Hot Water Heat Pumps: Powerful, Efficient, and Tailored for Your New Zealand Business:
As businesses and industries continue their journey towards cleaner, more sustainable operations, hot water heat pumps emerge as a cutting-edge and eco-friendly heating solution. Designed to significantly reduce carbon emissions while delivering consistent and highly efficient heating, hot water heat pumps represent a smart investment for companies committed to environmental responsibility and long-term operational savings.
Our Hot Water Heat Pump Solutions
Tubman Heating offers a comprehensive range of high-quality hot water heat pumps, carefully selected to meet the diverse and demanding heating needs of New Zealand businesses. Our expert team possesses the capability to design, install, and maintain hot water heat pump systems specifically tailored to your unique requirements, ensuring optimal performance, unwavering reliability, and maximum energy efficiency.
Air-Water Heat Pumps
The Unical range of high-efficiency air-to-water heat pumps offers a versatile solution for sustainable space heating, cooling, and hot water production. Designed for both residential and professional environments, these systems utilise advanced inverter technology to deliver reliable performance across a wide range of external temperatures. With a focus on energy recovery and low carbon emissions, Unical heat pumps are a future-proof choice for New Zealand businesses looking to decarbonise.
UNICAL HP_OWER 260-320RK

- Power range: 26 kW – 32 kW
- Energy Class A++
C.O.P. up to 4.09
E.E.R. up to 4.71 - Possibility to configure in cascade up to 7 machines
UNICAL HP_OWER 500-700RK

- Power range: 50 kW-70 kW
- Energy class A ++
C.O.P. up to 4.11
E.E.R. up to 4.25 - Modularity up to 490 kW (possibility of cascading up to 7 machines)
UNICAL HP_OWER 1150N

- “Full inverter” Air-Water heat pump
- High efficiency, Energy Class A+
C.O.P. = 3.90
E.E.R. = 3.65 - Extraordinary 1:16 modulation ratio to optimize operating consumption
- Possibility to configure up to 7 machines in cascade

Hot Water Heat Pumps
Grat delivers high-performance air-to-water heat pump technology designed for reliable central hot water in both residential and commercial applications. Engineered to perform in extreme conditions, these systems provide stable hot water production with output temperatures up to 60°C, even in ambient temperatures as low as -30°C. They offer an eco-friendly, high-efficiency alternative to traditional water heaters, significantly reducing energy costs and carbon footprints.
Grat Commercial Heating & Cooling Heat Pump

- 32 Kw – 180 kW heating and cooling capacity / unit
- Up to 60°C hot water outlet temperature
- Simple installation with an integrated design
- Low noise operation
- Reduced operating costs due to high COP
Grat Commercial Heating Heat Pump

- Low temperature: Up to 60 degC
- 10 kW – 180 kW
- Medium temperature: Up to 90 degC
- 56 kW – 110 kW
Grat Swimming Pool Heat Pump Series

- 7 kW – 255 kW
- Specifically designed for commercial pools, including high-demand environments like school pools and public pools, as well as hydrotherapy and spa facilities.
- Reduced operating costs due to high COP
- Utilises renewable ambient energy
Utilising New Zealand’s Sustainable Energy Sources
New Zealand is a global leader in renewable electricity generation, with much of our power coming from sustainable sources like hydro, geothermal, and wind. This robust green energy infrastructure makes hot water heat pumps an increasingly attractive and environmentally responsible heating choice for businesses nationwide. By wisely using our abundant clean electricity, hot water heat pumps offer a direct path to dramatically lowering your carbon footprint.
Hot water heat pumps are advanced heating systems that efficiently transfer heat from one source (typically the ambient air, water, or ground) to another, usually your hot water system. Unlike traditional boilers that generate heat by burning fossil fuels, heat pumps utilise a refrigeration cycle. This cycle absorbs low-grade heat from the environment and concentrates it to a higher temperature, which is then used to heat water for various commercial and industrial applications, including space heating, process hot water, and domestic hot water supply.
- Exceptional Efficiency: Hot water heat pumps are renowned for their high energy efficiency, often delivering more heat energy than the electrical energy they consume. This superior performance translates directly into lower energy bills and reduced operating costs for your business.
- Reduced Carbon Emissions: By leveraging New Zealand’s predominantly renewable electricity supply, hot water heat pumps produce virtually no direct carbon emissions on-site, contributing significantly to a cleaner environment and assisting your business in achieving its sustainability targets.
- Cost Savings on Energy: While the initial investment for a hot water heat pump system may vary, their remarkable efficiency leads to substantial and ongoing long-term savings on energy consumption, providing an excellent return on investment.
- Low Maintenance Requirements: With fewer complex moving parts and no combustion processes, hot water heat pumps generally require less frequent and less intensive maintenance compared to traditional boiler systems, leading to reduced downtime and operating expenses.
- Enhanced Safety: By eliminating the need for on-site fuel storage and combustion, hot water heat pumps offer an inherently safer heating solution for your premises.
- Potential for Government Incentives: The New Zealand government, through organisations like EECA (Energy Efficiency and Conservation Authority), actively supports businesses transitioning to renewable energy solutions. Hot water heat pump installations may qualify for various incentives and funding programmes.
If your business is looking to significantly reduce its carbon footprint, optimise heating costs, and enhance its energy independence, hot water heat pumps are an outstanding solution – particularly within New Zealand’s context of high renewable electricity generation.
Hot water heat pump systems are highly versatile and can be effectively deployed across a wide range of commercial and industrial applications. This includes providing reliable, low-carbon hot water and space heating, as well as specialised pool heating solutions for large-scale public pools and school pools. However, it’s crucial to assess your specific heating requirements, existing infrastructure, and electricity supply to determine the optimal hot water heat pump system for your operations. Tubman Heating can provide expert advice and tailored solutions to precisely meet your business’s needs.
Tubman Heating provides robust, energy-efficient hot water heat pumps that are perfectly scaled for the consistent demands of school pools and public pools across New Zealand. We help facilities optimise energy use and reduce operating costs while maintaining comfortable, safe water temperatures year-round.
Contact Tubman Heating Today
Interested in exploring the benefits of installing a hot water heat pump system for your commercial or industrial business?
Contact Tubman Heating today to discuss your specific requirements and allow us to guide you in finding the ideal sustainable heating solution.
Our experienced team will support you through every step of the process, from selecting the most suitable heat pump to seamless installation and comprehensive ongoing maintenance support.
Request more information
Frequently Asked Questions (FAQ)
While hot water heat pumps offer numerous advantages, it’s important to consider the potential impact on electricity demand. Increased adoption of electric heating solutions may put additional strain on the electricity grid, particularly during peak consumption times. However, New Zealand’s ongoing investment in renewable energy infrastructure is actively working to mitigate this issue.
New Zealand’s strong reliance on renewable energy sources, such as hydro, geothermal, and wind power, means that using electric-powered hot water heat pumps for heating further leverages these sustainable resources. This strategic alignment helps to reduce the country’s overall reliance on fossil fuels and significantly lowers national carbon emissions.
Hot water heat pumps are highly adaptable and can be effectively utilised across a wide spectrum of commercial and industrial applications. Nevertheless, it is essential to conduct a thorough assessment of your specific heating requirements and existing electricity supply to accurately determine the feasibility and optimal design of a hot water heat pump system for your business. Tubman Heating is here to provide expert advice and design tailored solutions to meet your precise needs.
Tubman Heating offers a comprehensive suite of services for high-quality hot water heat pump systems, catering to the diverse heating needs of New Zealand businesses. Our skilled team is equipped to design, expertly install, and provide ongoing maintenance for your hot water heat pump system, ensuring optimal performance, long-term reliability, and maximum energy efficiency throughout its lifespan.