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Question DetailsAsked on 6/16/2012

Why when I used the air conditioner, the bottom of the furnace is wet?

When the air conditioner is turn on, the bottom of the furnace is leaking wet?

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4 Answers


your drain might be cloggd up. check and make sure the condensation from the air condition coil is draining. should be a white pvc drain line off of the coil...any questions feel free to give me a call! :) 410-279-8337 (dan) hvac tech!

Answered 8 years ago by ps700


You have two probable conditions. First, your condensation drain line is plugged and needs to be cleared, and/or second, your evaporator drain pan has rusted out and is leaking.
First is relatively easy, using compressed air, blow out drain line(could be messy).
Second call a qualified and licensed HVAC contractor.

CSLB# 824188


Answered 8 years ago by AirTekHP


Make sure the big copper pipe that runs out of the air conditioner coil is insulated with foam insulation. (The air condition coil is usually on top of the furnace enclosed in a metal box called a plenum.) If this pipe is not insulated condensation will accumulate and drip onto or in the furnace. Water dripping in the furnace can shorten the life of the furnace. This would be the cheapest repair if this is the problem. The cost of a 5 foot section is about $1.00.

Answered 8 years ago by Homefront Inspection


One of the drain tubes (overflow) is plugged. Unhook each one and clear them of any debris.


Answered 8 years ago by Canaduct

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