As October arrives in Crystal Lake, IL, with daytime highs around 65°F and nighttime lows dipping to the mid-40s°F, it’s the perfect time to prepare your furnace for the chilly months ahead. A fall furnace tune-up ensures your heating system operates at peak performance, keeping your home warm and safe when winter temperatures drop below 30°F. At Althoff Home Services, we’re here to help Crystal Lake homeowners get ready with seasonal maintenance that prevents breakdowns and prioritizes safety. Here’s why October is the ideal time to schedule your furnace tune-up.