For heating, the chamber load is exposed to defined temperatures at atmospheric pressure within a climate chamber. Thermal energy is transferred by convection and radiation to the chamber load. In the case of cooling, on the other hand, the heat is extracted from the chamber load and released to the environment outside the climate chamber via the cooling system (Peltier-cooling in the Memmert constant climate chamber HPP, compressor-cooling in the Memmert climate chamber ICHeco and in the Memmert climate test chamber CTC).

The heating system of a Memmert climate chamber can be programmed according to respective requirements with regard to energy efficiency, heating-up times, quiet running or low vibration. The energy-efficient, low-vibration and quiet running climate chamber HPP is suitable for climate tests with test temperatures close to the ambient temperature due to the Peltier technology which is used for both heating and cooling. The climate chamber ICHeco cools again with conventional compressor technology and convinces with excellent values for uniformity of temperature and humidity. The temperature test chamber TTC /climatic test chamber CTC also cools via a compressor and is primarily designed for tests in an alternating climate.