There may occasionally be situations where a washing machine would benefit from being raised off the floor. One such example would be if it was installed in a basement and was struggling to pump the water up to ground level (see link at end of article).
More reasons to raise a washing machine off the ground
Other examples where raising a washing machine off the ground would be desirable is if the washing machine was installed in an area prone to damp or ingress of water. Or simply to raise the washing machine to a height that makes it much more comfortable to operate.
There are specially designed stands or pedestals to raise a washing machine off the floor. If considering buying one because your washing machine isn’t pumping out fast enough, due to it having to pump too high, try raising it the same amount by placing it on something temporary first to test if it makes the required difference.
However, if doing, so, you would need to put a normal load in to properly test, and you’d need to watch the machine carefully for falling off. I would suggest a couple of rinse and spins should be enough to test it.
Alternatively check out this other option – Installing a washing machine or dishwasher in basement
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