 1-4 bedrooms.

Usually, this is a terraced home, flat or apartment, semi-detached or a detached property with a limit of 15 radiators. Although 15 radiators do not sound a lot, most homes in the UK actually have less quantity than 15.

If you live in a home similar to the description above, then a 30kW combi boiler would most certainly be suited for the hot water and heating requirements of your property.

We calculate this by flow rates which is the rate that water flows around your pipes to the output source, such as a hot tap.

If you would like to get a free, fixed online quote, use our online quotation calculator which will show you boilers that will be perfect for your home.

How long does it take to install a 30kW combi boiler?

Getting a Gas Safe engineer to install your new combi boiler will be a job that only takes half a day if it is a straight combi swap. If you have a system boiler (boiler and a tank) currently and want to change to a 30kW combi boiler then this may take 2 days.

A back boiler to 30kW combi boiler will take 1-2 days dependent on home size, but either way, the most any boiler swap will take is 2 days.

These are the best 30kW Combi boilers right now in order of bestness:

#1. Worcester Bosch Greenstar 30i combi boiler 30kW

The Worcester Bosch Greenstar 30i in 30kW size is the top pick due to its consistently high ratings from users and gas engineers alike. Some benefits of the Worcester 30i are below: Best 30kw Combi Boilers Compare Boiler Quotes

  • Warranty length – 10 years
  • Price – a standard combi swap, with a horizontal flue, is £1,999 inc VAT & installation
  • Well known established UK manufacturer
  • Has won Which? Best Buy awards
  • Is suitable for heating up to 16 radiators
  • Has winter frost protection
  • Can be used with smart thermostats, such as the Google Nest 3rd Generation
  • Parts are readily available for any issues in future
  • Has a flow rate of 12.3 litres per minute
  • Boiler size: W 400mm x D 330mm x H 710mm

Compare prices online now for this top 30kW combi boiler.

#2. Worcester Bosch Greenstar 2000 combi boiler 30kW

The Worcester Bosch Greenstar 2000 combi boiler in 30kW size is the second-best pick. This is Worcester’s latest boiler, launched in 2020.

Some benefits of the Worcester Bosch 2000 gas combi boiler are below: Best 30kw Combi Boilers Compare Boiler Quotes

  • Warranty length – 5 to 8 years dependent on the installer. Boiler Central have the longest warranty.
  • Price – a standard combi swap, with a horizontal flue, is £1,899 inc VAT & installation
  • Well known established UK manufacturer
  • Has won Which? Best Buy awards
  • Is suitable for heating up to 15 radiators
  • Also has winter frost protection
  • Can be used with smart thermostats, such as the Google Nest 3rd Generation
  • Getting parts is quick and easy due to the popularity of this boiler
  • Has a nice front LCD display
  • Has a flow rate of 12 litres per minute
  • Boiler size: W 400mm x D 300mm x H 724mm

Compare prices online now for this top 30kW combi boiler.

#3. Ideal Logic C30 30KW

Ideal boilers are average priced combi boilers with Quiet Mark Accreditation, a great pick for the 3rd best 30kW combi boiler. Best 30kw Combi Boilers Compare Boiler Quotes

Suitable for a wide range of homes powering a decent 16 radiators these boilers are great for small and medium-sized homes and a fair size hot water and heating demand alike. Combi boiler prices for the C30 range are also attractive, making this an ideal (pun intended) combi boiler for your home.

  • Warranty length – 8 to 10 years dependent on the installer. Boiler Central have the longest warranty for 10-years.
  • Price – a standard combi swap, with a horizontal flue, is £1,795 inc VAT & installation
  • UK based manufacturer
  • Has won the Quiet Mark Accreditation (it’s super quiet)
  • Perfect for homes that need a quiet boiler
  • Is suitable for heating up to 16 radiators
  • Can be used with smart thermostats, like the Google Nest 3rd Generation
  • Availability of parts is not a problem
  • Has a flow rate of 12.4 litres per minute
  • Boiler size: W 395mm x D 278mm x H 700mm

Ideal has really taken the boiler industry by storm and has some great products and stock to offer in the heating industry. Their warranty length is slightly touching the higher end and users really do love this boiler and you will not go wrong with the 30kW version.

#4. Viessmann Vitodens 050-W 29kW

The Viessmann Vitodens 050-W in 29kW is the number 4 pick. This German manufacturer has really hammered down on the UK market over the last 6 years and is not massively behind Worcester Bosch in terms of the volume of boilers installed in the UK. Best 30kw Combi Boilers Compare Boiler Quotes

  • Warranty length – 10 years usually. Again, Boiler Central have the longest warranties.
  • Price – a standard combi swap, with a horizontal flue, is £1,795 inc VAT & installation
  • The German-based manufacturer usually means reliability!
  • Perfect for a stress-free boiler
  • Is suitable for heating up to 16 radiators
  • Can be used with smart thermostats, such as the Google Nest 3rd Gen
  • Good availability of parts around the UK
  • Has a large flow rate of 14 litres per minute
  • Boiler size: W 400mm x D 350mm x H 707mm

If you are looking for a stress-free boiler that will last years, then the Viessmann 050-W is perfect for any central heating system. It has an impressive flow rate of hot water for this range of gas combi boilers.

#5. Baxi 600 30kW

The Baxi 600 30kW combi boiler is last on the list, but that doesn’t mean it’s actually the worst. It’s clearly made the top 5 combi boilers so it must be a pretty decent boiler right?

The Baxi 600 really is a fantastic gas boiler that is very popular in the UK. This option would be the one to go with if you needed it to fit into a cupboard or to replace a compact Worcester boiler such as the Greenstar 28CDI Compact. Take a look at the benefits of the Baxi 600 30kW below: Best 30kw Combi Boilers Compare Boiler Quotes

  • Warranty length 10-years
  • Price – a standard combi swap, with a horizontal flue, is £2,249 inc VAT & installation
  • UK based manufacturer
  • Well-known brand name
  • Is suitable for up to 18 radiators
  • Can be used with smart thermostats, such as the Google Nest 3rd Gen
  • Getting parts is not a problem
  • Has a large flow rate of 12.2 litres per minute
  • Boiler size: W 390mm x D 285mm x H 700mm

The Baxi 600 is a good choice for anyone looking for a reliable boiler, from a trusted award-winning UK based manufacturer.

To conclude, those are your top 6. If you are looking for another specific brand then let us know. The Vaillant ecoTEC is also a popular 30kW combi, which might be worth investigating as there is a high quantity of these boilers in the UK.

Best combi boiler for off-grid properties

Since our list above showing the best 30kW combi boilers are all powered by natural gas, you may be wondering what are the best boilers in 30kW power for off-grid homes.

If you are off-grid then you will know you need LPG or oil as your fuel source as they are stored for use. It is with great excitement that most of the boilers above are actually compatible with LPG.

It is always best to check first based on your circumstances as some off-grid combi boiler installations are quite complex.

30kW combi boiler prices

The boiler cost of a 30kW combi boiler does vary depending on how much you want to spend.

You can go for entry-level, budget 30kW boilers such as the Vaillant ecoTEC or you can go for our top-rated 30kW combi such as the Worcester Bosch Greenstar 30i and pay £1,999 for a combi swap.

Depending on if you add extras such as a smart thermostat you can add another £199 for a Google Nest 3rd Generation. We have provided prices above for each of our 5 best 30kW combi boilers but either way, you should be around £1,600 to £2,300 model dependent.

If you are changing from a system or regular boiler to a combi then prices will increase as there will be additional work and more labour required to complete the system changeover.

Get a fixed online price now and compare online boiler prices.

Popular FAQ’s

Below are our most popular FAQ’s based on the feedback that we get. Whether this is questions about a heat exchanger or hot water cylinder, or getting grants from the Energy Saving Trust, we cover whatever we get asked, frequently.

How many radiators can a Worcester 30i run?

The number one boiler in our list further up this article gives you the total number of radiators that the Worcester 30i can cope with, which is 16 radiators.

This does not mean that if a home has a low demand for hot water that it can not run 18, for example, but on average we can confidently say that the Worcester Bosch Greenstar 30i 30kW can handle on average, a quantity of 16 radiators.

Who is the best brand to choose for a 30kW combi boiler?

Due to us having 2 Worcester Bosch boilers in the list of best boilers, we would say that the preferred top-rated brand would be Worcester.

They have a solid reputation in the UK since British Gas were hammering the 30i and CDI Compact boilers into every home they possibly could.

Viessmann or Ideal would be the second pick but that would be down to personal preference over the suitability or reliability of those individual boilers.

Can I get a boiler cost for a 30kW combi boiler online?

Yes, absolutely. If you click to use our online boiler comparison tool, it will give you different prices and options based on the information you provide about your home.

You will then get boilers suitable for your home from nationwide boiler installation companies.

Best combi boiler reviews online

If you are looking for trusted reviews on the best combi boiler or best system boiler to purchase then we have an extensive boiler advice section that you can view to help you decide.

You can also contact us if you have any queries on anything boiler related.

Best 30kW combi boiler – Conclusion

So, now you are fully aware of what the best 30-kilowatt boiler is, you can now make your decision based on our extensive experience in the heating industry.

Some readers like our guides to reduce their utility bills and others to see what models they fancy before making a purchase. Either, way, we are here to help so if you need some advice then send us your details and we will get back to you with some answers from our Gas Safe experts.

We are constantly looking at reviews from real users to back up our product rating guides to give you the nest news and up to date deal or website options that you can view for your boiler type requirements.

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