The ducted Fujitsu’s evaporator coil had oil streaks all over it. Before filming, Matt used an electronic leak detector on the coil and found that each oil site tested positive for refrigerant leakage.

To remove the evaporator coil, Matt opens the panel, pulls out the drain pan, loosens the flares, and removes the screws before taking the coil out. (When handling a coil, it’s a good idea to wear gloves to prevent the fins from scratching or cutting you.)

When putting the new coil in, Matt realizes that some Leak-Lock has gotten into the flare. So, he has to make a new flare before putting the unit together again. After everything is in place, he pulls a deep vacuum and charges the unit.