
Do I need an annual service on my Unvented hot water cylinder?
We get a notification that a service is due on our car and the first thing we think is ‘more expense’, but when it comes to an unvented hot water cylinder an annual service is vital to ensure your safety.
How often should I service my water cylinder?
First, understand that all water cylinders benefit from regular service, whether they’re vented or unvented. However, unvented cylinders require annual service, whereas vented cylinders do not. If you check your homeowner’s insurance, chances are good that the insurer has a clause that states you must have the cylinder serviced every year.
Do I need to service my unvented gas cylinder?
However, unvented cylinders require annual service, whereas vented cylinders do not. If you check your homeowner’s insurance, chances are good that the insurer has a clause that states you must have the cylinder serviced every year. If you look at the warranty information for your cylinder from the manufacturer, you’ll find a similar notice.
Why service an unvented cylinder with a G3?
A G3-qualified technician (the only ones allowed to service unvented cylinders) will keep an eye out for things like leaks, corrosion, and more. The technician will also test and check various components to ensure that your unvented cylinder is operating correctly.

Do you need to service an unvented cylinder?
The simple answer here is “yes”. You should have your unvented water cylinder inspected and serviced every year. The reason for this is that unvented cylinders, while offering better performance and reliability than vented cylinders, do have inherent risks. They are pressurised metal cylinders.
How do you service an unvented hot water cylinder?
2:3718:57How To Service An Unvented Hot Water Cylinder Roy Fugler - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd we're going to refer to them as we're going through today so the first thing we need to do is toMoreAnd we're going to refer to them as we're going through today so the first thing we need to do is to isolate the water coming in and then what we're going to do is open up both the hot and the cold.
Does a hot water cylinder need to be serviced?
You should be aware that the cylinder installed in your property is a pressurised container and will require regular maintenance just like a gas boiler. An annual check is vital to ensure your safety and must be carried out by a qualified engineer.
How long does a unvented cylinder last?
An unvented hot water cylinder generally lasts for 30 plus years when fitted to the highest standard. If your cylinder is beginning to leak water, then it is time to replace it. At any point, the leaking water can get worse and cause substantial damage to your property.
What is involved in a unvented cylinder service?
The following tasks will be completed during the annual package of your unvented water heater and hot water heater maintenance, repair and service: Expansion relief valve testing. Temperature and pressure relief valve testing. Combination valve/pressure reduction valve stripping and line strainer cleaning.
What involved in servicing unvented cylinder?
WHAT'S DONE ON AN UNVENTED HOT WATER CYLINDER ANNUAL SERVICE?Check the pressure on the heating system expansion vessel (1-1.5 Bar)Test the operation of the pressure relief valve.Top up the system if required and check the operation of the filling loop.Check the filling loop for leaks and rectify where required.More items...
Do Megaflo cylinders need servicing?
It is strongly recommended that you get your Megaflo serviced every 12 months in order to keep it in peak working order and avoid these issues.
What pressure should my unvented system be?
As unvented cylinders work from the power of the mains water supply, the mains pressure and flow rate must be adequate. Supply pressure should be around 2 bars and able to supply the required flow rates.
What is difference between vented and unvented cylinders?
An unvented hot water cylinder differs in that it provides mains pressure hot water directly from the cold mains as opposed to tank pressure water provided with a vented cylinder. The cold water is directly pulled from the main water supply and is then heated by the selected heat source relevant to the cylinder type.
How many Litres of hot water does a shower use?
According to the Hot Water Association the average bath uses 100 litres of hot water at 40oC, while the average shower uses 18 litres of hot water per minute.
How long does it take to heat an unvented cylinder?
Six hours of heating should be sufficient in most instances, and it is best to heat the water from midnight until 6:00 AM.
Can I use a regular boiler with an unvented cylinder?
You can use either a vented or unvented hot water cylinder with a system boiler. 2. If you use a vented cylinder, you will still need the cold water storage cistern, normally in the loft.
How do you service a Megaflo?
Servicing:Partially drain cylinder.Recharge air gap.Replenish water supplies.Check condition of safety valves.Check test electrical connections.Check operation of zone valve (CL models only)Check resistance of immersion heaters (DD models only)Check continuity and operation of thermostats (DD models only)
What is difference between vented and unvented cylinders?
An unvented hot water cylinder differs in that it provides mains pressure hot water directly from the cold mains as opposed to tank pressure water provided with a vented cylinder. The cold water is directly pulled from the main water supply and is then heated by the selected heat source relevant to the cylinder type.
Why do you need an annual check?
An annual check is vital to ensure your safety and must be carried out by a qualified engineer. It validates your manufacturer’s warranty and guarantees the cylinder operates efficiently in compliance with industry guidance and Building Regulations (Part G: Sanitation, hot water safety and water efficiency).
Do you have to tell your service engineer about your water heater?
It will be helpful to let your service engineer or service provider know in advance of the appointment your make and model of water heater if this is known.”
Do unvented hot water cylinders need maintenance?
Many people are unaware that an unvented hot water cylinder requires an annual inspection of the key safety devices fitted to the system. You should be aware that the cylinder installed in your property is a pressurised container and will require regular maintenance just like a gas boiler.
What valve is used for an indirect unvented cylinder?
All indirect unvented cylinders require that the flow from the boiler to the cylinder is fitted with a Motorised Isolating Valve.
How does an unvented hot water cylinder work?
Let’s look at the unvented hot water cylinder and explain how it works. Unvented hot water cylinders store water supplied directly from the incoming mains water supply. They are heated using either electrical heating elements (immersion heaters) or from a boiler. This provides high-pressure hot water supplies capable of feeding all ...
What should be checked when a mains supply pipe is incoming?
The incoming mains supply pipe sizes and flow rates, as well as pressures, should always be checked.
Where is the temperature relief valve on a cylinder?
A Temperature and Pressure Relief Valve, fitted near the top of the cylinder, is required.
Do I need my unvented hot water serviced?
Do I need My Unvented Hot Water Serviced? Yes is The Answer. SAFETY
Do mains pumps need pressure?
In order for them to work properly, they require both adequate mains pressure and flow rate.
What is EasyFlow annual service?
The EasyFlow annual service for unvented water heaters includes testing safety valves, recharging pressure vessels, cleaning the pressure reduction valve, checking electrical connections and providing a service certificate. We also offer a Maintenance Plan which includes a free annual service, call outs to investigate faults, and parts and labour for repairs in return for a low monthly fee paid for by direct debit.
What is maintenance plan for unvented water heater?
The Maintenance Plans for unvented water heaters include the cost of an annual service as well as call-outs, parts and labour. Offering great savings, a priority service and no hidden or unexpected costs.
What happens if you don't service your water heater?
Attention: If an unvented water heater has not had a regular annual service there is a possibility that the rubber seals in the safety valves will have hardened. If the seals have hardened, they will not sit back correctly in the valve and will pass water. In this instance water will be visible through the tun-dish in the discharge pipe and the valve in question will need to be replaced. We will provide a quote for the additional work to supply and fit a replacement valve.
How safe are unvented water heaters?
Unvented water heaters are safe to use if installed and maintained correctly though an annual service. They incorporate three levels of safety. Thermostats that prevent the water being heated above 60 – 65°, high level cut-outs that operate when water reaches 80 – 85° because the thermostat has failed and a temperature relief valve, which operates if both of the other safety features fail and the water reaches 90 – 95°. In addition unvented water systems also incorporate a pressure relief valve which operates at 6 – 7 bar.
Why do you need to maintain a water heater?
Annual maintenance will help to keep the water heater safe and in line with the requirements of the G3 building regulations relating to hot water systems. Details of what is included in the annual service are shown below.
What is annual maintenance for EasyFlow?
Annual maintenance from EasyFlow will help ensure that you never need to worry about being inconvenienced and without hot water, or subject to safety concerns.
What is the importance of a log of services?
In addition, without a record of services, repairs and maintenance, there is no record of the parts that have been replaced, the problems that have been solved, or troubleshooting that has taken place. This information is vital to ensuring speedy repairs and accurate maintenance moving forward.
