Finding refrigerant leaks on multi-zone ductless HVAC systems is extremely difficult and time-consuming when visual, bubble, and sniff methods fail.

Existing leak detection methods rely on accessible fittings and line sets, but on multi-zone ductless systems, leaks can occur in hidden evaporator coils or buried lines that are impossible to reach with standard tools, forcing time-consuming isolation and long hold tests.

Severity

4High

Willingness to Pay

implied

Added

Apr 29, 2026

Workarounds Described

visual inspection for oil
nitrogen bubble check on fittings
add refrigerant and sniff with electronic detector
isolate each zone individually and pressurize, then come back a week later to check pressure drop

Implied Software Gaps

Portable device with combined ultrasonic and tracer gas detection that works on enclosed or inaccessible line sets

App Concept

LeakSniffer Pro

A portable, sensitive acoustic and tracer gas leak detector specifically designed for ductless mini-split systems. It combines a high-sensitivity ultrasonic microphone that detects the sound of escaping refrigerant through walls and insulation, plus a wireless tracer gas sniffer that can pinpoint the smallest leaks without needing to access every fitting. It cuts diagnosis time from days to minutes.

Key Features

Ultrasonic acoustic leak detection (detects hiss through drywall or insulation)
Wireless tracer gas sniffer with pinpoint accuracy
Multi-zone system mapping to quickly isolate affected circuit
App-based reporting and leak location tagging

Target Users: HVAC technicians servicing multi-zone ductless mini-split systems, especially in residential and light commercial settings (solo operators to mid-size service companies).

Revenue Model: $350–$500 one-time hardware purchase + $19/mo app subscription for advanced diagnostics and cloud-based leak history

Existing Solutions Mentioned

Visual oil inspectionNitrogen bubble checkElectronic leak detector (sniffing)Isolation and pressure test over a week

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