The answer to 'should I get air filter or' is that it depends on your specific HVAC system and needs. Air filters and air cleaners both help improve indoor air quality, but they have different features and benefits.
Air filters are designed to trap larger particles like dust, pollen, and pet dander, while air cleaners use advanced technology like HEPA filters or UV light to capture even smaller airborne contaminants. Air cleaners are generally more effective at removing a wider range of pollutants, but they also tend to be more expensive. The best choice for your home will depend on your budget, the size of your space, and your specific air quality concerns.