HelloI am building a small budget underground room. On top of a very waterproof and airtight (besides vents) building, and running a dehumidifer inside, I would like to install a pump underneatth the foundation to suck out water from the soil surronding the building but I'm not sure what kind of pump would be best?Also how would b e the best way to set this up?
What you want is called a sump pump. Most have a system built into them that is triggered by rising water. The idea is to have a hole beneath that allows the inevitable water that will collect a place to go, then when a certain amount gets in the hole, the sump pump comes on and pumps it out to wherever you have the hose or pipes ran to. Being underground, good luck keeping the humidity level down. It won't be easy, and much depends on where your natural water table is, and what it is during rains. Someone in your area might know all that, I don't.
