Elco MHS 1/2″ DHW Flow Sensor / Flowmeter is a genuine OEM replacement part commonly used in compatible Heating Interface Units. It is designed to monitor domestic hot water flow and support correct system performance during normal operation.
Resideo manufactures this mechanical flow sensor and operates with a Hall effect pulse output. It uses a paddle wheel sensing method and is suitable for professional servicing, repair, and maintenance work on compatible heating and HIU systems.
Its G1/2″ BSPP thread, compact design, and dependable flow monitoring make it a practical replacement part for engineers and trade customers working on DHW-related HIU faults.
Key Features
- Genuine OEM replacement part
- Suitable for compatible Elco / MHS HIUs
- 1/2″ DHW flow sensor/flowmeter
- Mechanical paddle wheel sensor type
- Hall effect pulse output
- Maximum operating flow rate: 35 litres/min
- Measuring range: 2–30 litres/min
- Maximum temperature: 80°C
- Maximum pressure: 17.5 bar
- Nominal voltage: 12V
Suitable For
- DHW flow monitoring
- HIU servicing and repair
- Hot water performance faults
- Replacement during maintenance work
- Professional heating and HIU system servicing





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