The answer to 'how to install aeration' is to use a core aerator machine to punch small holes in your lawn, allowing air, water, and nutrients to reach the roots. This process helps alleviate soil compaction and promotes healthier grass growth.
First, mark any sprinkler heads, tree roots, or other obstacles to avoid damaging them. Then, mow your lawn to the recommended height. Next, use a core aerator to make 2-3 inch deep holes across the entire lawn, spacing them 6-12 inches apart. Be sure to go over the lawn multiple times in different directions. Finally, rake up any cores left on the surface and water the lawn thoroughly.