An air conditioning apparatus comprising a heat pump device, a heat exchange device installable in a room which can increase a room temperature by supplying a fluid heated by the heat pump device to the heat exchange device, comprising: a hot water outflow temperature detection part which is configured to detect a hot water outflow temperature being a temperature of the fluid after being heated by the heat pump device; a return temperature detection part which is configured to detect a return temperature being a temperature of the fluid cooled by the heat change device; a temperature difference checking part which is configured to detect whether or not a temperature difference between the hot water outflow temperature detected by the hot water outflow temperature detection part and the return temperature detected by the return temperature detection part is smaller than a predetermined first threshold; characterized by a room temperature detection part which is configured to detect a room temperature being a temperature of the room where the heat exchange device can be installed; a room temperature checking part which is configured to check whether or not a post-temperature being a room temperature detected by the room temperature detection part at a lapse of a predetermined period of time since a predetermined timing, is higher than a pre-temperature being a room temperature detected by the room temperature detection part at the predetermined timing, by not less than a predetermined second threshold; and a notification part which, when the temperature difference checking part judges that the temperature difference is smaller than the first threshold and the room temperature checking part judges that the post-temperature is not higher than the pre-temperature by not less than the second threshold, is configured to notify that the heat exchange device has a heat dissipation amount that is insufficient. a hot water outflow temperature detection part which is configured to detect a hot water outflow temperature being a temperature of the fluid after being heated by the heat pump device; a return temperature detection part which is configured to detect a return temperature being a temperature of the fluid cooled by the heat change device; a temperature difference checking part which is configured to detect whether or not a temperature difference between the hot water outflow temperature detected by the hot water outflow temperature detection part and the return temperature detected by the return temperature detection part is smaller than a predetermined first threshold; characterized by a room temperature detection part which is configured to detect a room temperature being a temperature of the room where the heat exchange device can be installed; a room temperature checking part which is configured to check whether or not a post-temperature being a room temperature detected by the room temperature detection part at a lapse of a predetermined period of time since a predetermined timing, is higher than a pre-temperature being a room temperature detected by the room temperature detection part at the predetermined timing, by not less than a predetermined second threshold; and a notification part which, when the temperature difference checking part judges that the temperature difference is smaller than the first threshold and the room temperature checking part judges that the post-temperature is not higher than the pre-temperature by not less than the second threshold, is configured to notify that the heat exchange device has a heat dissipation amount that is insufficient.