The following tips have also been approved by experts in the air conditioning service and repair industry. These tips are very important since they are going to help you with the most common no cooling and low cooling problems that many home owners may be faced with. For you to be able to perform this kind of repair, you are going to need a voltage sniffer, a multimeter, a socket set and a complete assortment of screwdrivers. For you to be able to perform this kind of repair, you are going to need a voltage sniffer, a multimeter, a socket set and a complete assortment of screwdrivers.