Hot water plays an essential role in the bathroom. A bathroom without hot water access is hardly reasonable. It is probably only an effective means in small guest toilets or storage rooms. When it comes to providing water in the bathroom or the kitchen, you essentially have two options: a centralized or decentralized solution.
With a central hot water supply, all tap points in the home are heated by central heating. In the bathroom, only the radiators are required, otherwise no other built-in components. The hot water comes preheated directly from the tap on the tap. The decentralized hot water supply, in turn, heats the required service water on the spot.
Accordingly, with a decentralized water supply, no lines from the central heating to the bathroom are necessary, only a conventional drinking water connection. The decentralized hot water supply provides hot water in reserve and is operated with electricity in traditional systems.
By far, the best solution for the hot water supply in the bathroom is a classic central heating system (oil, gas, wood, or heat pump). The standard design heats the heating water in a so-called buffer tank and the hot water in a hot water tank. You can turn on the heating or a tap in the bathroom and have immediate access to the previously stored heat.
If you have little space, you can use a combination storage tank instead of two storage tanks for heating and drinking water. The bottom line is that this solution is slightly more expensive. Suppose it is not possible to estimate in advance how often the hot water storage tank is emptied. In that case, the hygienic storage tank is the better alternative to the first two solutions. Here, the drinking water always remains in motion, and possible germ formation is practically impossible.
Theoretically, you can use central heating without a hot water tank – but this will affect comfort and operating costs.
A drinking or freshwater station does not need its storage tank and works practically like an instantaneous water heater. However, the most crucial difference is that the heat in a drinking water station is transferred from the heating water via a heat exchanger, which makes the system very inexpensive during operation.
A typical area of application for drinking water stations is, for example, apartment buildings, where it can be pretty questionable to store the drinking water in large hot water tanks. If the water stands here for too long, germs can form in rare cases, making the drinking water inedible.
If the rest of the house is heated with electric night storage heaters, for example, or if there is only a comparatively small gas boiler for the radiators, decentralized boilers were often used in the past. These mini storage tanks always heat a small amount of water directly at the point of use. They are, in most cases, operated with electricity.
However, heating with electricity is costly in everyday life (around 29 cents per kWh), so electric boilers do not belong in a modern bathroom. Exceptions only exist where the effort and costs for laying new lines would be disproportionate to the later benefit (e.g., a guest bathroom renovation).
The water heater is very similar in structure and used to a boiler, although it does not store any water. It is practically impossible to provide hot water in the bathroom more cheaply and efficiently than with an electric instantaneous water heater – it only becomes expensive when used daily.
In addition to the high operating costs for electric versions, instantaneous water heaters generally have a significant disadvantage that some readers will probably know: When showering, the water initially stays cold, and even a little later, it never gets hot if the instantaneous water heater is too small or too old is.
Therefore, if you want to install or maintain a bathroom water heating system throughout Kuala Lumpur and Selangor. Call 24/7: (+60) 18 292 7331