Humidity affects air conditioning negatively because it cancels out the cooling effect. When the humidity is too high, your home will feel warmer than it actually is. You'll have to keep your air conditioning system running but won't derive nearly as many benefits from using it.

Does outside humidity affect central air?

High humidity outdoors and in your building can both negatively affect the cooling potential of your HVAC system. HVAC experts recommend a humidity level below 60% for your building to be comfortable, but that can be difficult to maintain as weather conditions change throughout the year.

Does outside weather affect AC?

Most air conditioning systems are designed to function with outside temperatures of 100 degrees or less. ... When outside temperatures become 95 degrees or higher, your air conditioning system will run at its maximum capacity. When this happens, temperatures inside your home will remain about 78 to 80 degrees.