Keeping your home properly ventilated prevents harmful mold build-up incurring do to moisture and condensation. It helps to prevent excessive heat build-up. As well as helping to prevent ice damming in winter. Proper intake venting at your homes soffit below eave with a continuous flow to ridge venting, with an even balance is part of today’s building codes. Installing ridge venting without proper soffit venting can cause a vacuum at the ridge. I’ve personally seen snow pulled into attics due to improper balance. Ask about your options for your home.