The total heated area is 3600 m2. To maintain the constant floor temperature in the area around the pool, thermostats with floor sensors were used. Because of the small temperature difference between the floor surface and the room temperature in the pool underfloor heating system can't play the role of the main heating system. The main heating load is carried by high-temperature system (radiators and ventilation). This solution is a standard for water parks, spa centers and swimming pools.