Frequently Asked Questions

Do your filters have MERV ratings?
Yes. You can find the MERV ratings for each filter in the Product Description section on the product page. You can also find the MERV rating in the comparison chart on the COMPARE FILTERS page.

Are permanent filters too restrictive?
Some early permanent filters were very restrictive and gave the product a bad reputation in some cases. Some HVAC contractors still tell their customers that all permanent filters are bad.  However, not all permanent filters are created equal. Like any type of filter, there is a balance between dust arrestance and air resistance. Our filters have very low air resistance.  Even our most restrictive filters are no more so than a good pleated disposable filter.

Do your filters require electricity?
No electricity is required. All of our filters are electrostatic. They have special polypropylene media layers that build a natural static charge as air passes through the filter. The charge is broken and the dust is released when the filter is cleaned.

I'm not sure which permanent filter model is best for me?
Please check out our COMPARE FILTERS chart. In addition, feel free to CONTACT US. We can help you choose the filters that's best in your application. We try to reply in 1 hour or less.

How long will your filters last?
With proper maintenance, you can expect your permanent filter to last at least as long as your HVAC unit. Some of our customers have been using their filters for over 15 years and counting.

How do I clean and maintain my permanent filter?
Cleaning is simple and easy. We recommend vacuuming the dust off the filter every month and then backwashing with water every 2-3 months. We also offer an ELECTROSTIC FILTER CLEANER to clean the filter more thoroughly.

What is the cost difference between permanent and disposable filters?
While permanent filters have a higher upfront cost, they save money over time. Most customers recoup their investment within 1 year.

Are your filters available in my size?
Yes. Our permanent filters are available in standard and CUSTOM SIZES. We offer 12 different filter types to fit most needs. CONTACT US if you cannot find your size.

Are your filters environmentally friendly?
Yes! By switching to permanent filters, you eliminate the need for disposable filters that end up in landfills. Our filters are made from sustainable materials and can be used for years, making them an eco-friendly choice for your home.