While temperature setbacks can help save energy and reduce cooling costs, there are a few potential downsides to consider when using them with air conditioning systems. These include:
Comfort Issues: Setting the temperature higher during setbacks may result in less comfort when you return to the space. If the temperature is significantly increased for an extended period, it may take time to cool the area back to a comfortable level once you resume regular occupancy.
Humidity Concerns: Higher temperatures in the space during setbacks can lead to increased humidity levels. Air conditioning systems not only cool the air but also remove excess humidity. If the AC is off or set to a higher temperature for a long time, humidity can accumulate, making the environment feel muggy and uncomfortable.
Air Quality: When the AC system is not operating, the air filtration and circulation are reduced or stopped. This can allow pollutants, allergens, and odors to accumulate in the space. Additionally, higher humidity levels can contribute to mold and mildew growth if the setbacks are implemented for extended periods in humid climates.
Energy Consumption Considerations: While temperature setbacks can save energy when implemented properly, if the setbacks are too extreme or the cooling system needs to work excessively to bring the temperature back down, it may negate some of the energy savings. If the setback period is too short, the AC system may consume more energy trying to rapidly cool the space.
To mitigate these potential downsides, it's recommended to:
- Avoid extreme setbacks and opt for more moderate temperature adjustments.
- Consider programmable or smart thermostats that can gradually adjust temperatures to maximize comfort while still saving energy.
- Monitor humidity levels in the space to prevent excessive moisture accumulation.
- Ensure proper ventilation and air circulation during setback periods to maintain air quality.
It's important to strike a balance between energy savings and occupant comfort and consider the specific climate and requirements of your living or working space when implementing temperature setbacks with your air conditioning system.