Method for providing cooled air

A method for providing cooled air, using a heat pump configured to provide heated water, the method comprising:

• modifying a target temperature of water in a water tank from a first, default, target temperature T1 to a second target temperature, T2, where T1<T2;
• receiving air at a first air temperature T3;
• extracting heat energy from the air, using a heat pump, the extracted heat energy being stored as heat energy in water in the water tank;
• and
• providing cooled air, the cooled air being at a second air temperature T4, where T4<T3.

A system for providing cooled air, using a heat pump configured to provide heated water, the system comprising:

• a first air inlet for receiving air at a first air temperature T3;
• a heat pump, in fluid communication with the first air inlet, for extracting heat energy from the air;
• a water tank for storing the extracted heat energy as heat energy in water in the water tank;
• a first air outlet, in fluid communication with the heat pump, for providing cooled air, the cooled air being at a second air temperature T4, where T4<T3;
• and
• a controller, configured to modify a target temperature of water in the water tank from a first, default, target temperature T1 to a second target temperature, T2, where T1<T2.