The problem...? In a single word: Moisture.
The air exchange between the crawl space and the rest of the house can result in higher energy bills and discomfort in trying to keep the temperature regulated. This also can run greater wear and tear of the HVAC system as it tries to keep up.
Another problem. Radon. Radon is a radioactive gas coming from deep in the earth as uranium decays. This gas accumulates in the crawl space and is again exchanged into the rest of the house. Radon induced lung cancer kills 21,000 people in the US every year.
At some point you will want to sell your home. With these conditions unaddressed the home will take a large hit. Not only to cover for the cost of these repairs, but also for the uncertainty created with the unknowns in anticipating the plan and costs for fixing them. A smarter plan would be to address them now, to get the test of time demonstrably behind them and get the benefit of those repairs keeping you and your family healthy and safe now.
By calling Arizona Foundation Solutions we will brave the depths below for you and present you an engineered plan to get your crawl spaced tamed!