1. Is it normal to have water in the drain pan of evaporator coil?
The drain pan is used as a secondary drain. When the primary drain can’t handle drain properly then the drain pan will catch surplus water. Therefore, if your drain pan has water that means the main drain needs to be cleaned or fixed..
2. When the drain pan in fan coil is cracked, do we have to replace the entire unit or can we just replace or fix the drain pan?
The whole fan coil will need to be replaced if your unit is too old to find the matching part. You can also use good caulking or seal material to seal up the cracked pan.
3. There is water under central air unit outside. It is not a lot of water but just enough to wet the concrete pad the unit sets on. Is this normal or something I should have looked at? During the summer and winter?
During the summer time: The outdoor condenser unit is supposed to be hot and dry. If you have water under the unit, your unit may have ice forming around the compressor, which means that the AC system is not in good efficiency condition. To fix this, the refrigeration will need to be charged up. During the winter time: Water under your central AC unit is normal because your outdoor heat pump unit is defrosting while it runs.
4. Is it normal to have water coming out of the indoor unit when the AC is on?
No, it is not normal. It's either your drain pan is cracked or clogged, or your drain pipe is clogged.
5. The evaporator in the attic on the indoor unit has water pouring out and there is 1 ½” water in the pan, worked on it today and clean the coils and fixed the air duct from the unit that was damaged. I put it back together and it started doing the same, making water.
Your drain pan, which is under the coil, is either cracked or not grading well since water cannot get into the drain pipe and drain out.
6. Why does my floor vent have water in it?
There may be a plumbing pipe leak.
7. The condensation shut off valve keeps filling up and shutting down the system, and there is nothing clogging the drain pipes after multiple flushes.
The shut off valve is defective, therefore needs to be replaced or removed and the wires need to be jumped.
8. There is leaking water from the inducer assembly. All drain lines and traps are clean. The water puddles below the inducer are causing rust formations. The furnace runs without incident. Is it an assembly problem with the inducer?
If the inducer is not properly assembled, it will rust and cannot drain the condensate water.
9. My furnace is working fine, but the humidifier is leaking a lot of water. What should I do?
You can unplug the humidifier power cord to stop the humidifier from draining water out. Open the humidifier cover to:
Replace the water filter.
Replace filter track.
Clean the drain pipe to make sure the water flow is not blocked.