Running air conditioning is generally more expensive than keeping the oven door open overnight in the summer, especially when comparing the energy consumption of the two appliances. Here's why:
Air Conditioning: Air conditioning systems use electricity to operate compressors, fans, and other components that cool and circulate air. They require a significant amount of energy to remove heat from the indoor environment and maintain a comfortable temperature. The energy consumption of air conditioning depends on factors such as the size and efficiency of the unit, the temperature setpoint, insulation of the space, and outdoor conditions.
Oven: Keeping the oven door open overnight in the summer may provide a temporary cooling effect in the immediate vicinity. However, ovens are not designed to cool spaces efficiently, and their primary function is to generate heat for cooking. While the oven door open allows some heat to escape, it also lets the residual heat from the oven radiate into the room. The overall cooling effect may not be significant, and it is not an energy-efficient or recommended method for cooling a space.
In terms of cost, running an air conditioning system will likely consume more electricity and result in higher energy bills compared to keeping the oven door open. Air conditioning systems are designed for cooling purposes and are generally more energy-efficient than ovens.
If you are concerned about energy consumption and cost, it is advisable to use your air conditioning system efficiently and consider alternative methods for cooling, such as using fans, improving insulation, closing curtains or blinds to block sunlight, and implementing energy-saving practices like setting the thermostat to an optimal temperature.