[Topspinmo]

Sally, no it not. Majority don’t know how the system works.

If you go outside usually beside the ac unit there will be PVC white pipe sticking up usually with curved portion end. On hot muggy day condensation from the A COIL inside you a/c heat unit in the garage has to drain condensation off. It goes from the bottom of the catch pan below the A coil out to white PVC drain pipes. not away’s The S curve can be seen (mine is underground, not visible) The S curve keeps critters and smell from backing up into you ac unit. This usually where crud (dust and rust) forms or at the up elbow outside and narrows the drain capability (the slow but steady drip drip at the outside by the unit. Over years it can buidup enough to back up into the ac/heat unit which you will see moisture where you never seen it before.

Can put chemical (usually white vinegar) down the access y-fitting as shown in pictures to minimize the buildup deposits (crud as described). But, nothing good as pressure flush) Most familiar with the system operation will flush it out every few years or if older house with unknown condition. Basically to keep the drain system draining properly.