LG Therma V Air to Water Heat Pump System. Domestic heating system. Dc inverter technology. High COP's to 4.96. Low Running costs, Control options, Solar heating compatibility, MCS approval. LG Therma V is an air to water heat pump system powered central heating system. It is LG Electronics' newest product innovation. It's more efficient and environmentally friendly than a traditional gas powered central heating system, providing a complete domestic heating and hot water solution. How It Works: The LG Therma V air to water heat pump system uses R410a refrigerant to heat the heat exchangers within the indoor wall mounted LG Therma V boiler. This in turn creates high temperature water for a domestic heating and water system. Key Benefits. Environmentally-friendly. 4 times more efficient than a traditional gas boiler. COP values up to 4.5. Far More economical. Embraces inverter technology. Central control options. Timed to operate as and when you want. Emergency control options. Easy checking of system failure. Easy setting feature. Simple to operate.