7GU5D4-1
A compact unit for a small home — underfloor heating plus domestic hot water.
Underfloor output5 kW
Hot water output4 kW
Power input1.4 kW
Power supplySingle phase
Water connections25 mm BSP
Size (L×W×H)890 × 355 × 1020 mm
Weight150 kg
DuoHeat underfloor + hot water · Auckland
One heat pump — floors and hot water
DuoHeat dual-purpose units
Made in New Zealand
The DuoHeat range runs your underfloor heating and your household hot water from a single unit — fewer machines, one install, one company to call. NZ-made Performance Plus, titanium inside.
2 in 1floors + hot water, one unit
NZ-madeengineered & built here
Titaniumheat exchanger
2 + 3 yrlabour & parts warranty
The range
From a small home to a large one
Choose the output for your floors and hot water; the ‘Ub’ versions add a buffer tank and circulation pump built in.
7GU18D15-3
18 kW to the floors, 15 kW to hot water, from one three-phase unit.
Underfloor output18 kW
Hot water output15 kW
Power input5.0 kW
Power supplyThree phase
Water connections25 mm BSP
Size (L×W×H)1450 × 500 × 1495 mm
Weight195 kg
7GUb18D15-3
The 18/15 kW unit with buffer tank and circulation pump built in.
Underfloor output18 kW
Hot water output15 kW
Power supplyThree phase
Water connections25 mm BSP
Buffer + pumpBuilt in
7GU24D18-3
24 kW to the floors, 18 kW to hot water — for larger homes.
Underfloor output24 kW
Hot water output18 kW
Power input6.0 kW
Power supplyThree phase
Water connections25 mm BSP
Size (L×W×H)1595 × 623 × 1195 mm
Weight210 kg
7GUb24D18-3
The 24/18 kW unit with buffer tank and circulation pump built in.
Underfloor output24 kW
Hot water output18 kW
Power supplyThree phase
Water connections25 mm BSP
Buffer + pumpBuilt in
Outputs are nominal ratings. We size the unit, buffer and cylinder to your home before we quote.
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Good to know
Questions about the units
Why aren’t the prices shown?
Because every job is different, we price each one individually. Tell us what you’re heating and we’ll send you a price — supplied, or supplied and installed.
Can one unit do the floors and all our hot water?
Yes — that’s the DuoHeat idea. Underfloor heating and stored hot water are both low-and-steady loads a single well-sized heat pump handles, with controls sharing it between them. It saves buying two units.
Do you install these, or just supply them?
Both. We can supply a unit to your own installer, or design and install the whole system ourselves and tie it into your floors, pool or hot water as needed.
What’s the difference between the ‘U’ and ‘Ub’ models?
The ‘Ub’ models have an onboard buffer tank and circulation pump built in, so there’s less to plumb and less plant-room space needed. The plain ‘U’ models leave the buffer and pump to be specified separately — handy when they’re shared with other equipment.
What warranty do they come with?
The Performance Plus range carries a two-year labour and three-year parts warranty covering the compressor, coil, heat exchanger and refrigeration system, and the titanium heat-exchanger tube is covered against corrosion for 30 years (10 years on the commercial models).