Vented Cylinders

Vented Cylinders

Vented cylinders are common in older homes with open vented or heat-only boilers. They are essential in providing hot water for daily household activities such as bathing and cooking. If you’ve heard of the term “gravity-fed system,” you’ll understand how a vented cylinder works. Gravity feeds water to the cylinder from an external water header tank located in the loft space. The stored water is heated and kept at a constant temperature once it enters the cylinder.

To keep the water warm for an extended period of time, these cylinders are typically made of copper and have a thick insulation coating. They are extremely efficient and provide continuous hot water for all of your needs. However, because they rely on gravity, they may be less suitable for multi-story homes, and the water pressure may be less strong than with other systems.

It is important to note that vented cylinders must be serviced on a regular basis to ensure that they operate safely and efficiently. For example, the header tank in the loft space must be inspected and cleaned on a regular basis to prevent debris from accumulating and affecting the water quality. If you’re not sure whether a vented cylinder is right for your home, talk to a heating professional who can recommend the best system for your needs.

Friday’s Plumbing provides a variety of plumbing services to keep your plumbing system in good working order. From minor repairs and installations to complex plumbing projects, our experienced plumbers can handle it all. We only use the best materials and equipment to ensure that every job is done correctly, so you can rest assured that your plumbing system is in good hands with us.


Friday’s Plumbing has a team of Gas Safe registered engineers who can provide expert boiler and gas services. We provide a full range of boiler installation, repair, and maintenance services, as well as gas safety inspections. With our expert knowledge and cutting-edge equipment, you can be confident that your boiler and gas systems are in good hands.


Friday’s Plumbing provides expert heating installation services if you need a new heating system. Whether you need a new boiler, a complete central heating system, or any other type of heating installation, our team of experienced technicians can recommend the best options for your needs and budget. We only use high-quality materials and equipment to ensure that your heating system is properly installed and runs smoothly.


We specialise in the installation, repair, and maintenance of both vented and unvented cylinders at Friday’s Plumbing. Our experienced technicians can recommend the best option for your needs and budget, as well as ensure that your cylinder is properly installed and running efficiently. We also provide repair and maintenance services to ensure that your cylinder is always operating at peak performance.


Friday’s Plumbing provides underfloor heating installation services for a comfortable and efficient heating system. Our skilled technicians can advise you on the best underfloor heating system for your home or business and ensure that it is properly installed and running smoothly. Underfloor heating provides a warm and comfortable environment without the use of bulky radiators or heaters.


Friday's Plumbing provides dependable vented cylinder services for a consistent supply of hot water.

You’ll never run out of hot water again with our dependable vented cylinder services. Our skilled plumbers install and repair all types of vented cylinders, ensuring that your system runs smoothly and efficiently. Whether you require new installation, repair, or maintenance, our team is committed to providing a friendly and professional service that meets your requirements.

Specialists in plumbing & heating installation & maintenance.

Customer satisfaction is our top priority at our Friday’s Plumbing & Heating Services. We are dedicated to providing plumbing services that meet the needs and expectations of our customers in their neighbourhood. We are committed to providing a friendly and professional service every step of the way, whether you require a large-scale installation or a minor repair.

Our expert plumbers are equipped with the knowledge and experience to handle any plumbing project, from routine maintenance to complex installations. We take pride in our work, ensuring that every job is completed to the highest quality and efficiency standards. You can be confident that when you use our plumbing service, your needs will be met with care and attention to detail.

Frequently Asked Questions

A vented hot water cylinder is a common type of water storage tank that is commonly installed in a home’s loft. The cylinder is linked to a cold water storage tank as well as a hot water cylinder, allowing hot water to be supplied to taps and showers throughout the house. Gravity is used to provide hot water, with heated water flowing from the cylinder to the taps or shower and then back into the cylinder.

The cold water comes from a storage tank and is heated by a boiler or immersion heater. Vented hot water cylinders are generally less expensive and easier to install than unvented cylinders, making them a popular choice for many homeowners. However, it is critical that the system is regularly maintained by a qualified plumber to ensure that it operates efficiently and safely.

Gravity is important in providing hot water to taps and showers in a vented cylinder system. When hot water is required, it flows from the cylinder to the outlets via the pipework, propelled by the pressure created by the height difference between the cylinder and the taps.

When the hot water has been used, it is returned to the cylinder and replaced with cold water to be heated again. The cylinder receives cold water from a separate cold water storage tank, which is typically located in the loft. After being heated by a boiler or immersion heater, the cold water is distributed throughout the house. It is important to note that the system’s efficiency is determined by the height and location of the cold water storage tank and cylinder, as well as the diameter and slope of the pipework. Proper installation and routine maintenance can help to ensure that the vented cylinder system runs efficiently and reliably.

Vented hot water cylinders are less expensive and easier to install than unvented cylinders. They also require less maintenance and are less prone to pressure-related problems. Furthermore, they do not require a high water pressure system to function.

A variety of problems can arise in vented hot water cylinders, affecting their performance and reliability. Leaks are a common problem that can occur as a result of corrosion, tank damage, or faulty fittings. Corrosion can also cause cylinder deterioration over time, resulting in decreased efficiency and performance. Inadequate hot water or inconsistent water temperatures can also be caused by problems with the immersion heater or thermostat.

Problems with the cold water storage tank or piping, such as low water pressure or an insufficient supply of cold water, can also have an impact on the system’s performance. If you notice any unusual behaviour with your vented cylinder system, such as changes in water pressure or temperature, unusual noises, or leaks, you should contact a qualified plumber right away to diagnose and resolve the problem. Regular inspections and maintenance can also help identify potential issues before they become major issues, ensuring that your vented cylinder system operates efficiently and reliably.