The PosiTest AIR is designed for testing penetrations, joints, seams, and continuity of rigid air barrier systems, membranes, SPF, metal liners, EIFS, and waterproofing systems. It includes a test chamber, hose, test solution, rechargeable batteries, and stores readings including depressurization rate, test duration, limit pressure, and Pass/Fail verdict. The device operates in the differential pressure range of 100-900 Pa and a depressurization rate of 5-30 Pa/sec.
DeFelsko PosiTest AIR Surface Tester solution
Want to spot leaks before they become problems? The PosiTest AIR makes it easy: place the test chamber, apply the test solution, depressurize and watch for bubbles. With clear Pass/Fail cues, internal memory, durable waterproof design, and powerful battery life, it’s built for tough inspections in all positions.
Features
Meets national standard for testing air and water leaks in building envelopes.
Wide pressure range suitable for detecting minor leaks as well as larger ones.
Ensures test is conducted at consistent rate so results are reliable.
Stores rate, pressure limit, duration, and Pass/Fail verdict, enabling later review/export.
Lightweight (3.8 kg), water & dust sealed, built-in rechargeable battery for 200 tests per charge.
Overview
| Specification Item | Unit | Value / Range |
|---|---|---|
| Pressure Differential Range | Pa | 100 – 900 Pa |
| Depressurization Rate | Pa/sec | 5 – 30 Pa/s |
| Test Chamber Size (Base) | cm / inches | Ø 40 cm (≈ 16 in) base |
| Resolution | Pa | 1 Pa |
| Accuracy | ± | ± (10% + 10 Pa) |
| Carry Case Dimensions | cm / inches | 38 cm × 48.3 cm Ø |
| Weight (Instrument) | kg / lbs | 3.8 kg / 8.5 lbs |
| Shipping Weight | kg / lbs | 6.7 kg / 14.7 lbs |
| Power / Battery | — | Built-in rechargeable battery; can operate while charging via AC adapter |
| Included Accessories | — | Test Chamber, hose, test solution, USB cable, universal AC adapter, carry case, test solution bottles, instructions, calibration certificate |




