EcoComfort™by Nusfun Nusfun Sustainable Solutions
Integrated Comfort Energy

EcoComfort™ Integrated Comfort Energy System

Cooling, heating, domestic hot water, heat recovery and thermal storage in one coordinated system.

Designed for comfort, hot water demand and practical building energy upgrade discussions.

EcoComfort integrated cooling heating hot water thermal storage and heat recovery system
Illustrative system overview. The 30–50% figure refers to electricity cost saving under the stated tariff and operating basis, not total energy consumption. Final configuration is subject to project design.

30–50% Electricity Cost Saving

Charge thermal storage during eligible free-electricity and off-peak periods.

Free Hot Water During Cooling

Recover heat from cooling operation to produce domestic hot water.

One Coordinated System

Cooling, heating, domestic hot water and thermal storage.

*30–50% refers to electricity cost saving, not a 30–50% reduction in total energy consumption. The saving is achieved by prioritising thermal-storage charging during eligible free-electricity periods, including applicable three-hour free-use offers, and off-peak tariff periods. Electricity-plan availability, system configuration and operating conditions apply.

Integrated applications

Integrated Applications for Homes, Hospitality, Healthcare and Commercial Buildings

EcoComfort integrated comfort energy system for homes, hospitality, healthcare and commercial buildings

EcoComfort™ is positioned as an integrated comfort-energy system pathway for cooling, heating, domestic hot water, heat recovery, thermal storage and smart control applications across homes, hospitality, healthcare and commercial buildings.

Suitability is assessed project by project — performance depends on building type, climate zone, system design, installation quality and operating conditions.

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One system

Three Functions in One Coordinated System

CoolingHeatingDomestic hot water

EcoComfort is designed to coordinate three major building comfort-energy needs: cooling, heating and domestic hot water. Instead of treating these as separate systems, EcoComfort uses a water-mediated architecture to support more integrated energy management.

Thermal storage

Thermal Storage for Flexible, Lower-Cost Operation

EcoComfort™ uses a thermal storage water tank to partially separate heat-pump operation from indoor terminal demand.

When sufficient cooling or heating energy is stored in the tank, indoor terminals can continue operating without the heat-pump unit starting at the same time.

The system can prioritise charging during free-electricity periods, off-peak tariffs or periods of surplus solar generation, helping reduce peak-time electricity use and optimise operating cost.

Storage Buffering

Indoor terminals can operate from stored cooling or heating without requiring the heat-pump unit to run simultaneously.

Time-of-Use Cost Optimisation

Thermal energy can be stored during lower-cost electricity periods and used later when tariffs are higher.

Peak Shaving and Load Shifting

Stored energy can reduce heat-pump operation during peak-demand periods and support more flexible interaction with the electricity grid.

Note: EcoComfort is designed to deliver 30–50% electricity cost saving under the stated tariff and operating basis. The percentage refers to electricity cost, not total energy consumption. No fixed payback period is implied.

Low-load operation

Reduced Low-Load Operation

In a conventional multi-split system, the outdoor unit must operate whenever an indoor unit is running. When only a small number of indoor units are active, this may create an oversized low-load operating condition.

EcoComfort™ uses the storage water tank as a thermal buffer. The tank absorbs short-term load fluctuations and reduces the need for the heat-pump unit to start and stop in direct response to every change at the indoor terminals.

Architecture

Two-Tank System Architecture

The system uses a two-tank configuration to separate comfort-energy and domestic hot water functions. This supports more flexible control, staged operation and project-specific system design.

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Operation

Simple Control Interface

EcoComfort is designed with a simple control interface for daily operation. The system can support straightforward temperature and operating mode settings, making it suitable for residential users, accommodation facilities and building operators.

Installation

Practical Installation Pathway

EcoComfort is designed for practical installation planning. The indoor unit, tanks, water connections and communication wiring can be arranged according to project requirements. Refrigerant-side work should be completed by qualified HVAC technicians.

Where it fits

For New Projects and Retrofits

EcoComfort may be reviewed for new residential developments, townhouses, hotels, healthcare facilities, aged care facilities, commercial buildings and staged retrofit projects where cooling, heating and domestic hot water need to be assessed together.

Important: Performance outcomes depend on building type, climate zone, system design, installation quality, electricity tariff structure and project-specific operating conditions.

Scale

From Individual Homes to Large Distributed Building Systems

EcoComfort™ can be configured as a single residential comfort-energy system or organised into multiple distributed subsystems for hotels, apartments, offices, healthcare facilities and commercial buildings.

Distributed zoning allows equipment, storage tanks and indoor terminals to be located closer to the areas they serve, helping reduce long-distance energy transport and supporting staged construction, maintenance and future expansion.

FAQ

Frequently Asked Questions

Can indoor terminals operate while the heat-pump unit is off?

Yes. When sufficient cooling or heating energy is available in the storage water tank, indoor terminals can continue operating without the heat-pump unit running simultaneously.

Can EcoComfort use off-peak or free electricity periods?

Yes. Subject to system controls and project requirements, the heat-pump unit can prioritise thermal charging during free-electricity periods, off-peak tariffs or periods of surplus solar generation.

How many heat-pump units can one subsystem support?

An EcoComfort subsystem can be configured with one heat-pump unit and expanded to a maximum of 64 units. Unit 1 acts as the master controller and communicates with the expansion units through a 2-core, 0.75 mm² shielded communication cable.

Is EcoComfort suitable for large buildings?

Yes. Large projects can be divided into multiple distributed subsystems according to floors, functional zones, operating schedules or load profiles.

Discuss an EcoComfort project

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