I have a crawlspace that runs anywhere from 12" to 18" high (extremely tight), 3 houses from a lake. The house is on very low land (the land is actually at lake level), and if the weather so much as drizzles, there is standing water under the house. In the Spring and Fall, this Flotec pump kicks on roughly every 2 minutes, 24 hours a day, during these rainy seasons. I installed it over 11 years ago, and it has never failed to do just that... pump water out every 2 minutes.... for all that time. It just now seems to have finally given up the ghost. Considering the CONSTANT workload thrown at this thing, you can't possibly ask for more. You DO need to anchor it to the bottom of the plastic pit-tub with some rocks/bricks to keep it steady and in position (lean them on top of the base), but if you simply take the time to install it properly like that, it works like crazy! Never had one single problem where it failed to operate. I am buying another one right now as it's replacement and expect it to provide another decade of non-stop workhorse service!