Unvented systems
What is an Unvented hot water system?
An unvented hot water system takes it’s cold water supply directly from the incoming water main.so all taps with be equal and mains pressure. It is not gravity fed by a tank in the loft.If you suffer with low pressure at your taps/shower this will solve the problem.
How an Unvented Cylinder Works:
As we have said above, an unvented cylinder is supplied by the incoming main. When you open your tap, the high pressure cold water enters into the unvented hot water tank at the bottom, forcing hot water out of the top outlet and to your taps.
Advantages:
1. Pressure is much higher in all outlets.
2. No loft tanks: this reduces the risk of contamination and legionnaires.
3. No pipes in the loft so no frozen pipe risk.
4. Very high heat recovery rate after use. Typical warm up time 15-20 minutes.
Disadvantages:
1. The hot water pressure will only be as good as your incoming main, however this is fine for most people.
2. No hot water storage.
3. When feeding multiple outlets the pressure can drop a small amount. This also applies to vented systems. On unvented systems it can be due to a small incoming main pipe (15mm for example). To overcome this on an unvented system, you need to install an ‘accumulator’.
All of the cylinders that we fit have a 25 year manufactures guarantee, and our installers are all approved unvented installers. All electrical work is signed off by a competent and qualified electrician.
An unvented hot water system takes it’s cold water supply directly from the incoming water main.so all taps with be equal and mains pressure. It is not gravity fed by a tank in the loft.If you suffer with low pressure at your taps/shower this will solve the problem.
How an Unvented Cylinder Works:
As we have said above, an unvented cylinder is supplied by the incoming main. When you open your tap, the high pressure cold water enters into the unvented hot water tank at the bottom, forcing hot water out of the top outlet and to your taps.
Advantages:
1. Pressure is much higher in all outlets.
2. No loft tanks: this reduces the risk of contamination and legionnaires.
3. No pipes in the loft so no frozen pipe risk.
4. Very high heat recovery rate after use. Typical warm up time 15-20 minutes.
Disadvantages:
1. The hot water pressure will only be as good as your incoming main, however this is fine for most people.
2. No hot water storage.
3. When feeding multiple outlets the pressure can drop a small amount. This also applies to vented systems. On unvented systems it can be due to a small incoming main pipe (15mm for example). To overcome this on an unvented system, you need to install an ‘accumulator’.
All of the cylinders that we fit have a 25 year manufactures guarantee, and our installers are all approved unvented installers. All electrical work is signed off by a competent and qualified electrician.
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