Their reminder. Your logo.

Filter Cipher™ is a simple, durable tool that attaches to the furnace cold air return to remind homeowners when filters changes are needed. It keeps your company’s logo in front of homeowners year-round. With each furnace filter change your brand stays top-of-mind, reinforcing trust and securing repeat business.


A simple tool with lasting impact•Your brand in view, every day•Tracks up to 6 filter types and date for filter replacements•Durable, patent-pending design.


Turn every filter change into a reminder of your brandYour logo, always visible → Each unit is permanently branded with your company name and number.Keeps customers loyal → Every time they look at their furnace, they see you — not a competitor.Professional touch → A simple leave-behind that your customers will actually use and shows you care about service and follow-through.


Custom branding made easy• No files required — we pull your logo.• Sample approval before production.• Typical lead times: 5–15 business days.


How It WorksSimple. Visual. Permanent.
Every Filter Cipher is designed for quick setup and long-term visibility right where homeowners see it most.
Stick it on — Peel off the protective liner from the 3M adhesive backing and apply the Filter Cipher to the furnace cold air return.Set the rings — Lift the hinged cover & rotate the three rings to mark filter type, month, and year for next filter change.Close the lid — The hinged cover locks your settings in and keeps your logo in full view.Result: Every filter change leaves a professional impression — and a clear reminder of who to call for HVAC service.Built from rugged, durable materials to withstand the harshest of HVAC environments.


Trade PricingContractor Packs (30 units/case): $5.99–$7.95 per unit depending on volume.Custom lid colours: +$0.15/unit per colour.Shipping: Billed at cost.


Request a Quote for Custom-Branded Filter CiphersFill out this form and we'll send you a full pricing sheet with additional ordering info.


About ForeintAt Foreint, we design and build smart, rugged tools — and custom 3D-printed solutions — to simplify everyday challenges, whether in the field, the shop, or the facility.Every Filter Cipher is precision 3D-printed in Canada, engineered for long-term durability, and backed by obsessive attention to detail.

Filter Cipher™ and Their reminder. Your logo.™ are trademarks of Foreint Ltd.