web Frequency: Schedule a tune-up at least once a year, More Info ideally in the spring before the cooling season begins, to optimize your system’s performance and efficiency.You substantially reduce the risk of your air conditioner blowing hot air with a cooling tune up. Check out our blog about your AC blowing cold air if you omdat to learn more.2. Routinely Replace or Clean Your Air Filter: As mentioned previously, a clean air filter is essential for efficient system operation, so be sure to check it monthly and replace or clean it as needed.