Cylinder installation is another service that LH Gas Ltd offer to our customers. There are two types of cylinders that can be installed into our homes, these are vented and unvented cylinders.
Difference between vented and unvented cylinders
The difference between the two is that an unvented cylinder only has one tank. Instead of having an additional cold water tank, the sealed hot water cylinder is fed directly by the cold water mains. The water is heated by an immersion heater, the pressure and flow of the water on this system can be of higher performance as the water comes from the mains.
A vented cylinder contains a vent pipe which allows it to be subject to atmospheric pressure. The mains water is fed to and stored in the cold water tank. The appliances within your home that require hot water are fed indirectly via the cold water tank to the water cylinder where it is heated using a heat exchanger. Sometimes vented systems can have low-pressure water and require pumps to be installed, to assure a strong flow of water for both domestic hot water and heating.