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Order Furnace Filters Or Schedule a Furnace Filter Replacement in Appleton, WI!


Are you a home or business owner in the Appleton or Fox Valley area looking for furnace filter replacement services? At Modern Sheet Metal, we provide replacement furnace filters, and filter products.

We are a local Carrier certified dealer with decades of experience with both A/C and furnace filter replacement services. At Modern, we stock a wide variety of humidifier filters, furnace filters, and water panels to serve your needs from the brands Carrier and Aprilaire. These furnace filters include the Infinity air purifier, Performance filter cabinet, and others.

Need a different filter that’s not listed below?

Give us a call at (920) 733-4713 for more filter options!

Infinity Air Purifier

Carrier’s Infinity Air Purifier whole home air purification system. Call us at (920) 733-4713 for questions about a furnace filter replacement in Appleton or to order today!

  • Whole home air purification system
  • Long-life MERV 15 furnace filter
  • Patented Captures and Kills™ technology
  • Captures up to 95% of particles .30 to 1.0 microns in size
  • Kills or inactivates up to 99% of germs, pollen and mold captured
  • Proven effective against 13 common pathogens
  • 10-year parts limited warranty
Carrier Air Cleaner
Residential Carrier Filter

Performance Filter Cabinet & Air Furnace Filter

Introducing Carrier’s Performance Filter Cabinet and Air Furnace Filter. This is an easy-to-replace filter. For questions or to order, please call us at (920) 733-4713.

  • MERV 8 efficiency
  • Easy-to-replace cartridge style furnace filter
  • Low pressure drop for system protection
  • Superior particle removal
  • Improved indoor air quality
  • Standard or continuous fan operation

Types of Furnace Filters

To help you gain the longest lifespan possible for your furnace, you will want to ensure that you are replacing your furnace filter as regularly as possible. The same is true for your air conditioning unit.

One of the ways to know how often you should perform a furnace filter replacement is to determine the kind of filter you have. Some of these require being changed out every 30 days to once a year:

Furnace Filter Replacement FAQs

How Often to Change Furnace Filters?


You may be wondering how often you’ll need to change your air filter. The answer is that it depends on the system you have. Some air filters will need to be replaced every 30 to 60 days while others can be changed out every 6 to 12 months. When in doubt, check with your HVAC technician or follow the manufacturer’s recommendations. Here are some general guidelines to follow:

For 1″ – 2″ filters, replace them every 1-3 months
For 3″ – 4″ filters, replace them every 6-9 months
For 5″ – 6″ filters, replace them every 9-12 months

Reasons to Change My Furnace Filter?

If you neglect to perform a furnace filter replacement, you will eventually experience low airflow throughout your system. As a result, your A/C unit will have to work extra hard to maintain your comfort. This will, in turn, draw more electricity and ultimately increase your energy bills. Regularly updating a clogged filter can increase your A/C system’s efficiency between 5 and 15%. If you ignore your dirty air filter, it will cause your fan motors and other components within the system to work harder. This can unfortunately shorten the lifespan of your HVAC system if not dealt with. Lastly, to keep you and your family comfortable, you will want to change your filters often. Neglecting a dirty air filter can cause problems with keeping your home cool and may even cause family members to feel uncomfortable with your indoor air quality.

What Does MERV Mean on Furnace Filters?


What is Minimum Efficiency Reporting Value (MERV)? This is a rating of the air filter’s ability to trap airborne particles and ability to keep good airflow. You will see MERV ratings labeled between 1 and 16. The value 16 stands for the best filtration available on the market.

What If a Family Member Has Allergies or Asthma?

Do you or another family member have allergies or asthma? The number of times you change your filter will be paramount to your/their health and comfort. We recommend choosing a filter with 12 to 16 MERV for the most effective removal of airborne particles. Ensure you check your A/C or furnace once a month.

What If I Have Pets?


If you have pets in your home, you will need to consider several factors as that will determine how often you may need to change your air filter. This includes factoring the number of pets, their size, and their hair length. The more pet dander and hair, the higher volume of airborne particles your air filter will need to trap. Additionally, your pets will likely bring in additional dirt, dust, bacteria, viruses, and even insects into your home. If you have only one pet, you likely can just follow the recommendations as provided by the filter manufacturer. However, if you have several pets, you should check your air filter at a minimum of once every 30 days.

Where to Buy Furnace Filters?

Modern Sheet Metal not only provides furnace filter replacement and installation services, but we also sell furnace filters. If you can’t find the specific furnace filter you need, please contact us today!

Find a Local Furnace Filter Replacement Professional

If you need assistance with your furnace filter replacement, or if you have any concerns, you will need to schedule an appointment with your local HVAC company. Please reach out to Modern Sheet Metal today for assistance with diagnosing and servicing your HVAC system. We also have other heating and cooling products available.

To start with ordering a furnace filter, please give us a call today at (920) 733-4713. A friendly team member will help you order a Carrier or Aprilaire air filter, or schedule a service.

Looking for a different filter? Give us a call at (920) 733-4713 for more filter options!

Modern Sheet Metal provides furnace and air conditioner service, repair, replacement and installation throughout Appleton, Neenah, Menasha, Darboy, Kimberly, Kaukauna and Greenville. Please call us at 920-733-4713 to discuss your residential or commercial heating & cooling needs!