Top 5 Filters You’re Probably Forgetting to Replace
At DiscountFilters.com, we know life gets busy—and filter changes aren’t always top of mind. But some overlooked filters play a big role in keeping your home clean, safe, and efficient. We’ve put together a list of five filters you might be forgetting to replace (or didn’t even know existed!). If any of these are hiding in your home, now’s the perfect time to check—and we’ve got replacements ready when you need them.
1. Refrigerator Air Filters
Did you know your fridge might have an air filter?
Many newer refrigerator models include a built-in air filter to help neutralize odors and keep food fresher for longer—kind of like a modern version of that old box of baking soda. These filters often go unnoticed, even by homeowners who are good about replacing their water filters.
Signs you need to replace it:
- Persistent or unusual odors in the fridge
- It’s been more than 6 months since your last replacement
- You didn’t know your fridge had one (time to check your model!)
2. Range Hood Filters
Two filters, one job: cleaner kitchen air.
If you have an over-the-range microwave, it probably contains two types of filters:
- A grease filter (usually aluminum mesh) that traps particles from cooking oil and food
- A carbon filter that helps reduce lingering cooking smells
Why it matters:
- Grease filters can get clogged, reducing airflow and performance
- Odor filters lose effectiveness over time
- Dirty filters can pose a fire hazard
3. Shop Vac Filters and Filter Bags
Using a Shop Vac for projects? Don’t skip the bag.
Whether you’re cleaning up drywall dust, sawdust, or basement cobwebs, your Shop Vac deserves a little attention. While many people remember to replace the main filter, they often forget the filter bag—a crucial piece that helps trap fine debris.
Why use a filter bag?
- Keeps your main filter cleaner, longer
- Improves suction and airflow
- Makes disposal of debris cleaner and easier
4. Vacuum Cleaner Filters
Bagless vacuums still have filters—and they need love too.
Most of today’s bagless vacuums come equipped with both pre-filters and post-motor filters. These help trap dust, pollen, and other allergens, ensuring the air leaving the vacuum is cleaner than the air going in.
What to look for:
- HEPA filters that look gray, dusty, or clogged
- A noticeable drop in suction
- Unpleasant odors when running your vacuum
5. Whole House Humidifier Filters (Water Panels)
Seasonal comfort starts here.
If you live in a colder climate and use a whole house humidifier, there’s a good chance it contains a water panel (sometimes called a water pad). This filter helps add moisture to dry winter air and should be replaced at least once per heating season.
Why it’s important:
- Prevents mineral buildup and mold growth
- Ensures proper humidity levels for health and comfort
- Helps protect wood floors and furniture from drying out
Final Thoughts
If any of these filters sound familiar—or completely new—you’re not alone. That’s why we carry easy-to-install replacements for all of them at DiscountFilters.com. A small replacement today can mean cleaner air, better performance, and longer life for your appliances.
Need help finding the right filter?
We’re here to help! Browse by model or category, or contact our team for expert guidance.