When it rains a lot (usually 2-3 days), water eventually seeps in from the surrounding ground and goes through the wall. If the ground is saturated outside and it is still pouring rain on top of that, water can come in at a rate of maybe 30-50 gallons per minute during the "worst" times of the rain. This is a pretty rare event and it takes a big weather system with lots of heavy rain to do it. It might be once or twice per year when the pumps are needed. However, when they are needed, they really are needed.
That water heater is sitting flat on the dirt as you can see. Essentially it would be in a muddle puddle if it rained a lot and the dirt floor got wet with the water running across it. I'm planning to get a plumber out in the near future to change it with a new water heater and elevate it on something. Should be able to get somewhere between 2 and 2.5 feet elevation on that new water heater. That heating/air system, on the other hand, can't go anywhere. Max elevation is where it is at currently, at probably 1 foot off from the dirt floor of the hole. This machine is 4 years old. I understand that it was $4,400 when first put in. They were stupid and should have flipped it and hung it from the floor when they installed the new system. But, they didn't, so we have this scenario. I called the company who installed it. They want $2,400 to $2,600 to basically flip it sideways. Whether that particular thing gets done or not, here are my thoughts:
I'm pondering getting dimple board/sheet drain and going all the way around the inside of the wall with it, then covering the floor of the hole with about a foot of drainage rock of some type that the water can flow under/through. The sump hole at the pump end would be dug out a little deeper, a sump basin installed within the gravel/rock (which would be deeper due to the dug out hole) and new submersible pumps put in in the enclosed basin. I couldn't really cement over the gravel or anything like that with the elevated water heater there and/or the system there.
Any ideas? We'd like to sell the house in the future and I don't want to leave anyone else the disaster we've been trying to figure out. Also...would fixing all of this improve the property value or not really?