Reasons to Replace Your Air Filter

Maintaining your HVAC system is essential for keeping your home clean and comfortable. One of the most important components of this system is the air filter, which helps to remove dust, pollen, and other allergens from the air. However, if you don't change your air filter regularly, it can lead to a variety of problems.

Consequences of Not Changing Your Air Filter

When you neglect to replace your air filter on a regular basis, it can cause several issues. These include:

  • Reduced airflow - As dirt and debris accumulate in the filter, it restricts the amount of air that can pass through it. This results in decreased airflow throughout your home.
  • Higher energy bills - When there is less airflow due to a clogged filter, your HVAC system has to work harder in order to maintain the desired temperature. This leads to higher energy bills.
  • Increased allergens - A dirty air filter won't be able to trap dust and other allergens as effectively as a clean one. This can result in increased allergies for those living in the home.
  • Damage to HVAC system - If an air filter becomes too clogged with dirt and debris, it can cause damage to your HVAC system that may require expensive repairs.

Signs You Need To Change Your Air Filter

In order to avoid these issues, it's important that you change your air filter regularly. But how do you know when it's time? Here are some signs that indicate you need a new one:

  • The filter looks dirty - If there is visible dirt or debris on the surface of the filter then it needs replacing.
  • It's been more than three months - Most experts recommend changing an air filter every three months so if yours has been longer than this then it needs replacing.
  • Decreased airflow - If you notice decreased airflow throughout your home then this could be due to a clogged up air filter so try replacing this first before calling out an engineer.
  • Higher energy bills - If you've noticed higher than usual energy bills then this could also be due to a blocked up or dirty air filter so try changing this first before calling out an engineer.


Replacing your air filter regularly is essential for keeping both yourself and your family healthy as well as ensuring that all parts of your HVAC system are functioning correctly. Be sure to keep an eye out for any signs that indicate it's time for a new one so that you can keep everything running smoothly.