In this master’s thesis, the project of heating, cooling, ventilation and preparation of hot water for the Kindergarten Grabrik in Karlovac is elaborated. For heating installations, the City Heating Plant will be used. The existing connection needs to be adapted to the new thermal station. To cool the space, a chiller will be applied to the concrete foundation near the thermal substation. A chiller is an air / glycol heat pump that can also operate in the heating system in the transitional period until the District Heating Plant is started. The preparation of sanitary water is carried out in the central boiler, primarily through the solar system for preheating the domestic water, and then using the hot water from the City District Heating Plant and the electric heater. Water recirculation is preformed for all nursery facilities. Hot water is limited to the temp of approx. 38°C to prevent burns. For kitchen use there will be different water line with a higher temperature level (approx. 50°C) which will be used for the needs of the kitchen to maintain the cleanliness of the kitchen equipment. Space ventilation is provided mostly naturally through switch windows wherever possible. Exhaust forced ventilation is applicable in all toilets. The facility will have a professional kitchen for food preparation, and will use liquefied petroleum gas (LPG) the mixture of propane and butane gas. The LPG container will be installed above ground on a concrete foundation in the nursery yard at a safe distance, respecting all prescribed safety zones.