Your air conditioning system may be to blame. A malfunctioning air conditioning system, a broken thermostat, or leaky ductwork may be blamed. In addition, your HVAC system could need an infusion of Freon or a new filter to run properly. Your house might also suffer from leaks and deteriorated window frames that don't let the air circulate effectively. These issues can be solved by thoroughly inspecting your home's heating and cooling systems. Another cause of a high temperature is an oversized air conditioner. Large units may not cool the entire room and cannot eliminate humidity effectively. This may make the house feel very hot and can even make it feel more desirable than it is. Calculate the square footage to determine which air conditioner size is best for your home. If the air conditioner is too large, it will cool the air before eliminating humidity, which may make the house feel even hotter than it was before. If you've recently completed a home remodel, you may have created an airflow problem that causes the indoor temperature to rise. The walls may have been removed or added to the house, which upset the airflow balance. Some additions will require additional ductwork to get proper airflow. In some cases, the reserve will even need another air conditioning system. If you can't figure out the exact cause, it's time to consult an air conditioning professional.