How to stretch a replacement drain hose to fit over the existing pipe

If you've never used a washer successfully at your new house, then you haven't yet ruled out the possibility of a clog or blockage in the standpipe or anywhere else in the waste plumbing system.

Regardless, it sounds like the washer you have now empties a larger and/or faster volume of water into the standpipe, which is undersized for the new load. It's possible that your former washer used less water or emptied more slowly masking the problem of an undersized standpipe.

A more water-wise washer will alleviate this issue, but the real solution is to allow the water to drain more freely, either by unblocking a blockage in the pipes or replacing the standpipe with a larger-diameter one (usually 2" or larger nowadays).

Alternatively, you can rig up a graywater system by attaching the washer hose to a garden hose directed to something outside that you want to get more water. An overview of this sort of system can be found at http://oasisdesign.net/greywater/laundry/

It's possible that it just fell out. Repeated heat/cool cycles plus the force of the water exiting the hose could have broken the bond to the duct tape.

The duct tape could be serving two purposes.

1. To hold the hose into the drain pipe. Judging by the amount of tape this may not be the first time it has happened.
2. If there is no trap in the drain line, the duct tape could be a DIY attempt to block sewer gas from escaping.