Dual Effect Heat Pump (DEHP) technology developed by Quantum LegioGuard sets new standards in legionella control with its patented process to heat and cool water simultaneously. This results in thermally sanitised hot and cold water supply to a facility in an energy efficient manner. Coupled with constant and accurate temperature control through the unique four port mixing valve, Quantum LegioGuard is the industry leader in safe, sanitised and reliable cold and warm water delivery.

Utilising Quantum LegioGuard’s DEHP technology, LegioGuard systems heat all incoming potable water to approximately 70 ̊C and simultaneously cool a portion of the 70 ̊C water to between 15-20 ̊C for supply to the facility. All the cold water for amenities passes through the heating process, thereby cold water in the facility is sanitised. LegioGuard systems mix the sanitised hot water and cold water with a large mixing valve (up to 380 litres per minute), distributing sanitised warm water




Hot Temperature 60°C – 75°C
Cold Temperature 15°C – 24°C – User definable
Working Pressure 500 kPa (PRV supplied)
Expansion Control Valve 550 kPa x 2 (supplied)
Pressure Temp Relief Valve 850 kPa x 2 (supplied)
Cylinder Material Vitreous Enamel Lined Steel – Y Class
Anode 2 x Aluminium per Cylinder
Electric Element 3 x 3600W or 3 x 4800W per Cylinder

Recovery Rates

Heat Pump Model Cold Hot
10 kW system 176 LPH 176 LPH
15 kW system 266 LPH 266 LPH
20 kW system 352 LPH 352 LPH
30 kW system 533 LPH 533 LPH

Flow Rates

Valve model Flow Rate Pressure Loss
25mm Valve 80 lt/min 145 Kpa
32mm Valve 180 lt/min 160 Kpa
40mm Valve 280 lt/min 195 Kpa
50mm Valve 380 lt/min 200 Kpa

Please email Quantum in regard to any applicable rebates available for LegioGuard products.

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