Sure thing. First make sure all your vents are clear—dust or cables blocking a rack will bite the airflow right off the first few feet. Next, tighten any loose connections on the fans; a wobbly blade can drop the airflow a lot. If you’re using those big server fans, try turning them off when the room’s cooler at night and only run them on the day shift; it cuts power a lot. You can also add a few low‑cost inline fans to pull air through the hot aisles instead of letting it just stack up. Finally, put a simple temperature sensor on each rack and keep an eye on it; if one spot gets too hot, swap a hot unit for a cooler one or add a small desk fan. Those tweaks usually shave a decent chunk off the energy bill without breaking the bank.