What's a WATERSTAGE™?

A WATERSTAGE™ Air-to-water (ATW) System is an environmentally friendly water heating system that uses heat pump technology to extract heat from outdoor air and transfer it indoors.

What is a heat pump?

A heat pump extracts heat energy from the outdoor air. It requires only 1 kW of electricity to generate 3 to 5 kW heat energy.

Proportion of primary energy converted into heating energy of 100%

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The amount of electricity loss varies according to the power plant. Typical energy efficiency of a power plant: 36%

Advantages of a WATERSTAGE™ ATW System

Less carbon dioxide emissions

Average annual carbon dioxide emissions

A WATERSTAGE™ ATW system is an environmentally friendly system that emits substantially less carbon dioxide than conventional gas and hydrocarbon combustion systems.

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Calculations based on energy efficiency data provided by the European Programme for Energy Efficiency in EU-27: 89% for fuel boilers; 93% for gas boilers

Low running cost

Average annual running cost

High-efficiency heat pump technology keeps the running cost of a WATERSTAGE™ ATW system lower than other types of water heater.

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The running cost may vary depending on a system's installation, geographical location, and operating conditions.

Clean and safe

As a WATERSTAGE™ ATW system does not use a burner to heat water, it does not produce NOx or other harmful substances.

Easy to install and maintain

Well-designed hydraulic indoor unit

All components are built into a compact outdoor unit or a hydraulic indoor unit.

The sophisticated arrangement of hydraulic indoor units makes piping and maintenance work easy.

Greater comfort

Water heated by a WATERSTAGE™ ATW system using clean energy is delivered reliably and comfortably throughout the house, including the living room, bedrooms, bathrooms, and swimming pool.