In 1987 HKT took over the production and further on development of brand Goeldner-Compressors. HKT continues now with the 80 years history of company Goeldner. Nowadays condensing units, parallel units, chiller, tailor made units for special operation and heat pumps for refrigeration, air-conditioning and heating applications are produced with the always advanced own compressors. The compressors distinguish themselves by smooth operation, absolute reliability and efficiency. Innovation is the passion of HKT. Proved by the trend setting Goeldner-Motion range. The first refrigeration compressors with built-on frequency inverter launched in year 1999. Further on HKT has in its portfolio the compressor range for natural refrigerants as there are ammonia (R717), R723, propane (R290) and diverse hydrocarbons.