What are the benefits of installing an unvented cylinder?

30 Answers

Answered by Total Plumbing

21st May 2019

Total Plumbing answered the question "What are the benefits of installing an unvented cylinder?"

Unvented cylinders free up valuable space in your property in regards to the fact you lose your Cold water storage tank and your small Feed and expansion tank, usually housed in your loft. The idea being they provide high pressure balanced hot and cold water to all outlets compared to an old open vented system. This is because unvented cylinders are directly supplied by the mains, but of course this depends on the strength of the mains in the first place. Id recommend an unvented cylinder in a property with 2 or more bathrooms for the simple reason no one wants to have there shower pressure reduced midway through as someone downstairs has decided to wash up The unvented system is completely sealed too, so the water is not at risk of contamination and you don’t have to worry about the water tank freezing throughout winter. A great option for many properties

Answered by Youle & son's mechanical services ltd

21st May 2019

Youle & son's mechanical services ltd answered the question "What are the benefits of installing an unvented cylinder?"

If you have a large property with plenty of room with lots of hot water usage. Or bad pressure. an unvented cylinder would be efficient and pretty cheap to run. Things you would need to look into is storage capacity and locations. You can also link them to your solar panels as a sort of pre-heat. Alot of avenues to explore. I generally opt for these for larger properties with 2 bathrooms or more.

Answered by Eco Heating Services

21st May 2019

Eco Heating Services answered the question "What are the benefits of installing an unvented cylinder?"

Unvented cylinders free up valuable space in your property and tend to provide stronger water pressure than an open vented system. This is because unvented cylinders are directly supplied by the mains, but of course this depends on the strength of the mains in the first place. Unvented hot water cylinders are also perfect space-saving options for the modern home. An unvented hot water cylinder doesn’t require a feeder tank in the loft and frees up valuable space in your property. Unlike vented cylinders, the unvented cylinder doesn’t rely on gravity to function, so it can be installed almost anywhere in your home! This makes it easier to store in a place more suitable for you. Other advantages of installing an unvented system include reduced noise in the system. This is due to the fact that there is no cold water filling up the water storage cistern. The unvented system is completely sealed too, so the water is not at risk of contamination and you don’t have to worry about the water tank freezing throughout winter

Answered by Taylor plumbing and heating services ltd

20th May 2019

Taylor plumbing and heating services ltd answered the question "What are the benefits of installing an unvented cylinder?"

Unvented cylinders can provide greater performance to showers and large properties, in domestic homes some considerations must always be taken the strength of the mains. Ie pressure and flow rate, also what showers are to be used or are currently in place. Another solution in large properties or flats is to use a potable water break tank supported with a booster set . To achieve constant flow to all the outlets. If you would like further advice contact me

Answered by Legion Plumbing & Heating

11th May 2019

Legion Plumbing & Heating answered the question "What are the benefits of installing an unvented cylinder?"

Unvented cylinders are generally installed in properties with multiple bath/shower rooms. They provide a large amount of stored hot water with excellent pressure and flow rates (as long as the incoming water main is sufficient). When piped correctly they can provide balanced water pressure (equal pressure between hot and cold) which allows mixer showers to work at their optimum and generally provides a better plumbing system all round. They also contain an electric immersion heater which is handy as a back up should your gas boiler break down. As they are fed directly from the incoming water main there is no need for a cold water storage tank in your attic which also frees up space.

Answered by Greenwich Plumbing Company

8th May 2019

Greenwich Plumbing Company answered the question "What are the benefits of installing an unvented cylinder?"

Unvented cylinders can provide hot water to 2 or more bathrooms simultaneously if you have the right incoming cold mains pressure and flow rate where most combi boilers would struggle to supply even two bathrooms . There is no need for a cold water storage tank to supply an unvented cylinder so you gain this loft space if you had a vented cylinder ( gravity system) before. They are easy to install and maintain .

Answered by Apex Property Services

27th April 2019

Apex Property Services answered the question "What are the benefits of installing an unvented cylinder?"

Having an unvented cylinder frees up space in the loft from the cold water storage cistern. Also gives a much better equal pressure than the vented cylinders. They come in many different sizes, sized for its certain needs. They can be heated via immersion heaters (direct) or via a boiler, solar (indirect)

Answered by D.H plumbing

26th April 2019

D.H plumbing answered the question "What are the benefits of installing an unvented cylinder?"

Save space get your loft back, better flow rates at all outlets plus a balanced pressure on hot and cold. Easy to maintain/ service. 1 2 or 3 bathrooms no problem it just needs the right cylinder and the right installer to do all the pre checks. They do still take up space in the airing cupboard but you get your loft space back.

Answered by Brompton Plumbing & Heating

26th April 2019

Brompton Plumbing & Heating answered the question "What are the benefits of installing an unvented cylinder?"

Mains pressure hot water/no storage tanks in loft (assuming CH is pressured and not gravity)/more efficient hot water. Thermal Stores can also be a good alternative to Gravity systems and can avoid some of the installation issues related to unvented. As mentioned elsewhere Unvented system can be very dangerous if installed incorrectly and not maintained so must be installed by a qualified engineer.

Answered by A Armstrong Plumbing & Heating

26th April 2019

A Armstrong Plumbing & Heating answered the question "What are the benefits of installing an unvented cylinder?"

Unvented hot water cylinders have many benefits, the main one is high flow rates at taps and showers without the need for any pumps. This means no noisy shower pump, and no costly replacement if the pump breaks down. Also, because the system runs off the mains supply you no longer need a cold water storage tank in the loft. Unvented cylinders are highly efficient due to their excellent insulation, meaning quicker heat recovery times.

Answered by T Brown Heating Solutions Ltd

23rd April 2019

T Brown Heating Solutions Ltd answered the question "What are the benefits of installing an unvented cylinder?"

There is many benefits of installing a unvented Hot water cylinder. The main attraction is effectively getting a higher pressure hot water system with out the need of noisy pumps. You also do away with the cold water storage cistern in the loft. Other benefits include low heat loss due the excellent insulation, quick recovery times due to the new design of heating coil inside the cylinder and most come with a long warranty against defects.

Answered by Plumbsafe Plumbing and Heating Ltd

17th April 2019

Plumbsafe Plumbing and Heating Ltd answered the question "What are the benefits of installing an unvented cylinder?"

There are a number of benefits from a unvented cylinder the main ones are as follows ....... Fast bath fills and also powerful showers, if there is the likely hood of two baths or two showers going at once it will keep up with the demand as long as its been sized up properly. If you suffer from poor flow rates a combi wont be a suitable option, unvented cylinders are basically a store of pressurized water so you will have better flow rates throughout your property. If you have a big property with 3 or more bathrooms or more than 1 bath this system is a must due to your high hot water demands As there is a store of hot water. These cylinders are very economical and will keep your water warm for a very long time with out the demand form the boiler. For instance we have one fitted in a flat we own as a rental, once the hot water is up to temp you can leave it for days and it will only drop a few degrees if the hot water has not been used. But please remember you have to use a fully qualified installer although these cylinders have a number of safety devices and installed properly they are very good. Put in incorrectly and your basically sitting on a bomb that will blow half your house apart. They need to be registered with building control and safety inspection every 12 months is a must to ensure correct operation.

Answered by iGas Heating Ltd

31st March 2019

iGas Heating Ltd answered the question "What are the benefits of installing an unvented cylinder?"

Unvented Cylinders are the best system for houses that require hot water for more than one bathroom. However you can’t just install a cylinder and hope it’ll work. It is best to enlist the help of a G3 Qualified plumber to test your incoming mains flow rate and pressure to ensure that you have sufficient incoming mains to cope with the demand of more than one bathroom. Unvented cylinders are excellent for hot water performance and as long as your incoming cold water supply is sufficient you can have multiple outlets running simultaneously without a noticeable drop in performance . It is worth noting that when installed incorrectly an unvented cylinder is as dangerous as gas, as can cause explosions if installed incorrectly

Answered by A.D. Energy

29th March 2019

A.D. Energy answered the question "What are the benefits of installing an unvented cylinder?"

Unvented cylinders are very popular and almost nearly installed in all large enough new build homes. They store a lot of hot water and can produce high flow rates with good pressure of installed correctly. They also need regular servicing and maintenance to ensure they operate correctly.

Answered by S & L Plumbers

29th March 2019

S & L Plumbers answered the question "What are the benefits of installing an unvented cylinder?"

Unvented hot water cylinders have soared in popularity and can now be found in most homes across the UK. Connected directly to your mains water system, unvented cylinders ensure copious amounts of stored hot water is available on demand and they operate at mains pressure to offer much higher flow rates. This allows you to enjoy improved shower and bath performance all year round!

Answered by Franklin Plumbing & Heating

26th March 2019

Franklin Plumbing & Heating answered the question "What are the benefits of installing an unvented cylinder?"

There are many benefits of installing an unvented cylinder, mains pressure hot water for powerful showers and fast bath fill, cylinder can be located anywhere, (close to bathrooms is better), no more pipes in the loft to worry about freezing, lower risk of legionnella due to lack of tanks in the loft and much reduced risk of contamination, more efficient due to better insulation and faster heat up times. Can provide hot water to multiple bathrooms where a combi boiler can't, subject to adequate incoming mains pressure & flow. Long warranties on cylinders.

Answered by BPH - Blakemore Plumbing And Heating

25th March 2019

BPH - Blakemore Plumbing And Heating answered the question "What are the benefits of installing an unvented cylinder?"

Unvented systems do have certain advantages, not least because they are an efficient way of storing and distributing hot water throughout your home at mains pressure. Other advantages include: Fast filling baths, Hot water at mains pressure, No restrictions on where in a property the system is installed, No need for cold water storage, Utilises existing pipework, Drinking water at all taps, If your property has more than one bathroom or shower then unvented systems are ideal to meet demand for simultaneous hot water from more than one outlet, with flow rates reaching more than 22 litres per minute.

Answered by Raistrick gas

24th March 2019

Raistrick gas answered the question "What are the benefits of installing an unvented cylinder?"

The benefits of a unvented hot water system out weight a gravity system greatly the main one is getting hot water at the same pressure as your cold mains, saving space in the loft as the expansion tanks are no longer job, installation of an unvented system is a specialist job so make sure you use a local qualified installer

Answered by Boilers 4 Britain ltd

24th March 2019

Boilers 4 Britain ltd answered the question "What are the benefits of installing an unvented cylinder?"

Unvented cylinders free up valuable space in your property and tend to provide stronger water pressure than an open vented system. ... Other advantages of installing an unvented system include reduced noise in the system. This is due to the fact that there is no cold water filling up the water storage cistern.

Answered by Gas-Tec

19th March 2019

Gas-Tec answered the question "What are the benefits of installing an unvented cylinder?"

Unvented cylinders have a many advantages, primarily they deliver hot water at near to mains pressure giving good shower performance even if 2 or more taps are used. Secondly there are no loft tanks required freeing up space and reducing the risk of leak. Finally as they are seal from the air there is are reduction in the risk of legionella and other harmful bacteria build up. There are strict regulations in place regard the installation of this type of cylinder which must be followed to ensure correct and safe performance, these are cover by building regulations G3 and the person installing the unit must have the correct qualification.

Answered by J W Plumbing and Building services LTD

9th March 2019

J W Plumbing and Building services LTD answered the question "What are the benefits of installing an unvented cylinder?"

Unvented cylinders have there main advantage when a property has multiple bathrooms requiring hot water at the same time. They vary in size dependant on the requirements of the property. The mains incoming water via a pressure reducing valve will give updated pressure from a gravity fed cylinder. We can give better advice when the requirements of each individual property / customer of this is the best system you require

Answered by LP Plumbing & Heating Ltd

5th March 2019

LP Plumbing & Heating Ltd answered the question "What are the benefits of installing an unvented cylinder?"

Unvented cylinders are great if you have multiple bathrooms and a large heating system. There are minimum requirements needed to make sure the system works correctly however or it really is a pointless exercise (there are ways of improving your pressure in some cases) . An indirect unvented cylinder needs 3 bar incoming water mains pressure and around 20 litres per minute flow rate, this will ensure the hot and cold outlets are delivered at the same pressure regardless of how many outlets are bring used. Without this minimum requirement being met other outlets can suffer when others are being used ie reduced flow rate. Another thing to consider is the space they take up, all that aside if your property meets the requirements and you have multiple bathrooms then an unvented cylinder is definitely a good option. Ensure that your installer is G3 qualified as installed incorrectly in can be a dangerous system and that they have a plan in place for the design of your system. One last note, as its a pressurised system if you are converting from a gravity system some taps or showers can be affected with the increased change in pressure for example they may start to drip, if this happens they will need changing.

Answered by Fortune And Co

1st March 2019

Fortune And Co answered the question "What are the benefits of installing an unvented cylinder?"

The advantages of the unvented system are that it supplies hot water at mains pressure and because it does not require a cold water storage tank it can be sited in any location within the house. However it can be trickier and more expensive to install and doesn't always work well with some power showers and mixers.

Answered by MJS Plumbing, Heating and Maintenance

1st March 2019

MJS Plumbing, Heating and Maintenance answered the question "What are the benefits of installing an unvented cylinder?"

Unvented cylinders are becoming the norm as they provide you with hot water at mains pressure. You will get a better shower without the need of a seperate pump, baths will fill quicker. Both your hot and cold will have balanced pressures, giving you access to high quality fittings. The tank in your loft will no longer be needed therefore less risk of frozn pipes in your loft space.

Answered by Precision Plumbing & Heating

1st March 2019

Precision Plumbing & Heating answered the question "What are the benefits of installing an unvented cylinder?"

Unvented cylinders are increasingly the chosen option in homes and larger buildings. There are a lot of good reasons to go with an unvented cylinder. They use water directly from the mains, so need for a tank in the attic. This isn’t just good for saving space – it can also take away the possibility of freezing issues in winter. Because they use mains pressure, they can provide a much more even flow for baths and showers. Once installed, unvented cylinders can give you real savings in terms of energy efficiency

Answered by Alltime Plumbing & Heating

28th February 2019

Alltime Plumbing & Heating answered the question "What are the benefits of installing an unvented cylinder?"

the benefits are that you are getting mains pressure hot water(around 3 bar) with a thermostatic shower this makes a massive difference . they also need to be fitted by competent installers because if fitted incorrectly can have devastating consequences…………………………………………………………………..

Answered by Careys Plumbing & Gas Ltd

18th February 2019

Careys Plumbing & Gas Ltd answered the question "What are the benefits of installing an unvented cylinder?"

Unvented cylinders are great for larger properties with multiple bathrooms, en-suite’s as large amounts of hot water can be drawn off at any one time. There is also the advantage of installing a secondary hot water circuit for instant hot water at all outlets. The high flow rate makes them ideal for thermostatic showers with large drencher shower heads.

Answered by PipeDream Plumbing

11th February 2019

PipeDream Plumbing answered the question "What are the benefits of installing an unvented cylinder?"

The main advantage to an unvented install is it gives the hot and cold pressure equal at every outlet in your property with little fluctuation, unvented systems are perfect for multi bathroom properties. Unvented systems doesn't require a header tank in the loft like a conventional hot water system, which frees up valuable space in your home. They can also be installed almost anywhere in your property, this makes it easier to store in a place more convenient to you. There is also the advantage of reduced noise and unvented systems are sealed so there is not a risk of contamination.

Answered by JSM Plumbing and Heating services

10th February 2019

JSM Plumbing and Heating services answered the question "What are the benefits of installing an unvented cylinder?"

Unvented cylinders are great bits of kit, they free up space as they can be installed almost anywhere due to them being mains feed and and won’t suffer from poor flow rates or low pressure as long as the incoming main is suitable, I also find customers tell me they like the reduction in noise compared to filling up storage tanks while using the hot water and a more efficient system.

Answered by Surrey Plumbing Solutions Ltd

9th February 2019

Surrey Plumbing Solutions Ltd answered the question "What are the benefits of installing an unvented cylinder?"

A real advantage of an unvented cylinder is that it enables the hot and cold to be of equal pressure, which is beneficial for any thing that uses mixed water, i.e. Shower valves and mixer taps. Also it removes the need to have tanks and stored water in lofts etc. There are no restraints on where cylinders are located as they come off the water main and don't require gravity to assist.

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