Thank you for your reply. I guess where I am puzzled is that we had no problems like this with the previous washer and it wasn’t until this whirlpool model had been in for a year that this odor started occurring when the washer drained. As I said we have lived here over 12 years and I would say most all the other garden homes are built the same. Very
There are a couple of things that may be at play here. One is that front loading washers have a tendency to develop an odor. The smell could be coming from within the washer, but that should be pretty clear to you if you stick your head in there after it has sat unused for a couple of days.
The other and just as likely problem is that the newer washers pump their water out much faster than the old top-load units. This requires the washer drain piping to be 2" and the standpipe, trap, and vent all must be properly installed to ensure that the washer drain works properly without siphoning the trap.
A vent that dead-ends in an attic space never met code in any location in the U.S. This is a sign to me that there may vety well be substandard plumbing eksewhere, making it a potential concern.
Without knowing the layout and type of piping that is in place, we can only speculate as to what the fix may be.