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What is a vented hot water cylinder?

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After recently covering how hot water cylinders work and what they are, we thought it would be useful to expand on this topic by focusing on vented hot water cylinders and how they differ from unvented systems.

If you’re not sure whether to choose a vented or unvented cylinder, this guide is for you. We’ll take you through the main differences between vented and unvented hot water systems and the pros and cons of each so you can make an informed decision.

What is the difference between a vented and unvented cylinder?

In a nutshell, the main difference between a vented and unvented hot water cylinder is that a vented system is connected to a cold water tank in the loft by a vent pipe and the unvented system is hooked up to the cold-water mains.

Let’s take a look at each type of system in more detail, along with its unique advantages and disadvantages.

Vented cylinders

Vented hot water cylinders are hot water storage tanks that are used in traditional plumbing systems. If you have a vented hot water cylinder, it will be connected to a cold water tank in the loft by a vent pipe. The water flows through the vent pipe down to the hot water cylinder where it is heated.

This type of system relies on gravity to deliver water to the cylinder. The water pressure you get with a vented cylinder depends on how high the cold water storage tank is. The higher the tank, the greater the pressure will be. That’s why you’ll usually find the tank in the loft.

Below, we explore the key benefits and drawbacks of vented hot water cylinders.

Advantages of vented cylinders

Disadvantages of vented cylinders

Unvented cylinders

Unlike vented systems, unvented hot water cylinders are connected directly to the mains water supply. The cold water is delivered from the cold water mains supply and is heated by the cylinder. They don’t require a separate cold water storage tank.

Unvented cylinders are newer than vented systems but they are growing in popularity.

Below are some of the main pros and cons of unvented cylinders.

Advantages of unvented hot water cylinders

Disadvantages of unvented hot water cylinders

Looking for further information or advice on hot water cylinders? Contact our friendly and knowledgeable team today.

 

Jamie Brown

From my early working life as a labourer, then becoming a builder and a property developer, I have been buying and using building materials for over 25 years. I set about to start a builders merchant which can offer high-quality products and significant savings along with speedy delivery to keep your sites moving. Still having a foot in the construction industry on my own property, I always make sure the products we sell are up to our high standards which is important for us to keep a great image for the company and superior reputation to supply quality!

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