Reusable Vent Seals for Duct Leakage Testing

Seal supply vents in seconds—without tape.

Vent Caps™ are reusable vent seals designed for the diagnostic testing of ducted air-conditioning systems, also known as duct leakage testing. They install instantly over supply registers to seal the system during testing, eliminating the waste, frustration, and residue of traditional grill mask tape. They can also be placed and removed at a distance to keep you and your team off ladders.

Used by HVAC professionals, energy auditors, and building performance contractors, Vent Caps work with duct testers, duct blasters, and blower door testing equipment to create fast, repeatable duct leakage tests and quickly seal supply vents for duct testing.

Whether you're performing a full energy audit, commissioning a new HVAC system, or verifying duct leakage, Vent Caps make setup faster, cleaner, and more professional.