Clogged drains would be the most common cause of water leaking from your AC into your home. If the drain line gets clogged with dust, dirt, sludge or mold, that water backs up into your home. In that case you will need to get a technician to unclog it.

Usually when air conditioners dont blow cold air, there is a not enough air flow in the air conditioner. ... If the air filter is dirty or clogged, there may be little or no air flow over the evaporator coils, which may cause them to become too cold and frost or ice can form on them, restricting the air flow even more.

If your air conditioners Heat and Cool Unit are not heating properly. ... Make sure the mode switch or selector switch is set to "high heat" and the temperature control is set to a higher number. Also make sure the filter of the air conditioner has been cleaned thouroughly. Incase neither works contact your technician.