Homeowners often ask two very common furnace questions: “Can I recycle my old filters?” and “Which way should my furnace filter face?” Both questions are important for the health of your system, your indoor air quality, and the environment. So let’s clear things up.
Can Furnace Filters Be Recycled?
The short answer: No, not usually.
Most disposable furnace filters are made of a combination of materials—fiberglass, polyester, cardboard, and sometimes metal mesh. Because of this mix, they cannot be placed in standard curbside recycling.
- Fiberglass filters are not recyclable and must go in household trash.
- Pleated filters (polyester or cotton blend) also typically go in the trash.
- Electrostatic filters with metal frames may allow you to recycle the frame if separated, but the filter media itself must be discarded.
- Washable/reusable filters are an eco-friendly option, since they can be cleaned and reused for several years.
✅ Tip from TemperaturePro Saskatoon: If you are concerned about your environmental footprint and want to reduce waste, consider switching to a reusable electrostatic filter. While the upfront cost is higher, you’ll save money over time.
Which Way Does a Furnace Filter Go?
Installing a furnace filter in the correct orientation is critical to proper airflow and efficiency. Fortunately, it’s easy to get right once you know what to look for.
- Find the Airflow Arrow
On the cardboard frame of the filter, you’ll see an arrow. This arrow indicates the direction air should flow through the filter and into the furnace. - Arrow Points Toward the Furnace
Always install the filter with the arrow pointing toward the furnace. This means the arrow points away from the return duct and toward the blower motor. - Why Orientation Matters
Installing the filter backward restricts airflow, forces your blower to work harder, and reduces efficiency. It can even cause premature wear on your system.
✅ Tip from TemperaturePro Saskatoon: Write the installation date on your filter when you replace it. That way, you’ll always know how long it has been in use and help you avoid forgetting to change it.
Final Thoughts
While most furnace filters can’t be recycled due to their mixed materials, homeowners do have eco-friendly alternatives like washable filters. And when it comes to installation, just remember: airflow arrow points toward the furnace.
At TemperaturePro Saskatoon, we help homeowners extend the life of their furnaces with proper maintenance, professional filter advice, and reliable service.
Need help improving your home’s air quality or choosing the right filter? Contact our team today—we’re here to keep Saskatoon homes comfortable, safe, and efficient all year long.
