HVAC Drain Pan Line Capped

[David Lyons]

The drain on the pans are capped rather than piped to drain out of the house. I am presuming the presence of an overflow alarm does not negate the need for the drain.

[Jerry Peck]

I am presuming the presence of an overflow alarm does not negate the need for the drain.

Is that switch in the auxiliary drain pan for an alarm, or does it shut the system down?

If it shuts the system down, that is one of the options for the auxiliary drain pan.

[David Lyons]

Is that switch in the auxiliary drain pan for an alarm, or does it shut the system down?

If it shuts the system down, that is one of the options for the auxiliary drain pan.

Thank you.

[Joe Reilly]

I have seen float switches just sitting on the drain pans, and as long as the wiring is correct they should shut off the HVAC unit when it gets wet. So as long as the switch does its job there would be no need, and besides based on the height of the switch it may never be met if the drain line is lower.