Best Boiler for a Large House and Boilers for 5 bed Homes

If you’re living in a large house, you wouldn’t be the first to question the effectiveness of your boiler—especially in the winter months.

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To efficiently heat every corner of your home, you should choose a boiler and central heating system that can handle high demand and maintain consistent temperatures across multiple rooms without sending your energy bills through the roof.

Keep reading for a total rundown of everything you need to know about the best new boiler for a large house. We’ll give you an overview of the top brands that excel in heating larger spaces and answer your burning questions about efficiency, the types of boilers available, and how much a new boiler will cost you.

Best Boilers for Large Homes in the UK

Our top picks are:

• Worcester 4000 system boiler
• Viessmann 100-W system boiler
• Worcester 8000 system boiler
• Worcester Ri regular boiler

As we delve deeper into each boiler’s specs, you’ll get a better understanding of what model would be the perfect fit for your large home.

Which Type Of Boiler Is Best For A Large House

Large houses need powerful heating, so let’s see which boilers are up to the challenge.

System boilers are the best choice for large houses because they can meet high hot water demands. They include a hot water cylinder for storing water and have a simpler installation compared to regular boilers. There’s no need for additional water tanks in the loft, and they can be adapted to use solar energy.

Conventional boilers are another great option for large homes. They require both hot and cold water cylinders and don’t use mains water supply. These boilers are great for providing hot water to multiple outlets simultaneously and are suitable for homes with weak water pressure.

Combi boilers, on the other hand, are not ideal for large houses. They typically use 9-16 litres of water per minute, and their performance decreases when multiple hot water outlets are used. So, if you’re looking for the “best combi boiler”, you won’t find it here. This type of boiler is a more popular choice for UK homes with 2 bedrooms, 3 bedrooms, or 4 bedrooms with 1 bathroom.

Now that you understand why system and conventional boilers are great options for larger homes, let’s explore some of our favourite models.

Best System Boilers For A Large House

Here are some of the best system boilers for a large house, taking hot water performance and central heating into consideration. These options are ideal for a large 4 or 5-bedroom house with multiple bathrooms and come from trusted brands known for quality.

Worcester 4000 system boiler

Available as both a combi boiler and a system boiler, the Worcester Bosch 4000 comes in a sleek design and uses wireless connectivity.

Released in mid-2021 as an upgrade to Worcester Bosch‘s best-selling boiler at the time, it’s much quieter than its predecessor.

The system boiler uses a hot water storage tank that has hot water readily available, making it a perfect boiler for a large home with multiple bathrooms.

Features

• Energy-efficient: Burns less fuel, resulting in lower carbon emissions.
• Cost-effective: None of your hard-earned cash will be lost on inefficiency as 94% efficiency means only 6% of energy is lost while heating your water.
• Instant hot water: The Quick Tap feature delivers hot water within 20 seconds of turning the tap on and off, reducing water waste and waiting time.
• User-friendly and convenient: It’s easy to program with its LCD display panel and Bosch EasyControl app, so you can control each room in your home with thermostatic radiator valves.
• Quiet: Runs quietly without loud, annoying sounds.
• 10-year guarantee: For extra peace of mind!

Why choose this boiler?

Choose this small-size boiler for your home if you’re looking for something quiet, efficient (94% efficiency rate), and with a sleek and compact design. 

Viessmann 100-W system boiler

The Viessman Vitodens 100-w best-selling gas condensing boiler is available as a regular, combi, and system boiler. Known for its reliability and power, it’s one of the leading boilers on the market.

Features

• Security: If you ever have a problem with your system boiler, you can fix the unit for free with their parts and labour guarantee.
• Convenience: It comes with built-in wifi and a user-friendly LCD touch screen panel.
• Stylish and compact: You can rest assured that this compact boiler will fit comfortably in between cupboards and blend seamlessly into ANY home decor.
• Fast installation: The combined PRV and condensate connection saves valuable time during the simple installation process.
• Reliable: Unlike other competitors that use plastic, Viessman use stainless steel Inox-Radial heat exchangers on their system and combi boilers.
• 12-year boiler warranty: Boiler Central offers a warranty of 12 years on all new Viessman systems and combi boilers, so you can be confident in the longevity of your boiler!

Why choose this boiler?

With hot water cylinders that store ready-to-use water, your family can use multiple showers and baths in your home at the same time, without worrying about running out of hot water.

You can also be confident that your boiler is made from high-quality materials, which ensure durability and resistance to wear and breakage.

Worcester 8000 system boiler

Available as a combi or system boiler, the Worcester Bosch 8000 range is a top-rated choice if you’re looking for reliability and energy efficiency.

The latter option is perfect for larger homes with high hot water demands that require multiple taps to be used simultaneously. With a sleek, modern design, it’s easy on the eye and can easily be installed.

Features

• Easy navigation: The push-button LCD panel is easy to navigate and means you won’t have to stress trying to work a complex control system.
• Smartphone control: You can use the Bosch EasyControl app to adjust the heating in your home if you’re at work or on vacation.
• Eco mode control option: This feature allows you to save money and energy by putting your boiler into eco-mode and reducing carbon emissions.
• 12-year guarantee: Worcester Bosch offers a 12-year guarantee on their 8000 boilers if they are installed by a Worcester Bosch engineer.

Why choose this boiler?

The Worcester 8000 provides central heating for large properties while staying energy-efficient and eco-friendly. Its ease of use and smart-technology compatibility make it even more attractive to those looking for a hassle-free experience.

This boiler is stylish and can be hung on a wall without being an eyesore. Available in two neutral colour options, it’s designed to be seen and resembles a kitchen appliance.

Best Regular Boilers for A Large House

Worcester Ri regular boiler

The Greenstar Ri 27kW & 30kW from Worcester Bosch is a regular boiler with a higher output, making it excellent for a large home.

It’s able to run on a 20% hydrogen blend, so it can run on gas for its lifetime. Check out our article for more information on what hydrogen-ready means if you want to learn more. 

Features

• Easy to use: The simple boiler controls and user-friendly display allow for quick and easy navigation, saving time and extra fuss.
• Solar energy: This boiler can be used with Greenskies solar panels, perfect for homes that run on solar energy.
• 10-year guarantee: You get a 10-year guarantee on your boiler provided that you install it with a Worcester-accredited installer.

Why choose this boiler?

The higher output of this boiler makes it suitable for homes with high central heating and high hot water demands.

What to Consider When Choosing a Boiler for a Large House

Replacing a gas boiler can be overwhelming, especially as there are many different brands and types of boilers available on the market. To choose the right boiler for your spacious home, consider the following key factors:

Energy Efficiency

Look for boilers with high efficiency ratings, such as A-rated models. These units convert more fuel into usable heat, reducing energy waste and lowering your bills. 

Heating Output

Ensure the boiler’s heating output matches your home’s demands. Large houses typically require higher kW ratings to heat multiple rooms effectively. Consider factors like the number of radiators, room sizes, and insulation levels when determining the necessary output for your property.

Hot Water Demand

Assess your household’s hot water needs. System or conventional boilers with separate hot water cylinders are often better suited for large homes with multiple bathrooms, as they can supply hot water to several outlets simultaneously without compromising pressure or temperature.

Control Systems

Opt for boilers with advanced control systems, such as smart thermostats or zoning capabilities. These features allow for more precise temperature management throughout your large home, improving comfort and potentially reducing energy consumption by heating only the areas in use.

Ready to Upgrade Your Large Home’s Heating?

Don’t let an inefficient boiler compromise your comfort or increase your energy bills. 

Boiler Central specialises in finding the perfect heating solution for large homes. Request a free, no-obligation quote today and take the first step towards efficient, reliable heating for your large home. 

FAQs

What’s the best Worcester boiler central heating system?

The best boiler from Worcester is a matter of opinion and depends entirely upon one’s specific needs and preferences.

The Worcester Bosch 4000 is often considered the best boiler from the brand, especially for a larger property that requires a lot of hot water. It boasts many impressive features and an incredible 94% efficiency rate.

If you are someone who is concerned about their carbon footprint or heating bills, the Bosch 4000 is a great boiler for you. It uses Quick Tap technology, is compatible with the Bosch EasyControl app, and has the most impressive features found in one boiler.

However, if you have a smaller home with fewer bathrooms, a combi or regular boiler might be more suitable.

Why are conventional boilers better for large houses?

Conventional boilers are often a better choice for large properties because they have a hot water storage tank. This means that domestic hot water is readily available to go to different locations in the home (including multiple bathrooms and radiators) and the boiler can meet hot water demand when it’s required.

However, a conventional boiler does require a cold water tank, which can take up loft space. Despite this, it’s still a much better option than a combi boiler for a large home.

How big a house will a 30kW boiler heat?

A 30kW boiler could sufficiently heat an average-sized home with three or four bedrooms. However, this power output is best suited for homes with no more than 10 radiators.

If you are looking for the best boiler for a home with more than one bathroom and/or more than 10 radiators, you should consider a 35kW boiler. This higher output ensures sufficient heating and hot water supply for larger properties with greater demands.

Conclusion

When looking for a new boiler for a large house, system boilers are a much better option than combi boilers. Even a large-size combi boiler is not suitable for a large property due to the lack of readily available hot water.

Boilers that require tanks are able to store hot water, ensuring the whole family can use the multiple bathrooms in your home at the same time. The last thing you want is to make those early winter mornings any more stressful than they need to be! If you need a new boiler quickly, you can even get a boiler on finance to help spread the cost.