HVAC filters screen out airborne pollutants that affect the function of your Orlando furnace or air conditioning and lower the quality of your indoor air. Although fiberglass HVAC filters are the cheapest option available, these filters only screen out the largest particles and are not recommended for use in most homes. Polyester and pleated filters are slightly more expensive, but will remove up to 45% of airborne pollutants and are a better choice to protect your home and your HVAC system. High-efficiency HVAC filters screen out 85% of particles from the air and are ideal for homes and buildings where extremely high indoor air quality is essential. If you’re still not sure which type of HVAC filter is best for your system, check with your air conditioning service technician for advice.