It’s one of the most common pieces of HVAC advice you’ll hear: “Change your air filter regularly.” But how often is really necessary—and what happens if you don’t?
At James’ Plumbing & Heating, we get this question all the time. Here’s what homeowners need to know about air filters, why they matter, and how often they should be replaced.
Why Air Filters Matter
Your HVAC system’s air filter traps dust, dirt, pet dander, and other airborne particles. This helps:
- Improve indoor air quality
- Protect HVAC components from damage
- Maintain efficient airflow and energy use
What Happens If You Don’t Change It
A clogged or dirty filter can cause a number of problems:
- Reduced airflow: This forces your HVAC system to work harder, using more energy.
- Poor air quality: Dust and allergens circulate throughout your home.
- System wear and tear: Over time, restricted airflow can lead to breakdowns and expensive repairs.
So, How Often Should You Change It?
There’s no one-size-fits-all answer, but here are general guidelines:
- Every 1–3 months for standard 1-inch filters
- Every 6–12 months for high-efficiency filters (like HEPA)
- More frequently if you have pets, allergies, or live in a dusty environment
Tip: Check your filter once a month—if it looks dirty, it’s time to replace it!
Signs Your Filter Needs Changing
- Your HVAC system is running more than usual
- You notice more dust in your home
- Allergy symptoms are acting up
- It’s been over 90 days since your last change
Easy Maintenance = Long-Term Savings
Changing your air filter is one of the simplest and most cost-effective ways to care for your HVAC system. It extends the life of your equipment and keeps your indoor air cleaner.
Need help with routine HVAC maintenance or not sure what kind of filter your system uses? Give James’ Plumbing & Heating a call—we’re happy to help keep your home comfortable year-round.
Call 505-473-7148 or schedule your HVAC checkup online today!