Design for lower temperatures;Work reliable till -25C.EN14511 standard;High capacity &COP.Heating,cooling and domestic hot water Air Source Heat Pump for lower temperature: 1. Has been tested and designed in accordance with Europeen standard EN14511.2. High efficiency. Able to work reliably and efficiently till minus 25 deg C. 3. Uses Copeland scroll compressor, Alco thermal expansion valve and ...