No, an air conditioner does not make the inside of your house colder when it turns off at night. In fact, once the air conditioner is turned off, the cooling effect gradually diminishes, and the temperature inside the house will start to rise again.
The primary function of an air conditioner is to remove heat and humidity from the indoor air and cool it down to the desired temperature. When the air conditioner is running, it actively pulls heat from the indoor air and transfers it to the outside environment. This process continues until the thermostat reaches the set temperature, at which point the air conditioner cycles off.
Once the air conditioner is turned off, the cooling effect gradually dissipates because there is no longer an active cooling mechanism in place. The indoor temperature will begin to rise again as heat from the surrounding environment seeps back into the house. The rate at which the temperature rises depends on various factors such as insulation, outdoor temperature, and thermal properties of the building.
To maintain a cooler indoor environment during the night, you can use other methods such as opening windows to allow natural ventilation, using fans to circulate the air, or employing other passive cooling techniques like shading windows during the day or using reflective materials to reduce heat gain.