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Radiators For Use With Heat Pumps

Renewable technologies such as ground-source and air-to-water heat pumps along with solar are becoming the preferred energy source for many.


However these technologies will only heat water at a lower temperature (around 35-55℃) compared to your standard gas or diesel boiler (around 70-80℃), this is due to absorbing heat from natural environments such as the air, ground or sunlight.


This means to achieve the same heat output and comfort levels in each space you either require larger radiators to compensate for the lower water temperatures and loss of heat output or more efficient ones.

To put this into perspective, the same radiator running on a hydronic heat pump system with 50℃ flow temperatures will have an output less than half of that if it was running on a boiler system with 75℃ flow temperatures. 

To solve this problem we have a comprehensive range of radiators and convectors designed to run at low fow temperatures.

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Pairing Radiators With Renewable Technologies



The output problem due to low flow temperatures can be solved by increasing radiator sizes, by using underfloor heating or by using fan assisted Low-H₂O radiators and convectors.

While increasing traditional radiator sizes will work to a degree you will be left with a radiator twice the usual size which is very space consuming, not aesthetically pleasing and can not be used for cooling if you are planning on using a reversible heat pump.

Underfloor heating is a good solution, under the right circumstances, as flow temperatures are generally below 40℃. Unfortunately underfloor heating in New Zealand is rarely done correctly, usually being installed within the structural building slab, tied to the structural mesh itself. In doing this the thermal mass being heated becomes so massive the system becomes incredibly inefficient to run. 

The best solution to this problem is utilising Low-H₂O technology with fan driven assistance. This allows high outputs to be achieved, even at super low flow temperatures, without needing to increase radiator sizes.

For our Low-H₂O radiators this is achievable through the DBH(Dynamic Boost Hybrid) extension which can be added with new installations or in the future if you decide to swap from a boiler to a hydronic heat pump or our Briza range.


BRIZA 12 & 22

The ultimate heat pump companion.

To harness the full potential of renewable energies you must have a solution that can perform at high levels at very low water temperatures throughout the year.

The Briza 22.

A powerful hybrid that can provide efficient heating in the winter and refreshing cooling in the summer. 

With heating outputs of up to over 12.7KW with flow temperatures of 55/45℃ the Briza 22 is the ultimate partner for hydronic heat pumps in commercial installations.

The Briza 12.

The little brother of the Briza 22, the Briza 12 is the slimmest hybrid available with so much power.

With heating outputs of up to 5.3KW with flow temperatures at 55/45℃ the briza 12 is the ultimate partner for hydronic heat pumps and solar energy systems for residential and light commercial installations 



Jaga Hybrid heating units are equipped with the brand new DBH system, DB stands for Dynamic Boost, to considerably increase the power of the heater. The H of Hybrid stands for the dual effect: heating and cooling.

  • Perfectly controlled heating at the lowest water temperature thanks to the hybrid system's reaction speed.

  • By default, suitable for energy-efficient non-condensing cooling in combination with any heat pump.

  • Efficient and effortless heating with the lowest water temperature

  • Energy-efficient non-condensing cooling in combination with any heat pump that can supply cooling water

  • Improves the seasonal efficiency of each heat pump

  • Makes sure that the condensing boilers are operating at their lowest temperature and as efficiently as possible.