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Last updated October 8, 2026

Privacy

Filterly is operated by Plenum Inc., Denver, Colorado. This page says what we collect for filter reminders and what we do with it.

What we collect

Your phone number, email address, or both, whichever you give us.

Your filters: names like Upstairs furnace, sizes, thickness, MERV rating, and when each was last changed.

The HVAC company that enrolled you, if one did.

The messages we send you, your replies such as DONE, STOP or HELP, and when the links in our messages are opened.

How we use it

To send the reminders you asked for, to show your filters when you open a link, and to answer you when you reply.

If your HVAC company enrolled you, they see your filters, when you changed them, and whether you have opted out of texts.

Who we share it with

Your HVAC company, if they enrolled you. The companies that deliver our texts and emails and host the service, only to do that work.

We do not sell your information. Mobile numbers and text opt-in consent are never shared with third parties or affiliates for their marketing.

When you follow a store link, the store sees the size you searched for and, when one is set, our affiliate tag. Their privacy policy applies on their site.

Your choices

Reply STOP to any text to stop texts. Use the unsubscribe link in any email to stop emails.

To see or delete what we hold about you, email privacy@filterly.io. We keep a record of an opt-out so we can keep honouring it.

Questions: privacy@filterly.io.