"Will you need to remove more heat from your home by continuously removing heat throughout the day or removing excess heat only at the end of the day? The answer boils down to how energy intensive it is to remove heat from your home. It's influenced by many factors such as how well your house is insulated, the size and type of your air conditioner, and outdoor temperature and humidity."
"If the amount of heat flowing into your home is given by a rate of 1 unit per hour, your A/C will always have 1 unit of heat to remove every hour. If you turn off your A/C and let the heat accumulate, you could have up to eight hours' worth of heat at the end of the day. It's often less than that, though homes have a limit to how much heat they can store."
Energy model simulations of heat transfer and air-conditioning performance evaluate whether continuous cooling or intermittent cooling uses less energy. The energy required depends on the intensity of removing heat from the building, influenced by insulation quality, air-conditioner size and type, and outdoor temperature and humidity. Letting a house heat up while unoccupied and cooling upon return can use less energy than maintaining constant temperature, but outcomes depend on building thermal storage and system efficiency. Heat enters when indoor stored heat is lower than outdoors; as the indoor temperature rises the heat inflow rate decreases and homes have finite thermal storage limiting accumulated heat.
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