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The GEYSER Sky R0 series features reversible air-source heat pumps with variable speed scroll compressors optimized for natural R290 (propane) refrigerant, which has a GWP of 3 and ODP of 0. The units structure is made of weather-resistant galvanized sheet-iron with sound-absorbing panels. The hermetic scroll compressor, designed for heat pump mode, uses an inverter for speed modulation and includes thermal protection and vibration damping. The source-side heat exchanger, made of copper tubes and aluminum fins, is optimized for heat exchange and noise reduction. The user-side heat exchanger is a braze-welded stainless steel plate with anti-freeze protection. The fans are axial with phase cutting speed adjusters for efficiency and noise control. The refrigerant circuit includes various safety and control components, and the unit features an advanced Bluethink controller for comprehensive management and remote operation. Safety features include multiple sensors and automatic shutdown in case of gas leaks. The unit is factory-tested, securely packaged, and available in other configurations (not included in this EPD) with optional hydraulic modules and noise reduction configurations.