I recently purchased this commercial sized whole home dehumidifier + the 100gph condensate pump for my crawl space last month because of the high summer temps and days of 100% humidity in the Southeastern US.
Before the installation I could not get below 74%RH with or without my central AC running. It never felt comfortable indoors unless we turned on the 2 additional window units but still couldn't get the RH below 70%.
Within 1 week of running the Dehumidifier and pump , I can keep my house 70Deg with 55-60%RH even when it's 105 Degs outside.
At night with AC off, the Dehumidifier will get it down to 40% RH, but we keep it between 50-60% and it has made a world of difference, but I must warn you.... this unit will pull 85 to 125 ppd of water out of the air. Unless you want to continually empty the take , make sure you have it next to a drain or BUY THE CONDENSATE PUMP! I've tied it into my drain line for AC and it comes on when needed and then shuts off. Works flawlessly, like any other VEVOR product I've ever bought.
VEVOR truly makes professional grade tools , at half the price!!