public Heating SecondHeating()
        {
            var secondHeating = new Heating {

                 HeatingID = new Int32()
            ,
                 HeatingValue = null

             };

            return secondHeating;
        }
        public Heating ThirdHeating()
        {
            var thirdHeating = new Heating {

                 HeatingID = new Int32()
            ,
                 HeatingValue = null

             };

            return thirdHeating;
        }
        public Heating FirstHeating()
        {
            var firstHeating = new Heating {

                 HeatingID = new Int32()
            ,
                 HeatingValue = null

             };

            return firstHeating;
        }