Best 30kW Boilers in 2024: Combi, System & Regular

With so many boilers available, selecting one can be overwhelming. If you have a big house with high hot water demands, a 30kW combi boiler could be the perfect solution. 

This article sheds some light on the 30kW boiler prices and explores available types as well as factors to consider when choosing one for your home. 

Yet while each manufacturer promises only the best boilers of exceptional quality, having one installed by an engineer you don't trust is missing a crucial piece in the puzzle. 

Save yourself hours of time and effort spent researching and comparing local installers on your own. Instead, opt for an effortless experience with our free and non-binding service. 

By filling out our 30-second form, you'll receive up to 3 quotes from qualified local boiler installers near you. Just click the button below to get started.

30kW boiler models are specifically designed to heat larger homes (around 250-350 square metres) or those with high hot water usage needs. Here's a breakdown of their key features:

Choosing the right type of a 30kW boiler depends on your specific needs, such as the size of your home, hot water usage requirements, and available space for additional units like a hot water cylinder. 

How many radiators can a 30kW boiler run depends on multiple factors, including the boiler type you choose. Let's have a look at the most efficient boilers in the 30kW boiler category.

Combi boilers are compact boiler units that don’t require extra components such as a hot water cylinder. The main 30kW combi boiler advantage is that it provides hot water on demand making it the most popular type of boiler in the UK.

Combi boilers generally come in smaller output sizes. However, there are some more powerful combi boilers with 30kW capacities available. A 30kW combi boiler is usually recommended for homes with up to 15 radiators.

Let's look at some of the best combi boilers to help make your decision-making easier.

This Baxi 30kW combi boiler features a robust brass hydraulics block, known for its durability and reliability. The built-in stand-off frame simplifies installation and saves time during the process.

You can take control of your home comfort from anywhere with the Baxi uSense smart room thermostat. This allows you to adjust your heating and hot water settings remotely using a convenient app.

This Baxi 30kW combi boiler model comes with a 10-year parts and labour warranty. This warranty is even more comprehensive when the boiler is installed with an Adey MagnaClean Micro2 filter, which helps protect your boiler from harmful debris and extends its lifespan.

This Worcester 30kW combi boiler boasts a stellar 94% ErP efficiency rating, translating to lower energy bills and a reduced environmental impact. The "Quick Tap" water-saving function further enhances its eco-friendly credentials. 

With a 30kW output, it can comfortably heat small to medium-sized homes with around 15 radiators and 1-2 bathrooms. Additionally, its hot water flow rate of 12.3 litres per minute ensures you can run multiple showers or taps simultaneously without compromising performance, unlike most combi boilers.

Moreover, this Worcester Bosch 30kW combi boiler uses the Fernox Protector F1 which helps prevent the formation of limescale, ensuring efficient heat transfer and optimal performance of your heating system.

Made in the UK, this Ideal 30kW combi boiler features an intelligent preheat function that learns your domestic hot water usage patterns, ensuring hot water is readily available when you need it. It is fully approved for a 20% hydrogen blend, making it adaptable to potential future fuel sources and regulations. 

The Ideal Logic 30kW combi boiler comes equipped with a filling loop and a built-in service timer, streamlining the installation process. Additionally, improved connections further enhance ease of fitting.

This Ideal 30kW combi boiler model is a perfect option for those prioritising space efficiency as it fits comfortably in smaller cupboards. With this in mind, the Ideal 30kW combi boiler price makes it a budget-friendly option for those who value both space-saving design and powerful performance.

However, going through all 30kW combi boiler prices and available options can be difficult without an expert opinion. That’s why we always recommend getting advice from a professional installer so that you can find the best 30kW combi boiler for your home.

But how do you find a reliable and qualified installer? Usually, searching for one can march on for days and still leave you with no contacts at your fingertips.

Thankfully, GreenMatch can quickly connect you with local qualified installers in no time. Complete our short form and we’ll send you up to 3 quotes completely free of charge which you can objectively compare to secure the best deal. Click below to begin!

A regular boiler, also commonly known as a conventional or heat-only boiler, is the UK’s traditional boiler heating system. Features of a heat-only boiler include having a water tank in the attic and a hot water cylinder in an airing cupboard.

There are various pros and cons of a regular boiler, as it will meet high hot water demands but at the cost of taking up a lot of space in your home. In general it is only recommended that you install a regular boiler if you're replacing an existing one.

If you feel like a 30kW heat-only boiler is the right choice for your home, then you can check out a selection of the top conventional boilers below:

We have already mentioned the 30kW combi version of this boiler above. Due to its popularity, it’s also available as a 30kW heat-only boiler. 

This 30kW heat-only boiler from Baxi comes with the Adey Magnaclean Micro2 magnetic system filter. This compact filter effectively removes debris and impurities from your heating system, protecting your boiler and enhancing its durability.

It doesn't require a pump overrun or permanent live connection, and its reduced weight makes it easier to handle. Additionally, the choice of top or rear flue options provides flexibility during installation.

In case your home is too big for the Vaillant 30kW combi boiler, its 30kW heat-only boiler is your way to go. 

The ecoFIT pure boasts exceptional efficiency ratings and low emissions, translating to reduced energy bills and a minimised environmental footprint. Also, its Quiet Mark-approved operation (55dBa) ensures minimal noise disruption, making it ideal for any living space.

High-quality components, particularly the robust aluminium heat exchanger, guarantee a durable and long-lasting heating system for this Vaillant 30kW gas boiler.

The large, bright LED display on the ecoFIT pure ensures clear visibility, even in dimly lit areas like basements or utility rooms. Furthermore, the display features recognisable Vaillant fault codes, simplifying troubleshooting and repairs.

This is another boiler from Ideal’s Logic flagship range. This 30kW gas boiler comes with an Ideal system filter pre-installed. This filter helps capture debris and impurities in your heating system, protecting your boiler and maximising its efficiency.

The rear flue option provides additional flexibility during installation, allowing for easier adaptation to your existing setup.

If the cost of a new boiler is your main concern, make sure you consult an experienced boiler engineer first. They can help you choose among the best cheap boilers and find an affordable option without compromising the quality. 

Yet, finding a trustworthy installer requires some legwork. You can ask your friends or neighbours for some contacts or check online reviews to see what previous customers have said about local boiler engineers. But this takes up hours of your valuable free time, which you don't always have!

Why not speed things up with GreenMatch? Filling out our form takes only 30 seconds and brings up to 3 quotes from professional boiler installers in your area. Our service is free of charge and non-binding. Click the button below to get started!

System boilers are generally best suited for larger homes with a higher heating and hot water demand. A 30kW system boiler best fits homes with approximately 20 radiators.

Below, we’ve mentioned some of the best 30kW system boiler options to give you an idea of what’s available.

Apart from offering an efficient Worcester 30kW combi boiler, this brand has developed an award-winning 30kW system boiler model.

It features an aluminium silicon heat exchanger, and with its Keyless Filling link, you can easily re-pressurise your system without a separate key. 

This 30kW system boiler from Worcester Bosch is capable of running on a 20% hydrogen blend and is compatible with solar thermal energy for enhanced efficiency.

This 30kW system boiler ensures efficient and quieter combustion. Detecting any lift in the boiler flame adjusts the gas and air mixture for optimal performance, minimising noise and maximising efficiency.

Vaillant is working towards a greener future, as they are currently trying to create a 100% hydrogen-ready boiler to help reduce greenhouse gases. 

This particular 30kW system boiler model is compatible with a blend of up to 20% hydrogen gas, making it adaptable to potential future fuel sources and regulations.

The Ideal Max Logic System² boasts a compact and lightweight design, allowing for discreet installation in a standard kitchen cupboard. Its fully modulating operation technology allows the boiler to adjust its power output to precisely meet your heating demands, ensuring efficient energy use and minimising energy waste.

The built-in frost protection safeguards your boiler from potential damage during cold spells. This additional layer of security ensures reliable operation year-round.

To find a perfect 30kW solution, it’s important to compare quotes from several experienced installers. To do this, you normally can call local installers one by one and repeatedly explain what you’re looking for. But this can take up a lot of your valuable time. Luckily, GreenMatch has a much faster way to do this.

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Biomass boilers can be a great option for those who live in rural areas and want a potentially low-carbon heating option. 

Domestic biomass boilers are 30-50% cheaper to run than their fossil fuel counterparts and more than 4 times cheaper than electric boilers.

The Froling P4 prioritises ease of use and exceptional performance. It offers automatic features like ignition, cleaning, and user-friendly touch-screen controls.

Additionally, the P4 boasts a three-part heat exchanger for high efficiency and low emissions, making it an eco-friendly choice. 

For maximised versatility, this biomass 30kW boiler offers an integrated storage tank and solar thermal control, and its ability to cascade with up to four boilers makes it suitable for larger buildings

The Grant Spira 36kW takes efficiency to the next level with condensing technology that utilises exhaust heat. The universal hopper offers flexibility in installation, and rapid ignition ensures quick start-ups. 

This boiler comes with an automatic cleaning system that minimises maintenance needs, while still maintaining exceptional efficiency even in non-condensing mode.

This 30kW boiler boasts extended maintenance intervals, requiring service only once every two years. The patented ash-sliding grate ensures efficient ash removal and increased operational safety. The low-wear ignition element provides silent, reliable operation without requiring maintenance. 

High efficiency and low emissions are achieved through the innovative stainless steel burner, surpassing even the strictest regulations. The BioWIN2 further reduces maintenance tasks with its large ash box that only requires emptying 1 to 2 times a year.

This is why it’s always important to seek advice from a professional heating engineer to help you figure out which type of biomass boiler best fits your needs and circumstances. It can be stressful finding trustworthy installers on your own though, so avoid the endless web scrolling and let us help instead! 

At GreenMatch, we can provide you with free quotes from up to 3 local boiler installers so that you can objectively compare and choose the best deals. Simply click the button below to get started.

By researching the specific boiler types, you can determine if a 30kW boiler is the right size for your home's heating and hot water needs. It's crucial to consider several factors before making a final decision. Here's a breakdown of the key points to remember:

Consulting with a qualified heating engineer can also be helpful to receive personalised advice based on your specific situation. Yet searching for an installer you can trust can cost you hours of precious free time that you don't have.

Fortunately, GreenMatch can do the groundwork for you. Fill out our 30-second form, and we’ll provide you with up to 3 free quotes to compare from certified installers near you. It’s free and doesn’t bind you to place any orders. Simply click the button below to request your quotes.