Frequently asked questions

Everything you need to know about how CompareFilter works. Can’t find your answer? Get in touch.

Does CompareFilter.com sell filters directly?

No. We are a comparison service. We show you where a filter is available and at what price, then send you to the retailer of your choice to complete the purchase.

How do you make money?

When you buy through some of our links, we earn a small commission from the retailer at no additional cost to you. See our Affiliate Disclosure.

Are the prices shown live?

We collect prices from retailer websites and data feeds and refresh them regularly, but prices can change at any time. Always confirm the final price on the retailer's website before buying.

How do I find the right filter for my appliance?

Search by your filter's part number or model (for example, "MWF" or "20x20x1"), or browse by category and brand. Each product page lists the models it fits.

I found a wrong price or a broken link. What do I do?

Please tell us at contact@compare-filter.com and we will fix it as quickly as we can.

I'm a retailer — can I list my store?

Yes. Visit our Register Your Store page to get started.

Still have a question?

We reply within one business day.