Change Air Filter Knowledge: Why, When, and How to Keep Your Air Clean and Efficient
- Hot Cold Air
- Oct 27, 2024
- 2 min read
Changing your air filter is one of the simplest yet most important maintenance tasks for your air conditioning system. Not only does a clean air filter keep your indoor air fresh, but it also improves your system’s efficiency and prolongs its lifespan. Here’s everything you need to know about air filters and why changing them regularly makes a difference.

Why Change Your Air Filter?
Your air filter is responsible for capturing dust, dirt, pollen, pet dander, and other particles from the air before they enter your HVAC system. Over time, these particles accumulate, clogging the filter and reducing its effectiveness. A dirty filter can lead to:
Poor Air Quality: A clogged filter allows dust and allergens to circulate, impacting indoor air quality.
Higher Energy Bills: When the filter is clogged, your AC has to work harder to push air through, increasing energy usage.
Reduced System Lifespan: An overworked system is more likely to experience breakdowns and may need replacement sooner than expected.
How Often Should You Change Your Air Filter?
The frequency depends on factors like filter type, household size, and whether you have pets. Here are some general guidelines:
Standard 1-3 Inch Filters: Change every 1-3 months.
High-Efficiency Filters: Change every 6-12 months.
Homes with Pets or Allergies: Change every 1-2 months to keep air cleaner.
Setting a reminder on your phone or calendar can help ensure you never miss a replacement.
How to Change Your Air Filter in 5 Simple Steps
Changing an air filter is usually quick and doesn’t require any special tools. Here’s a step-by-step guide:
Turn Off Your HVAC System: Always turn off your system before changing the filter to prevent dust from entering the unit.
Locate the Air Filter Compartment: This is typically near the return air duct or blower compartment.
Check the Size of Your Filter: Air filters come in different sizes. Check the existing filter’s dimensions, which should be written on the side.
Insert the New Filter: Make sure the arrows on the filter are pointing toward the airflow direction (toward the blower).
Turn the System Back On: Once the new filter is in place, turn your HVAC system back on and enjoy improved airflow.
Choosing the Right Air Filter
Air filters come in different materials and levels of filtration. Here’s a quick rundown of common types:
Fiberglass Filters: Basic and affordable, ideal for light use.
Pleated Filters: More effective for capturing smaller particles and allergens.
High-Efficiency Particulate Air (HEPA) Filters: Great for those with allergies or respiratory issues, as they trap even the smallest particles.
Each filter type has its own pros and cons, so choose based on your home’s needs and your family’s health concerns.
When in Doubt, Let Us Help!
At Hot Cold Air, we know the importance of maintaining clean filters and can provide professional guidance on the best options for your system. We can even include air filter replacements in our maintenance plans to keep your system running efficiently year-round. Regular filter changes not only enhance air quality but also help you avoid costly repairs down the line.
Ready to improve your indoor air quality? Contact Hot Cold Air today to learn more about our air filter options and maintenance services.
Comments