Blogg

Drain Pans, Blowers, and Return Air: R32 Sensor Placement Tradeoffs

admin2026-10-16T12:24:48+08:00 Three locations often look attractive during an R32 detector design review: a low point near the drain pan, a position near the blower inlet, and a position in the return-air path. Each can be effective in the right cabinet. Each can also fail for a...

How to Integrate an R32 Sensor Into a Wall-Mounted Mini-Split Indoor Unit

admin2026-10-16T12:23:54+08:00 Integrating an R32 detector into a wall-mounted mini-split is a system engineering task. The sensor must encounter a credible leak in time, survive a wet and thermally changing cabinet, communicate reliably with the indoor controller, distinguish a gas alarm from a component fault, and initiate...

How Refrigerant Density, Airflow, and Enclosure Geometry Affect R32 Sensor Location

admin2026-10-15T18:30:48+08:00 “R32 is heavier than air, so install the detector at the lowest point” is an incomplete design method. Density affects buoyancy after release, but a real leak also has momentum, mixes with surrounding air, encounters the coil and drain pan, and may be transported by...

R32 Leak Sensor Placement in a Ducted Split-System Air Handler

admin2026-10-15T18:30:11+08:00 A refrigerant detector in a ducted R32 air handler is part of an equipment-level safety function. Its location therefore cannot be selected from one rule such as “put it low” or “put it beside the coil.” The correct location is the point that detects every...