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PlumbNation Water Heater Guide
A water heater supplies fresh, hot or boiling water instantly on demand, some models will effectively eliminate the need for a kettle. Water heaters can provide a sufficient amount of hot or boiling water suitable for drinking or for the washing of hands meaning on demand hot water 24 hours a day, no storage cylinder required. Point of Use Water Heaters are also an energy saving option where only a small amount of hot water is required as they can be sited practically anywhere.
What is the difference between a boiler and a water heater?
A boiler is used to heat large amounts of water and for heating for the entire household, hot water is used for such applications as central heating systems, showers, hot tap water etc. A water heater supplies instant, stored, hot or boiling water direct from the cold mains water supply, this water is not used for heating purposes such as central heating. A water dispenser issues drinking water, which can be filtered, chilled drinking water or safe boiling hot drinking water.
We at PlumbNation Heating Supplies have sourced our Water Heater collection from the recognised leading manufacturers in the industry to ensure the highest quality and value for money available in the UK. Here you will find Water Heaters from Ariston, Heatrae Sadia, Zip and Santon, all of which are capable of meeting the most demanding and economical requirements of a Hot Water Heater system.
A Water Heater may seem simple enough to not need a guide but there are several forms of water heater available for a variety of requirements and there are also drinking water dispensers for the home or commercial premises. You may find you need instant, boiling hot water on demand and have an empty space above your sink and think to yourself – how about a Water Dispenser? Water Heaters come in all shapes and sizes, ready for a range of possible scenarios so we’ve put together this helpful guide explaining the uses / applications for each water heater type. We’ve also included our best buy water heaters to help you to decide which water heater unit is best for you.
Unvented Water Heater
An Unvented Water Heater system heats water directly from the mains water supply; consequently an expansion tank is not required. Unvented Water Heaters offer a number of benefits compared to conventional Vented Water Heater / Point of Use Water Heater systems including higher pressure / higher flow rates and balanced hot / cold water supplies. Unvented Water Heaters are ideal where hot water is required for multiple outlets, such as kitchens & washrooms. Large capacity Water Heaters are available for more commercial options such as dishwashing, hand washing or low demand canteen use. Unvented Water Heaters are incredibly flexible as they can be sited practically anywhere.
Unvented Water Heaters are available as Under Sink Water Heaters and Over Sink Water Heaters, which literally means they can be positioned over the sink or indeed under sink depending on your hot water requirements.
Vented Water Heater
Vented Water Heaters are generally installed directly over the sink area and are commonly referred to as Point of Use Water Heaters. A Point of Use Water Heater has an open outlet and rely on the opening of a tap or valve on the inlet side to displace the hot water in the heater with the incoming cold water. The open outlet ensures that any excess pressure in the heater is vented. Water expansion is accommodated by allowing the water to drip from the spout.
Point of Use Water Heaters are ideal for use with single sink requirements for example in kitchens, surgeries, workshops and more.
The Domestic Water Dispenser will dispense copious amounts of chilled, filtered drinking water and boiled water too, which will make bottled water a thing of the past and your snail-paced kettle obsolete. Bottled water is incredibly wasteful with plastic bottles littering the environment, and bottled water is a lot more expensive than your mains water supply. A Water Dispenser will provide a constant, fresh, filtered water supply whenever and however you need it.
Hand Dryers are sanitary devices that literally heat water droplets on your hands to dry them (their technology is similar to that of a hair dryer). A Hand Dryer is powered by electricity and can be installed onto the wall of a bathroom for example. A Hand Dryer removes the need for a towel, paper towels or any other wasteful or troublesome means of drying hands, making the domestic or commercial Hand Dryer the perfect ecological and economic hand drying solution.
Water Heater Accessories
When installing Unvented Water Heaters it is important to fully utilise the right Water Heater Accessories. As every Water Heater installation is different, accessory packs are used to ensure that the Water Heater is installed correctly and safely. In some cases, expansion in a cold water main is restricted via a stop valve, check valve or water meter therefore we at PlumbNation Heating Supplies recommend that an accessory pack including an expansion vessel should be fitted. It is also essential that you are aware of your maximum incoming water pressure prior to installation.
There are a variety of accessory packs available, however the exact accessory pack appropriate for you will depend on your Water Heating requirements, therefore PlumbNation Heating Supplies recommend that you seek further expert advice from either your Water Heater installer or Water Heater manufacturer (for example Ariston) before purchasing a Water Heater Accessory Pack.
Water Heater Accessories / Hot Water Dispenser Accessories include: Water Heater Counter Stand, Water Heater Spout, Water Heater Valve, Water Heater Expansion Kit, Water Heater Telescopic Flue, Water Heater Combined Pressure Reducing Valve / Strainer, Water Heater 7 Day Digital Programmer, Water Heater Extra Tap Kit, Water Heater In Line Filter and more.
Electric Water Heater
An Electric Water Heater is relatively simple to install, especially when compared to a Gas Water Heater. It is recommended that a professional installation team carry out the installation. Electric Water Heaters are fast, clean and economical.
Gas Water Heater / LPG Water Heater
A Natrual Gas Water Heater or a LPG Water Heater must be installed by a Gas Safe Registered Engineer. Natural Gas Water Heaters and LPG Water Heaters can be even more economical than Electric Water Heaters but will require more effort with the installation process, meaning they are more costly to begin with but over time offer a greater saving.