They are the core of the system and it is thanks to them that you can get a very precise control of the temperature output from air diffusers.
EEVs offer 500 adjustments, due to an accurate electronic control, and allow precise operations of the air handler at the tenth degree (0.1°F)! Refrigerant line, compared to hydraulic line, allows you to optimize performance, and to minimize the wait time in getting desired temperature into the air handler.
In addition, it is possible to have one room at a working temperature of 77°F (25°C) and another at 68°F (20°C), simply by adjusting air handlers coils at different temperatures. Each valve has a dedicated microprocessor that manages and communicates wih the CPU. On the contrary, chillers have the same water temperature for all its air handlers and the thermostat only controls fan speed.
On mega yachts over 150ft we offer the VRV heat recovery technology, where each cabin can choose its desired temperature of cooling. Moreover, at the same time some cabins can operate cooling while others heating.