[DangeloInspections]

Contingent on where your Air Handling unit is it could.
In any event, I recommend having one. An A/C float switch also prevents backup from occurring into your A-coil which could also be damaged.

If a back-up occurs one can not only have moisture intrusion to your interior, but also to the fiberglas return ductwork below as well as the plywood box your A/C unit sits on causing the possibility of mold and wood rot, etc in these areas.

A float valve is a simple and inexpensive device NORMALLY installed on most new A/C units. If the condensate line backs up or plugs allowing water to fill up the pipe the float switch will turn off the Air Handler before damage can occur.

This is why when you notice your A/C unit is not working you should always check this first, as it is one of the most common reasons for your A/C not to work. It is a safety device and is a good thing.

Just make sure that when they install the switch in the drain line that the drain line is pitched properly away from the unit to insure water does not ever back up into and around the unit.

A few months ago I inspected a home in The Villages where the drain line had a negative pitch which allowed the condensate, (water) to slowly leak around the unit. A few years of this unchecked filled the return box duct work with mold and actually started to rot the plywood the heavy A/C unit was sitting on. It was an expensive fix that should have been easily avoided if the drain line was simply pitched a quarter of an inch more.

In short, yes, I would want one, (and have one) on mine.

This is also a good time to remind folks to keep your A/C drain line clear by pouring a cup or two of white vinegar down it once every few months to keep it from plugging up, and also do not allow the end of it outside to get covered or plugged. Check it every so often......

Respectfully, Frank D.