stinky smell

[sdunnwel]

Hello
I have a terrible stink like sewer smells that periodically erupts sometimes it comes through the vents when the furnace is on and often comes about during washing clothes. I thought perhaps there was some sort of filter that needs to be changed somewhere??? :eek:

[Gary Swart]

There are no filters. The most likely source of the odor is from a trap in a seldom-used drain that has dried out. This could be a shower or a floor drain. If you have such a drain, try pouring a quart or so of water in it to refill the trap. When a drain is seldom used, the water in the trap evaporates and that allows the sewer smell to come through it.

[hj]

OFten it comes from the point where the air conditioning condensate drain is connected to the sewer system, especially if it usually occurs when the furnace is running.