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Q-ton Hot Water Heat Pump

The Q-ton is a high-efficiency hot water heat pump that utilises CO2 gas to provide sanitary-grade hot water and space heating solutions. Ideal for various commercial applications, including aged care facilities, hospitals, breweries, wineries, food processing plants, hotels, gyms and more, Q-ton stands out for its exceptional performance in temperatures as low as -25°c and it’s superior reliability. Its innovative use of CO2 and advanced component design allows it to offers huge reductions in both power consumption and carbon emissions, making it perfect solution for environmentally responsibly businesses.


POWER: Three Phase  | HEATING CAPACITY: 30.0kW

Key features

  • Delivers 90°C hot water in as low as -25C ambient temperatures
  • Easy to use touch screen control with advanced functions
  • Offers massive reductions in both running costs and Co2 emissions
  • high quality, robust technology and components
  • Much smaller footprint compared to gas boilers
  • Modular installation from 30Kw up to 480Kw (1 to 16 units)

What is Q-ton?

Q-ton is an air-to-water heat pump which utilises patented compressor technology and CO2 gas as a refrigerant to offer a reliable and efficient hot water solution for a range of commercial applications. The Q-ton utilises the world’s first two-stage compressor (combining rotary and scroll technology) to maintain high efficiency and significantly high performance, even with cold outside air temperatures.

In addition to offering a sanitary grade hot water solution, Q-ton can now also be used in variety of space heating applications with return temperatures below 30°C. This is addition to delivering sanitary grade hot water, offering even further cost savings and efficiencies.

How Does Q-ton Work?
Q-ton works by absorbing heat contained in the air and then the world’s first patented rotary scroll (2 stage) compressor, compresses the CO2 refrigerant before transferring this absorbed heat to the water instantaneously supplying hot water from 60°C to 90°C.

Features and Benefits

Q-ton delivers outstanding performance and environmental benefits to a varied number of applications and is exceptionally energy efficient ensuring large reductions in both power consumption and carbon emissions.

COMMERCIAL APPLICATIONS

HOSPITALS

AGED CARE

RESTAURANTS

EDUCATION

MANUFACTURING

GYMS & SPAS

APARTMENTS

OFFICES

HOTELS

BREWERIES & WINERIES

FOOD PROCESSING

Accreditations

The Q-ton is manufactured in our state of the art facility in Japan which a ISO 9001 approved factory developed specifically for the manufacture of high quality and high performance air conditioners and heat pumps.

 

Unique Patented Compressor Technology

The Q-ton hot water heat pump utilises the world’s first patented rotary scroll (2 stage) compressor and CO2 gas to efficiency deliver hot water from 60°C to 90°C in temperatures as low as -25°C


SELECT A CAPACITY TO VIEW SPECIFICATIONS

THREE PHASE
Specifications
SELECTED MODEL: SRK20ZSA-W / DXK06ZSA-W
Capacity
COOLING:
HEATING:
Energy Labels
Hot
COOLING:
HEATING:
Average
COOLING:
HEATING:
Cold
COOLING:
HEATING:
Dimensions (HxWxD)
INDOOR:
OUTDOOR:

What is a CO₂ heat pump hot water system and how does it work?
A CO₂ heat pump hot water system is an energy-efficient system that utilizes carbon dioxide (CO₂) as a natural refrigerant to heat water. It operates by extracting ambient heat from the surrounding air, even in low temperatures, and transferring it to the water through a refrigeration cycle. This process involves the CO₂ refrigerant absorbing heat, being compressed to increase its temperature, and then releasing the heat to warm the water before the cycle repeats. Unlike traditional gas or electric water heaters, this allows CO₂ heat pumps such as the Q-ton to achieve a Coefficient of Performance (COP) of 4.3 meaning they generate 4.3 times more heat energy than the electricity they consume. This results in significant energy savings and a reduced carbon footprint.
What are the benefits of a CO₂ heat pump hot water system?
CO₂ heat pump hot water systems such as the Q-ton offer numerous advantages over traditional gas and electric water heaters, including:
  • Superior Energy Efficiency – They use up to 60% less energy than electric water heaters, significantly lowering electricity costs.
  • Lower Carbon Emissions – By utilizing CO₂ as a natural refrigerant, these systems produce far fewer greenhouse gas emissions compared to gas or traditional heat pumps.
  • High-Temperature Hot Water – Unlike standard heat pumps, CO₂ systems can heat water up to 90°C, making them ideal for commercial applications.
  • Reliability in All Climates – CO₂ heat pumps maintain high efficiency even in cold temperatures, ensuring consistent performance year-round.
  • Long-Term Cost Savings – With a lifespan of 15+ years and low maintenance requirements, these systems provide a great return on investment.
  • Future-Proof Technology – Many governments offer rebates for installing energy-efficient systems like CO₂ heat pumps, making them a smart choice for long-term sustainability.
What industries and sectors are suitable for CO₂ heat pump hot water systems?
CO₂ heat pump hot water systems are ideal for industries that require a reliable, energy-efficient, and sustainable hot water supply. Some of the key sectors that benefit from this technology include:
  • Hospitality & Accommodation – Hotels, resorts, and serviced apartments need large volumes of hot water for guest rooms, kitchens, and laundry facilities.
  • Healthcare & Aged Care – Hospitals and aged care facilities require consistent and hygienic hot water for patient care, cleaning, and sterilization.
  • Fitness & Recreation – Gyms, swimming pools, and sports centers benefit from high-temperature water for showers, spas, and pool heating.
  • Food & Beverage Processing – Breweries, dairies, and food production facilities rely on large-scale hot water for processing, cleaning, and sanitation.
  • Manufacturing & Industrial – Factories, textile plants, and pharmaceutical industries require reliable and efficient hot water for production processes.
  • Education & Public Facilities – Schools, universities, and government buildings can benefit from CO₂ heat pumps to meet high daily hot water demands while reducing energy costs.
Why is the Q-ton CO₂ heat pump better than electric or gas water heaters?
The Q-ton CO₂ heat pump outperforms traditional electric and gas water heaters in efficiency, sustainability, and cost savings. Unlike gas boilers, Q-ton co2 heat pump produces zero on-site emissions and operates with up to 76% lower CO₂ output. Compared to electric heaters, Q-ton co2 heat pump uses up to 60% less energy thanks to its advanced heat pump technology, which extracts heat from the air instead of relying solely on electricity. This results in lower operating costs, reduced carbon footprint, and compliance with sustainability targets, making it the superior choice for commercial hot water applications.
Why are CO₂ heat pump hot water systems better than electric or gas water heaters?
CO₂ heat pump hot water systems outperform traditional electric and gas water heaters in efficiency, sustainability, and cost savings. Unlike gas boilers, co2 heat pumps such as the Q-ton produces zero on-site emissions and operates with up to 76% fewer CO₂ emissions. Compared to electric heaters, Q-ton uses up to 60% less energy thanks to its advanced heat pump technology, which extracts heat from the air instead of relying solely on electricity. This results in lower operating costs, reduced carbon footprint, and compliance with sustainability targets, making it the superior choice for commercial hot water applications.
How can I install a CO₂ heat pump hot water system?
Installing a CO₂ heat pump system requires assessment by a professional to ensure compatibility with your existing hot water setup. To find out more about cost savings, system configurations, and installation options, you can fill out the form above to download the brochure and one of our team will be in touch.
Q-ton
Easy operation

Easy to use touchscreen control with advanced functions including user friendly scheduling options and one-touch fill up.

Environmentally Responsible

Produces 74% than an electric heater and 76% less emissions than a gas boiler.

High Efficiency

High coefficient of performance (4.3 in intermediate season) delivering massive reductions in both running costs and CO2 emissions.

High Performance

Delivers 60°C to 90°C water supply in -25°C ambient temperature. Ability to maintain 100% capacity down to -7°C.

Long Term Reliability

High quality, robust technology and components offering long life expectancy.

Modbus Compatibility

Ability to send messages via Modbus communication via the RCI-MDQE interface kit.

Space heating

Q-ton can be used in variety of space heating applications including underfloor heating and low temp radiators.

Space Saving Design

Much smaller footprint compared to gas boilers offers easier installation and design flexibility.

SELECT CONTROLLER TYPE FOR DETAILS:
RC-Q1EH

  • Easy to use, touch screen LCD screen
  • Large 3.8 inch full dot display
  • Backlight Function
  • Easy to use manual operation to manually fill water tank to suit demand
  • Variety of schedule options including weekly and daily timers and a peak-cut timer.

Request a Q-ton Brochure

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TECHNICAL SPECIFICATIONS
ABCD
1
ModelESA30EH2-25
2
Power source3 Phase 380V±5%, 400V±5%, 415V±5%, 50/60Hz
3
Operation to top up (Intermediate season)*1Heating capacitykW30
4
Water amountL/min8.97
5
Power consumptionkW6.98
6
COP-4.3
7
Operation to top up (cold season)*2Heating capacitykW30
8
Water amountL/min5.06
9
Power consumptionkW10.73
10
COP-2.8
11
Operating sound pressure
(In intermediate season)*1, 3
dB(A)58
12
Operating sound power (In intermediate season)*1dB(A)70
13
External dimensions (HXWXD)mm1690 x 1350 x 720 + 35 (water pipe connection)
14
CurrentMaximumA21
15
StartingA5
16
Unit weightkgOff: 375 During operation: 385
17
ColourSutcco white (4.2Y 7.5/1.1 Approx)
18
CompressorType x PcsHermetic inverter compressor x 1
19
Nominal outputkW6.4
20
RefrigerantTypeR744 (CO2)
21
Charged amountkg8.5
22
Refrigerant OilTypeMA68
23
Charged volumecc1200
24
Crackcase HeaterW20
25
Anti-freezing heaterFor water pipeW21 x 3
26
For drain panW40 x 2
27
For drain hoseW16 x 3
28
Heat exchanger, air-sideTypeCopper pipe straight fin type
29
Heat exchanger, water side (gas cooler)TypeCopper pipe coil, indirect heat exchanger
30
Possession quantity of water10
31
FanTypeAxial flow type (direct coupled motor) x 2
32
Output x pcsW386 x 2
33
Air volumem3/min260
34
External static pressurePa50
35
Water pumpType x outputNon-self-suction spiral type inverter pump × 95W
36
Materials contacting waterPPS
37
Actual pump headm (kPa)5m (49kPa) @ 17Litre/min
38
Usage temperature rangeOutdoor air temperature°C-25 to +43
39
Feed water inlet temperature
°CTop up 5-35, Warm up 35-63
40
Hot water outlet temperature
°C60 - 90
41
Water pressure rangekPa500 or lower (Keep water pressure more than 0kPa at the inlet of heat pump water heater)
42
DefrostHot gas type
43
Vibration and sound proofing devicesCompressor ;placed on anti-vibration rubber and wrapped with sound insulation
44
Protection devicesHigh pressure switch over current protection, power transistor overheat protection and anomalous high pressure protection
45
Pipe connectionFeed water inletRc3/4 (Copper 20A)*4
46
Hot water outletRc3/4 (Copper 20A)*4
47
Drain water outletRc3/4 (Copper 20A)*4
48
Design pressureMPaHigh pressure:14.0, Low pressure: 8.5
49
IP CodeIP24
50
1. Performance of operation to top up during intermediate season shows the capacity measured under the conditions that outdoor temp is 16°C DB/12°C WB, water inlet temp is 17°C and how water outlet temp is 65°C.
51
2. Performance of operation to top up in cold region shows the capacity measured under the conditions that outdoor air temperature is -7°C DB/-8°C WB, water inlet temperature is 5°C and hot water outlet temperature is 90°C excluding heater for anti-freezing water (191W).
52
3. Operating sound shows a value is measured at 1m in front of the unit and 1m above the floor in an echoic room where the sound is slightly resonated. Accordingly, if the unit is installed on an actual site, it is normal that the measured sound levels may be higher than the value shown above, due to surrounding noise and echo within the room.
53
4. Pipe size 20A=DN20=20mm=3/4in.
54
5. The actual hot water outlet temp may vary ±3°C from target temp according to the change of outdoor air temp and water inlet temp. If feed water inlet temp is 30°C of high and outdoor air temp is 25°C or higher the water temp may be controlled to ensure temp does not increase too much.
55
6. Ensure clean water is used. Water quality should follow the standard which MTH specifies. If the water quality if not up to standard it may cause issues within the unit such as scale build-up and/or corrosion.
56
7. These articles mentioned above may vary without notice accordingly to development status.
57
8. Electrical installation work must be performed by an electrical installation service provider qualified by a power provider of the country. Electrical installation work must be executed according to the technical standards and other regulations applicable to the electrical installations in the country.

Case Studies

ApartmentsEducationResidential
Melbourne University - Dookie Campus, VIC
Completed: March 2024
Products Used:
  • 1x Q-ton Hot Water Heat Pump
  • 4x SCM-ZS-W series
  • 4x DXK/ SRK Series
View Case Study
Health Care
Timaru Hospital, NZ
Completed: August 2023
Products Used:
  • 8x Q-ton Hot Water Heat Pump
View Case Study
Office SpacesRetail
Endeavour Consumer Health, NZ
Completed: August 2023
Products Used:
  • 1x Q-ton Hot Water Heat Pump
View Case Study

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