Hotels are an ideal application for water source heat pumps because we can have a water loop covering as much or as little of the building complex, or even buildings as required. Typically the bedrooms suit a horizontal Tranquility 16 Compact unit mounted in a bulkhead over the door or a Console unit. The water loop has none of the energy losses to be expected from a chilled or hot water system or VRF while almost all conceivable hotel bedroom applications would be compliant with EN378 without the need for leak detection.