Using a filter with a MERV rating that is too high for your HVAC system can cause several issues. MERV, which stands for Minimum Efficiency Reporting Value, is a scale that measures the effectiveness of air filters at capturing particles. Filters with higher MERV ratings capture smaller particles, providing better filtration. However, using a filter with a MERV rating that is too high for your system can lead to the following problems: Reduced airflow: High MERV filters are more dense, which means they can restrict airflow in your HVAC system. This can cause your furnace or air handler to work harder, leading to reduced efficiency, higher energy bills, and increased wear and tear on your system. Strain on the blower motor: Due to the restricted airflow caused by high MERV filters, the blower motor may need to work harder to push air through the filter. This can strain the motor and may lead to overheating, reduced motor lifespan, or even motor failure. Reduced comfort: The restricted airflow caused by a high MERV filter can result in uneven heating and cooling, leading to hot and cold spots throughout your home and reduced overall comfort. Increased system malfunctions: When your HVAC system works harder due to restricted airflow, it can increase the likelihood of malfunctions and breakdowns. To avoid these issues, it is essential to choose an air filter with a MERV rating that is compatible with your HVAC system. Check your system's owner's manual or consult with Martino HVAC to determine the appropriate MERV rating for your system. Generally, a MERV rating of 8-13 is suitable for most residential systems, providing adequate filtration without significantly affecting airflow. Regularly replacing or cleaning your filter, as recommended by the manufacturer or Martino HVAC, will also help maintain optimal system performance and efficiency.