Which is the Best Boiler For a 4 Bed House in The UK?

In the table above we have provided the number of radiators and the corresponding boiler size needed.

For example, the best boiler for a 5 bedroom house will generally require more than 20kW given that a 5 bedroom house will most likely have more than 2 bathrooms, and if you are wondering what boiler size a 3 bed house needs, around 15 to 20kW in general.

However, it is important to note that this is just a general guide and is subject to change according to your specific needs and circumstances, such as the number of bathrooms and radiators.

The ideal boiler for your 4 bedroom house will depend on the specific requirements of your home and your hot water usage patterns. To make an informed decision, it's essential to understand the distinctions between the three main types of boilers: combi boilers, system boilers, and conventional boilers.

Consulting with a qualified heating engineer can provide you with a personalised assessment and ensure that you select the boiler that perfectly matches your household's heating and hot water needs.

Thankfully, we can help you out with this instead of letting you do the hard work by yourself. Click the button below and we’ll provide you with up to 3 completely free and non-binding quotes from our network of trusted suppliers.

Combi boilers, for instance, are the most popular type of boiler in the UK. Their compact design and high efficiency make them the perfect choice for those attempting to save up precious space in their home.

They can heat water directly from the mains, so there is no need for a separate hot water cylinder. This makes them a good option for homes with no more than 2 bathrooms where space is limited. However, it is important to note that combi boilers may not be able to provide a continuous flow of hot water if there is a high demand for hot water from multiple sources at the same time.

Therefore, system and conventional boilers can be considered to be the most suitable candidates for becoming your next best boiler for a 4 bed house.

System boilers, unlike combi boilers, work jointly with a hot water cylinder. This hot water cylinder allows them to effectively store a supply of hot water, ensuring a consistent flow even during peak demand periods. This makes system boilers an excellent choice for larger homes with multiple bathrooms or a higher demand for hot water.

However, conventional boilers, which can also be referred to as regular boilers, should not be completely ruled out from the equation. If you already have an existing conventional boiler, it is in your best interest to replace your old conventional boiler with a newer version. This will save you time and money by not requiring additional pipework.

Moreover, similarly to system boilers, conventional boilers will also require extra loft space for a hot water cylinder and a cold water storage tank.

Despite system and conventional boilers being widely considered to be the most suitable options for larger households, choosing a combi boiler for a 4 bed house can also be possible, as they can have a sufficiently high output to meet the heating and hot water demands of the house.

A typical 4-bedroom house will require a combi boiler with an output of approximately 20-30 kW. However, the exact output rating required will depend on various factors, such as the size of the house, the number of radiators, and the level of insulation.

To make your life easier, we have put together a compilation of the best combi boilers for your 4 bedroom house. Here are our top picks of some of the top boiler brands, along with their respective combi boiler prices:

Our first pick can reach an outstanding efficiency of up to 98% and is perfectly suitable for a 4 bedroom house given its output ranging from 25 to 32 kW. Its high efficiency will allow you to save on electricity consumption and your bills.

However, on a more negative note, it does rank lower in boiler size in comparison to the other combi boilers on this list and has a lower warranty period.

Our second pick is Worcester Bosh’s Greenstar 8000 combi boiler, which presents a formidable efficiency rating of 94%, output of 30 to 35 kW and the longest warranty out of the three, becoming an excellent option for your 4 bed house.

The downsides to this model include its considerably lower efficiency and higher price than Viessman’s Vitodens 200-W combi boiler, for instance.

Our last choice goes for Baxi’s EcoBlue Advance Combi 33. Its main strength is its long warranty period of up to 10 years, exemplifying the brand’s commitment to customer satisfaction. 

On the other hand, it is generally pricier than its competitors and fares comparatively badly in terms of efficiency, hovering at around 93%.

As you can see, the Viessmann Vitodens 200-W, Worcester Bosch Greenstar 8000, and Baxi EcoBlue Advance are all high-quality combi boilers that offer excellent performance and efficiency. 

Ultimately, the best boiler for you will depend on your individual needs and budget. If you have a large family or use a lot of hot water, then you may want to consider a boiler with a higher flow rate. If you are on a tight budget, then the Viessmann Vitodens 200-W is a good option. And if you want the peace of mind of a long warranty, then the Worcester Bosch Greenstar 8000 is the best choice.

While some combi boilers can offer enough output for larger households, the best boilers for a 4 bedroom house have typically been system boilers. This is because they can provide a higher level of capacity due to their extra hot water cylinder and cold water storage.

System boilers heat water in a cylinder, which means that you will have a constant supply of hot water. Conventional boilers can be considered to be the most traditional type of boiler, and they also use a hot water storage cylinder.

For this reason, we have elaborated a list of our top system boilers for a 4 bedroom house, considering factors such as efficiency, warranty, and output, along with their respective system boiler prices:

The Logic Max system boiler, available in output ratings of 24-30kW, is ideal for heating a 4-bedroom property with multiple bathrooms.

Among its key features is a CH output rating of 24.2kW, which is suitable for medium-sized properties with 10-15 radiators. Boasting 94% efficiency and an ErP A-rating for heat, it is a reliable choice for lowering energy bills. 

Additionally, it comes with a standard 10-year warranty and is priced between £1,849 and £2,349, including VAT, installation cost, and fittings.

The Viessmann Vitodens 200-W is also available as a system boiler in 25 kW and 32 kW models, and similarly to its combi boiler version, it is a highly efficient and versatile boiler that is suitable for homes with 4 bedrooms or more. 

Its 98% efficiency rating is what has positioned it on the list, alongside it being Wi-Fi compatible allowing it to be controlled from anywhere via an app, in addition to its competitive price ranging from £1,400 - £2,000.

The Vaillant ecoTEC plus 624 is a highly efficient system boiler designed to reduce energy costs. With a CH output rating of 24.4kW, it is suitable for homes with approximately 15 radiators. 

Boasting a heating efficiency of 94% and an ErP A-rating for heat, this boiler comes with a standard 5-year warranty, extendable to 7 or 10 years when installed by a Vaillant Advance installer. The typical total price, including VAT, installation cost, and fittings, ranges from £2,027 to £2,527, becoming slightly more expensive than the other models on this list.

Still unsure as to which are the best boilers for a 4 bedroom house? Then we highly recommend consulting with a qualified heating engineer to get an accurate assessment of your home's heating needs.

Luckily, we can help you by offering up to 3 completely free and non-binding quotes from our trusted network of suppliers so you don't have to worry about spending countless hours looking for installers in your area yourself. This way, you can easily compare new boiler prices and choose the one that best suits your needs and budget. Click below to get started.

Lastly, conventional boilers should not be completely disqualified from obtaining the title of best boiler for a 4 bedroom house. They can also be a good choice for those households that already have one installed, as this will save them from the hassle of extra pipework and costs.

Valliant offers a variety of conventional boilers with different capacities and features to meet the needs of a 4-bedroom house. Vaillant boilers are known for their durability and efficiency.

With this being said, Vaillant’s ecoTEC Plus is no different, offering a high efficiency of 94% and an output maximum rating of 35kW, making it perfectly suitable for properties with around 10 radiators.

The Ideal Logic Max Heat H24 is a highly reliable condensing wall-mounted conventional boiler manufactured by Ideal. With a maximum output range of 30 kW, this boiler is suitable for homes with up to 15 radiators. 

The Logic Max Heat H24 is known for its efficiency, boasting an efficiency rating of 94% and ErP A-rating for heat, and a 10-year standard warranty, showing the company’s commitment to customer satisfaction.

The Worcester Bosch Greenstar 8000 conventional boiler is highly efficient, being able to reach an efficiency rating of 94% and is available in a wide range of output sizes ranging from 30 to 50 kW.

As a result, this high efficiency can significantly reduce your heating bills and carbon emissions, becoming a great choice for 4 bed house homeowners who want to save money on their heating bills and reduce their environmental impact.

All in all, when selecting the best boiler for your 4-bedroom house, it's essential to consider factors such as your home's size, the number of bathrooms, and your family's hot water usage. Additionally, it's crucial to consult a professional heating engineer to determine the best type of boiler for your specific needs and home.

To ensure that you're making the right choice for your next boiler type and the cheapest heating systems supplier, you can complete our 30-second form. We will then put you in contact with our network of trusted suppliers that are located close to your place. 

This way, you can compare up to 3 quotes and find the best deal for your needs. You are then free to pick the one you prefer. The service we provide is free of charge and with no obligation so do not hesitate any longer and click below to get started!