Unlike other heat pump systems which use a group of environmentally harmful gases called Hydrofluorocarbons (HFCs and HCFCs), SANYO's solution is to use R744 as its refrigerant, which is carbon dioxide (CO2), an entirely natural and non-toxic gas that is sealed within the system.
| Characteristics of Natural Refrigerant R744 (CO2) | ||||
|---|---|---|---|---|
ODP* |
GWP** |
|||
| R744 CO2 Natural Refrigerant | 0 |
1 |
||
| R410A HFC | 0 |
1900 |
||
| R407C HFC | 0 |
1600 |
||
| * Ozone Depletion Potential | ||||
| ** Global Warming Potential | ||||
Performs even in temperatures as low as -25¼C
An outdoor unit with HFC refrigirant normally operates in temperatures of down to around-10¼C. Below this temperature range, they mostly rely on a built-in electric heater to take over. Since electric heaters have a low COP of around 1, the result is a significant drop in overall system efficiency. The CO2 ECO Heating System heat pump with its CO2 refrigerant can operate even in temperatures as low as -25¼C
Heat pump outlet maximum hot water temperature
CO2 refrigerant also allows higher working temperatures compared to HFC heat pumps. Whereas other manufacturers' heat pumps can provide warm water to 45-50¼C they require an electric booster heater to increase the temperature to meet hot water needs.
Maximum working temperature
SANYO's CO2 heat pump can achieve temperatures of 65¼C, ideal for domestic hot water. This temperature is also high enough to remove the risk of legionella. Other systems can only achieve this by using the electric back up automatically every few days.
Simple Installation
The CO2 ECO Heating Domestic System is easy to install consisting of a single 4.5kW or 9.0kW capacity outdoor heat pump unit and an indoor unit tank. The system connects to all standard radiators and under floor heating systems