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Last updated: 4th April, 2024


Best Boiler Brands for Terraced House

Best Boiler Brands for Terraced House

Key takeaways

  • Understanding boiler types and brands is crucial for making the best choice for your terraced house.
  • Boiler size and efficiency are essential factors to consider for optimal performance and cost savings.
  • Ongoing maintenance, warranty coverage, and eco-friendly options can significantly influence the long-term benefits of your chosen boiler.

Searching for the best boiler brand for terraced housing? Our guide compares the top-rated boilers from reputable sources like Which?, House Energy, and Blue and Green Tomorrow to help you find the perfect boiler that fits your budget and heating needs

Finding the right boiler for your terraced home can significantly impact your comfort and energy savings. Boilers are at the heart of your heating system, and with various brands offering multiple types of boilers, it's crucial to understand which options are best suited for your property. 

In this article, we will explore the key players in the boiler industry, taking into account factors like size, efficiency, and cost to help you make an informed decision when selecting a boiler for your terraced house.

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Terraced housing often presents unique challenges due to limited installation space and interconnected construction. As a result, it's essential to choose a high-performance boiler specifically tailored to the needs of terraced homes. A suitable boiler should not only heat your home comfortably but should do so efficiently, reducing your energy consumption and carbon footprint.

Understanding Boiler Brands and Types

When selecting a boiler for terraced housing, it's essential to understand the various types and brands available. This section will briefly discuss system boilers, heat only boilers, and combi boilers, as well as some of the best brands for each type.


Combis or combination boilers, combine all components and aspects of a heating system (central heating and hot water production) into one succinct and powerful unit.

Their economic size, quick flow rates and dual functionality means combis are extremely efficient and effective when heating a multitude of property sizes, being best suited for small to medium sized homes with 1-2 bathrooms.


System boilers perform best in homes with a high hot water demand, specifically either larger properties with a higher number of residents or properties with two or more bathrooms. 

System boilers store hot water in a separate cylinder which provides constant flow access but requires additional (minimal) storage space.

System boilers can service multiple flow outlets at one time, meaning no one in a larger home would be standing around waiting for a shower.

Heat Only

A heat only boiler provides the heat for a home's central heating system and hot water cylinder. A heat only boiler is suited to servicing larger properties with multiple bathrooms/radiators or a business premises with a high water demand. 

Heat only boilers do require sufficient installation space within a property, as they use two storage tanks (feed & expansion) as well as the aforementioned hot water cylinder. 

Although a combi is generally considered more space saving, a modern heat only boiler is still compact and can supply more bathrooms with hot running water than a combi can.

Exploring Top Boiler Brands for Terraced Housing

Worcester Bosch

Worcester Bosch is a well-known boiler brand, with a reputation for producing efficient and reliable boilers. In terraced housing, their Greenstar and CDi ranges are particularly suitable due to their compact size and energy efficiency. These boilers come with extended warranty periods, assuring homeowners of their quality and durability. Moreover, Worcester Bosch has a dedicated after-sales support team to provide assistance when needed.



Vaillant is another premium brand, offering a range of boilers ideal for terraced homes. Their ecoTEC range includes high efficiency models, suitable for saving energy and reducing bills. Vaillant boilers are designed for easy installation with their flexible flue systems, making them an appealing choice for homeowners. Additionally, their Quiet Mark accreditation highlights the brand's commitment to producing boilers with low noise levels - an essential consideration for terraced houses.



Viessmann, a German boiler manufacturer, is renowned for combining reliability with innovative technology. Their boilers are built using stainless steel heat exchangers, providing excellent heat transfer and longevity. Viessmann's Vitodens range features compact models, perfect for the limited space often found in terraced homes. These boilers also feature advanced control systems, enabling easy usage and optimised efficiency.


Baxi boilers have been popular for decades, thanks to their combination of efficiency, reliability, and affordability. The Duo-tec and EcoBlue series offer excellent choices for terraced homes. Baxi boasts a large network of engineers, ensuring rapid response times and reliable customer support. Their commitment to sustainability is also noteworthy, as Baxi is dedicated to reducing carbon emissions and promoting energy efficiency.


Potterton is a British brand with a long history of producing dependable boilers. Their Promax and Titanium ranges are perfect for terraced houses given their compact size, efficiency, and ease of installation. These boilers are equipped with user-friendly controls, further adding to their appeal. Potterton boilers are backed by comprehensive warranties and a solid after sales service network.


Alpha boilers are known for their affordability without compromising on quality. The E-Tec and Intec series cater specifically to the needs of terraced housing. These boilers are energy-efficient, easy to maintain, and come with a seven-year warranty. Alpha provides a nationwide support network to ensure peace of mind for homeowners.


Vokera is a reliable boiler brand offering competitively priced models ideal for terraced homes. Their Vision and Easi-Heat ranges provide compact, energy-efficient options with easy-to-use controls. Vokera boilers are supported by solid warranties and a dedicated technical support team, promising a hassle-free experience for homeowners.

Glow Worm

Glow Worm is an established British boiler brand with a long-standing reputation for producing cost-effective yet reliable boilers. Their Energy and Ultimate series offer compact, high-efficiency options for terraced houses. Glow Worm provides homeowners with extended warranties, enhancing customer confidence in their products.


Ideal is a well-regarded boiler manufacturer, producing reliable and energy-efficient solutions. For terraced homes, the Logic+ and Vogue ranges are particularly suitable, with compact designs and great efficiency ratings. These boilers come with comprehensive warranties, and Ideal's customer support network ensures rapid response times and professional assistance.


Importance of Boiler Size and Efficiency

Selecting the right boiler size and considering its efficiency are crucial factors for terraced housing. Homeowners must ensure they choose the ideal boiler to meet their heating and hot water requirements while keeping energy bills low. 

Though modern boilers are generally more efficient than older models, there's a significant difference in performance and fuel consumption even among contemporary boilers.

The size of a boiler is measured by its output, which directly relates to the home's heating and hot water needs. A boiler with an insufficient output will fail to provide enough heat and hot water, whereas an oversized boiler is wasteful and expensive to run. 

For terraced houses, one way to determine the appropriate boiler size is by counting the number of radiators. For example, a 24-27kw boiler might be suitable for up to 10 radiators.

Ensuring boiler efficiency involves taking note of efficiency ratings. These ratings play a vital role in helping homeowners decide which boiler will give them the most output. Higher efficiency ratings indicate that a higher percentage of fuel consumed by the boiler is converted into heat.

 This means a more efficient boiler not only reduces energy bills but also has a lower impact on the environment. In turn, this can result in savings of up to 40% on heating costs.

Some of the top boiler brands for efficiency include Worcester Bosch. These brands offer boilers equipped with condensing technology, which substantially improves their ability to convert energy into heat. 

When shopping for a boiler, it is essential to seek out models with high efficiency ratings and advanced features that promote long-term performance and cost savings.

In summary, the importance of boiler size and efficiency cannot be overstated when choosing the best boiler brand for terraced housing. 

By carefully considering these factors, homeowners can ensure they select a boiler that efficiently meets their needs and contributes to energy bill savings.

Green and Renewable Options

Terraced housing can benefit significantly from eco-friendly boiler options. These boilers not only reduce carbon emissions but can save homeowners money on energy bills. Several boiler brands offer green alternatives whilst still delivering excellent performance.

Another green alternative to gas boilers is air source heat pumps (ASHPs). These devices extract heat from outside air, using it to warm a property. They are known to be highly energy-efficient and have lower carbon emissions than traditional boilers. With reduced fuel costs, ASHPs can be a cost-effective choice for terraced homes.

In terms of renewable energy sources, solar power is also becoming increasingly popular in combination with eco-friendly boilers. A solar thermal system can provide hot water, reducing reliance on fossil fuels, thus lowering a household's carbon footprint. 


A Guide on Your Hot Water Needs

Identifying your hot water needs is essential when selecting the best boiler brand for terraced housing. It's crucial to consider factors such as the number of occupants, frequency of use, and desired efficiency in meeting hot water demands.

For terraced houses, a system boiler is often the ideal choice. This type of boiler works in tandem with a hot water cylinder, providing steady hot water supply and facilitating quick response to fluctuations in demand. 

A system boiler's efficiency ensures that you consistently have access to hot water, even in times of high consumption.

When assessing your home's hot water demand, it's important to take into account the number of residents and their usage patterns. A small family may require less hot water than a multi-generational household with frequent visitors. Additionally, peak times such as early mornings and evenings should also be considered, as they tend to see the highest demand for hot water.

Hot water cylinders play a vital role in a system boiler setup, as they store and distribute hot water according to demand. The capacity of the cylinder should match the hot water requirements of your home. 

A well-insulated cylinder is particularly important, as it contributes to reducing heat loss and maintaining a high level of energy efficiency.

In summary, it's essential to carefully consider your hot water needs before choosing a boiler brand for your terraced home. Examine your family's hot water consumption patterns, select an appropriate system boiler and hot water cylinder, and ensure that your chosen setup provides a reliable and efficient solution to your hot water demands. 

By doing so, you'll ensure a comfortable and energy-efficient home environment for years to come.

Maintenance, Spare Parts, and Labour Costs

When considering the best boiler brands for terraced housing, one important aspect to bear in mind is the maintenance, spare parts, and labour costs associated with these appliances. Regular upkeep and timely repairs are vital to ensuring a boiler's efficient performance and longevity.

Spare parts can vary significantly in price, depending on the brand and type of boiler being used. Some boiler manufacturers are known for having more affordable components, while others may charge a premium for their spare parts. It is crucial to factor in the cost of these components, as well as their availability when making a decision about the best boiler brand for your home.

The maintenance of a boiler is also a crucial consideration, and this includes not only routine servicing but also addressing any issues that may arise during its lifespan. A typical boiler cover package could cost between £200 to £300 a year, including an annual service and cover for repair costs. However, it is important to be mindful of introductory offers that may seem cheaper initially, but could have increased costs in the subsequent years.

Labour costs can also fluctuate depending on the location and expertise of the engineer undertaking the boiler repair or service. Repair costs for a boiler tend to fall within the £100 to £500 range, with the average cost sitting around £300, which includes parts. Certain boiler cover plans, such as the Boiler Insurance by Scottish Power, offer monthly payments as low as £3.50, but it comes with an excess of £99 per claim. Some plans may also offer a replacement boiler worth up to £750 if needed.

In summary, it is essential to consider not only the upfront cost of a boiler but also the ongoing expenses related to maintenance, spare parts, and labour when selecting the best brand for terraced housing. Choosing a reliable and cost-effective boiler brand will ensure efficient performance, long-term support, and reduced expenses in the long run.

Energy Bills and Cost Efficiency

When selecting a boiler for a terraced house, energy efficiency is a key consideration. High-efficiency boilers can significantly reduce energy bills by utilising fuel more effectively. Energy-efficient boilers commonly have ratings of around 90%, while electric heating systems are even more efficient, heating evenly and quickly. 

The average annual cost for a medium-sized house with an electric heating system is around £987.42.

A wide variety of boilers are available in the market, offering diverse price ranges that cater to various budgets. To maximise cost savings, it is essential to select an appropriate boiler size. 

An oversized boiler would not only result in higher upfront costs but also increased energy consumption, leading to higher energy bills. On the other hand, an undersized boiler may struggle to provide sufficient heat, reducing comfort levels and potentially necessitating the use of additional heaters.

To make an informed decision, consider the following factors:

  • Energy efficiency rating: The higher the rating, the more efficiently the boiler uses fuel and the lower the associated energy bills. Look for boilers that scored well in reliability and engineer surveys.

  • Fuel type: The energy source also plays a role in efficiency. Natural gas systems usually boast efficiencies around 90% but are not as eco-friendly as renewable heating solutions such as heat pumps. LPG and traditional electric heating systems are also available as alternatives.

  • Boiler technology: Modern boilers are equipped with advanced features, such as condensing technology, which help recover heat that would typically be lost through flue gases. This recovery substantially enhances energy efficiency.

It is crucial to weigh up the pros and cons of various boiler brands and models, taking into account factors such as efficiency, energy savings potential, and the price range. Investing in a high-performing boiler not only reduces energy bills but also minimises the property's carbon footprint, contributing to a greener future.

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Frequently Asked Questions

What is the most reliable brand of boiler?

It's important to find a reliable boiler brand when choosing one for your terraced house. Viessmann is often regarded as a highly reliable brand, known for its well-engineered boilers and commitment to quality. However, it's also worthwhile to consider other options like Baxi and Navien, which are similarly acclaimed for their reliability and performance.

What is the best boiler brand UK?

There are several top boiler brands in the UK, including Viessmann, Navien, and Baxi. The "best" brand may vary depending on individual preferences, budget, and specific needs. When choosing the right brand for your terraced house, it's essential to consider factors such as energy efficiency, installation costs, and customer service.

What boilers do plumbers recommend?

Many plumbers typically recommend well-established brands like Viessmann, Navien, or Baxi, due to their proven performance, reliability, and built-in quality. It's essential to communicate your specific needs and preferences to your plumber, as they can offer tailored advice and recommendations based on your unique requirements.

Which is the best boiler for my house?

The ideal boiler for your terraced house will depend on factors such as available space, heating and hot water demands, and energy efficiency goals. Smaller properties with limited storage space may benefit from combi boilers, while larger homes may require system or regular boilers. Researching different options and discussing your needs with a professional can help you make an informed decision.

Which boilers are most energy efficient?

Energy efficiency is a crucial factor in choosing a boiler. Condensing boilers are notably energy efficient, as they utilise waste heat that would otherwise be lost, making them more effective than non-condensing boilers. Brands such as Viessmann, Navien, and Baxi all produce energy-efficient boilers that can help reduce your home's carbon footprint and save on energy bills.

What is the longest lasting boiler?

The longevity of a boiler depends on various factors, including proper installation, maintenance, and overall quality. Generally, well-built boilers from reputable brands like Viessmann, Navien, and Baxi can last 10-15 years, and even longer with regular servicing and care. To ensure the longest lifespan for your boiler, it's essential to invest in a quality brand and adhere to recommended maintenance schedules.

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Article by
Stephen Day | Co-founder
Gas Safe registered and FGAS certified engineer with over 20 years experience in the heating and cooling industry.