How to power the JAWO heater?

JAWO heating can be connected by means of a standard adapter of 220V/230V. You need a common safety socket or a termination to the electricity network.

What energy consumption may be expected when using JAWO heaters?

We can not deliver or promise to you exact figures for energy consumption, as they cannot be calculated nor guaranteed. The energy consumption is different from client to client. There are numerous factors that play a role, e. g. the insulation; condition, number and size of the windows; number of doors; possible humidity in walls, insulation of the ceiling, type of room and usage, target and effective temperature; full heating system or auxiliary heating; number of hours per day; region etc. As you can see, it is impossible to predict the exact consumption in advance.

How does the JAWO heating function?

The functioning of the JAWO heating system is quite logical and easy to understand. The heater absorbs electric energy into its Koalit storage core through a heating coil made of stainless steel. This coil is pressed air-tightly in the storage ceramics (compression-moulded with a pressure of 160 tons). Due to the increased resistance, the core gets hot and the whole storage core warms up. The thermal energy build up in the Koalit is very quickly transferred to the aluminium housing. Now, the warm JAWO heater absorbs colder air from the bottom and gives it back as warm air in the upper part of the heating unit. Due to the laws of physics, a slight suction develops, as with any heater that works without a blower. Due to that effect, the air in the room is constantly in motion and there is a continuous exchange of hot and cold air.

After only a relatively short period of time, a temperature balance is produced where a very small difference in temperature of only a few centigrade exists between the ceiling and the floor. Due to the warming up of the aluminium body, heat is produced in a way that feels very comfortable for humans. Forget cold feet with JAWO heaters!

With a night storage heating system, I am on a night electricity tariff and I get by with it much more cheaply than with a JAWO heater.

Indeed, at first glance, the costs are lower when using a night storage heating system and, especially when coupled with a night electricity tariff. Unfortunately, this is a fallacy still popular among many people. Only upon further review may one realize that this is not factually correct. Night storage heating systems need two or three times or even more power than JAWO heaters and in the end are therefore much more expensive. Please do not forget that you need a high-voltage current of 380V for a night storage heating system. Plus, the blower of the night storage heating runs with day current. Nor are these systems maintenance-free, as it is often promised. As time goes by, the heating cartridges loose power similar to a conventional electric bulb. One of the most annoying signs of wear is the rattling of the ball bearings in the blower. Please do not forget the cleaning of airways and the raising of dust, not to mention the enormous size of these appliances. We guarantee you 100% maintenance-free JAWO heating. If you decide to exchange your heating system and to install JAWO heaters, you can almost always use the existing connections of the night storage heating system. They only have to be reduced by your electrician from 380V to 230V on the electrical panel. This way you may change to a 24-hour-electricity tariff or a normal tariff for 230V alternating current.

Is there any danger that JAWO heaters may corrode when installed in humid rooms like bathrooms or toilets?

JAWO heaters do not corrode, not now - not ever. We use exclusively rust-proof raw materials. The complete housing of the heater consists of 100% high-quality aluminium. We deliberately avoid rust-prone materials like steel or sheet steel.

How are JAWO heaters so ultra-light?

The enormous savings in weight is achieved because of the use of aluminium for the heater body. Steel housings have a larger weight of up to 35 per cent more. This difference may be decisive in old buildings that quite often have cavity walls. The same problems occur with drywalls and division walls that cannot carry much weight. Our saving on weight has nothing to do with any free space in the inner part of the heater or any light-weight ceramics. The truth is that our competitors that might claim such things purchase their storage ceramics from the same producers as we do, although they try to convince clients that it is unique and especially worth the money.

Does the aluminium housing cool down faster than a steel housing?

The basic structure of aluminium is different from that of steel sheets. The density of aluminium makes it cool down slightly faster than steel, but at the same time it conducts heat faster and emits it to the surroundings more dynamically. It would be a mistake to follow from this that JAWO heaters cool down faster. Any heater of this kind can keep warmth as long as the storage core allows it or delivers it. Not the sheet steel housing, but the core is the storage mass or medium. In worst case, such housing may become a “damper” for the radiating heat. Because of the conductive aluminium housing, JAWO heaters conduct a maximum of heat to the outside respective to the outer surface.