The Ultimate Guide to Choosing the Right Air Filter for Your AC System

When it comes to the performance and efficiency of your air conditioning system, the air filter plays a bigger role than most people realize. A clean, high-quality filter not only improves indoor air quality but also protects your AC from unnecessary wear and tear.

At Comfort Technical Solutions (CTS), we frequently see AC failures caused by something as simple as a clogged or incorrect filter. Here’s everything you need to know to choose the right one.

✅ 1. Understand the Filter Sizes

Air filters are not one-size-fits-all.
The size you need depends on your air handler or furnace.

Common sizes include:

• 14x20x1

• 16x25x1

• 20x20x1

• 20x25x1

A filter that doesn’t fit properly can reduce airflow, increase energy use, and strain the motor.

Tip: Always check the size printed on your current filter or on your air handler panel.

✅ 2. Know the MERV Rating

The MERV rating (Minimum Efficiency Reporting Value) tells you how well the filter traps particles.

Here’s a quick guide:

• MERV 6–8:
  Good for basic filtration (dust, pollen).

• MERV 9–12:
  Better for homes with pets or allergies.

• MERV 13–16:
  Hospital-grade filtration; captures very fine particles.

⚠️ Important:
A higher MERV is not always better for your system. Some units can’t handle the airflow restriction of very high-MERV filters.

✅ 3. Choose Between Disposable and Washable Filters

Disposable Filters

✔ Affordable
✔ Easy to replace
✔ Recommended for most homes
Replace every 30–60 days.

Washable Filters

✔ Eco-friendly
✔ Long-term savings
❗ Must be cleaned regularly to avoid mold and bacteria buildup.

✅ 4. Consider Your Home’s Needs

Your lifestyle and environment matter.

Choose a better-quality filter if:

• You have pets 🐶

• Someone in the home has allergies

• You live in a dusty area

• You want cleaner air for children or seniors

For commercial locations or clinics, CTS recommends MERV 11–13 for healthier airflow.

✅ 5. Don’t Ignore Filter Changes

A dirty filter can cause:

• Higher electric bills

• Poor cooling performance

• Frozen coils

• AC overheating

• Premature system failure

Changing your filter regularly is the cheapest and easiest way to extend your AC’s lifespan.

❄️ Final Thoughts

Choosing the right air filter is a simple step that makes a huge impact on comfort, efficiency, and system longevity.
If you ever feel unsure, the experts at Comfort Technical Solutions (CTS) are here to help you select the filter that fits your system—and your needs.

📞 (813) 409-0694
🌐 ctsacsupply.com
Keeping your air clean, cool, and efficient.