Bathroom water heater

Category Heating

Subcategory Bathroom water heaters

Manufacturer/author Junkers

Place of manufacture/creation Germany

Size Height: 56 cm
Width: 16 cm
Length: 34.5 cm
Weight: 3.9 kg

Material brass, copper, steel, plastic

Museum/Storage location Gasworks Museum in Paczków

Date of admission to the museum 1992

Rights to the exhibit Gasworks Museum in Paczków

Rights to digital images Gasworks Museum in Paczków


Exhibit description

The need to maintain proper hygiene was not limited to bathing in warm water. In the past, manufacturers of bathroom gas heaters also produced a wide range of devices in which water heated by gas flames was used to brew tea or sterilise medical instruments, among other things. This Junkers gas heater is a small apparatus of the so-called tank type, in which a certain amount of water was first heated to a high temperature and then maintained at 65°C. This solution worked best where water was used in small quantities at a time (hairdresser, hospital, doctor's office). Temperature control was carried out by a special vessel – a flat round container similar to an oil cup, which was filled with a suitable liquid (ether or alcohol). The mentioned vessel was installed on the back of the device. Under the influence of the rising temperature, the liquid in the vessel would begin to boil, and the resulting steam exerted pressure on the diaphragm that closed the gas valve. After using up some of the hot water and letting in cold water, the control element cooled down and the vapor (e.g. alcohol) pressure decreased, allowing the gas flame to increase, which reheated the water to the desired temperature.

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