What Are Conventional Boilers & Why Are They Still In Use?
Conventional heat-only boilers, also known as regular or open vent boilers, are at the heart of many UK homes, especially those with multiple bathrooms or higher hot water demand.
A conventional boiler system, also known as a regular or traditional boiler, is a type of central heating system commonly found in older houses in the UK.
In 2023, the selection of these boilers in the UK has evolved to offer greater efficiency, advanced features, and a range of sizes to cater to different household needs.
How does a conventional boiler work & how are they different?
It is different from modern combi or system boilers in several key aspects. Conventional boilers require a cold water storage tank (usually in the loft) and a hot water cylinder, often found in an airing cupboard.
This system is more complex and takes up more space compared to combi boilers that combine both functions into one unit.
The cold water tank draws water from the mains and feeds it into the boiler. The boiler heats the water, and it’s then stored in the hot water cylinder until needed. When you turn on a hot water tap or the heating, the system draws water from this cylinder.
Key Features of Modern Conventional Boilers in 2023
Range of Models and Sizes
Leading brands like Worcester Bosch, Viessmann, and Alpha offer conventional boilers in various sizes and power outputs, making them suitable for a wide range of homes, from smaller properties to larger, multi-bathroom houses.
The Worcester Bosch Greenstar 8000 Life, for example, is available in outputs ranging from 30kW to 50kW, while the Viessmann Vitodens range offers boilers in sizes including 11kW, 19kW, and 25kW.
Conventional boiler Prices
The prices of conventional boilers can vary based on several factors. The cost typically ranges from around £840 for more budget-friendly models like the Alpha E-TEC Regular to around £1,700 for higher-end options such as the Viessmann Vitodens 200-W.
These prices usually reflect the boiler unit itself and might not include installation expenses. You can find out further about the price of boilers here.
The installation costs can fluctuate based on the difficulty of the installation, regional differences in labor charges, and whether it involves a replacement or a new setup. Additionally, factors like the brand, model, size, and efficiency ratings contribute to the overall pricing of conventional boilers in the UK.
Energy Efficiency
Modern conventional boilers boast high energy efficiency ratings, often achieving ‘A’ ratings and efficiencies of around 92%. The Vaillant ecoTEC plus, for instance, can operate at just 16% of its power when full heating power is not needed, resulting in significant fuel cost savings and a reduced carbon footprint. The Viessmann Vitodens 200-W achieves up to 98% fuel efficiency, making it one of the most efficient on the market.
Innovative Features
Many of the latest models come with advanced features like WiFi connectivity and smart controls, allowing for remote temperature control and monitoring. The Vitodens 200-W, for example, has an integrated WiFi interface and can be controlled via the ViCare app.
Hydrogen-Ready Options
With the UK’s plan to introduce a 20% hydrogen blend into the gas supply, many new boilers are hydrogen-ready. This means they can operate on a blend of hydrogen and natural gas, future-proofing them against upcoming changes in fuel supply.
Cost Considerations:
The cost of conventional boilers varies depending on the model and size. For instance, prices can range from around £840 for an Alpha E-TEC Regular to £1,695 for a Viessmann Vitodens 200-W. Installation costs are additional and can vary based on the complexity of the installation and regional factors.
Installation Process
Installing a conventional boiler typically involves setting up a water tank and hot water cylinder, in addition to the boiler itself. The installation can take anywhere from 1 to 3 days, depending on the complexity and whether it’s a like-for-like replacement or a switch to a different boiler type.
Customer Service and Warranties
Brands like Worcester Bosch are known for their excellent customer service and aftercare, with warranties ranging from 5 to 12 years depending on the model. This aspect is crucial for peace of mind and ensuring long-term reliability and support.
Environmental Considerations
With the UK’s goal to achieve net zero carbon emissions by 2050, the focus on eco-friendly heating solutions is paramount.
Heat pumps and potential hydrogen boilers are being considered as alternatives to traditional gas boilers, aligning with future environmental goals.
When selecting a conventional boiler, it’s essential to consider factors such as property size, hot water demand, energy efficiency, and the reputation of the manufacturer for quality and customer service.
Reliable brands like Worcester Bosch, Viessmann, Vaillant, and Alpha offer a range of options to suit various needs and preferences
Conclusion
Conventional boilers are a longstanding type of heating system found in many older homes. They function by heating water and distributing it through pipes for heating and hot water needs. Despite advancements in boiler technology, they’re still in use due to their reliability, especially in homes already equipped with these systems, and some prefer their separate hot water tanks for simultaneous supply without pressure loss.
While newer, more efficient systems exist, many households stick with conventional boilers for their familiarity, cost considerations, and ability to meet high hot water demands. However, modern and eco-friendly alternatives such as the combi boiler are becoming increasingly more popular for their energy efficiency and space-saving designs, prompting some homeowners to transition away from conventional systems.
FAQ’S
Are conventional boilers suitable for all types of homes?
Conventional boilers are more ideal for larger properties or those with multiple bathrooms, radiators and taps to be powered at once. Due to their ability to supply hot water to several outlets at once. However, they might not be the most space-efficient option for smaller homes.
What are the main differences between conventional boilers and modern systems like combi boilers?
Unlike combi boilers that combine both heating and hot water functions into one unit, conventional boilers require a separate hot water cylinder and a cold water storage tank, which can take up more space.
How long does it typically take to install a conventional boiler?
Installation durations can vary based on the complexity of the setup and whether it’s a replacement or a new installation. On average, it can take anywhere from one to three days for a complete installation.
What are the cost considerations when opting for a conventional boiler?
The cost of a conventional boiler varies depending on the model and size. Additionally, installation costs are an important factor and can increase based on the complexity of the installation and regional pricing differences.
Do conventional boilers offer energy-efficient options?
Yes, modern conventional boilers come with high energy efficiency ratings, often achieving ‘A’ ratings and offering significant fuel cost savings, contributing to reduced carbon footprints.They are not the most energy efficient option on the market, but still achieve these high ratings.
