New Zealand's Specialist Hot Water Heat Pump Installer
Serving Wellington, Hutt Valley, Wairarapa, Kapiti, Horowhenua & Manawatu
Serving Wellington, Hutt Valley, Wairarapa, Kapiti, Horowhenua & Manawatu
Upgrade your old unit to a modern hot water heat pump. Acting like a "reverse fridge," these systems harvest renewable energy from the surrounding air to provide sanitary hot water at a fraction of the cost.
Unlike traditional cylinders that generate heat directly (which is expensive), a heat pump simply moves heat. This process is incredibly efficient, often using 70% less electricity than standard cylinders. If you are looking for a significant electric water heater upgrade, this technology is the most effective way to slash your power bills and future-proof your home.
an integrated system is likely the best choice.
a split system may be the better fit.
Upgrade your existing cylinder with a high-efficiency hot water heat pump system - without full replacement.
When comparing models, you will see the term COP (Coefficient of Performance). This is the gold standard for measuring efficiency.
Put simply, COP measures how much heat you get for the electricity you pay for.
Why does this matter? A higher COP means significantly lower energy bills and less strain on the electricity grid. At A2W, we ensure our systems are optimised for Wellington’s climate, ensuring high performance even when the outdoor temperature drops.
Efficiency isn't just about electricity; it's also about the refrigerant inside the unit. New Zealand is actively phasing out older, high-GWP refrigerants like R134a in favour of eco-friendly alternatives.
At A2W, we prioritise systems using R290 (Propane) or CO₂ (Carbon Dioxide).
We are proud to be the region's specialist installers. We can design a comprehensive retrofit hot water system for your existing home, or provide expert installation for new builds in:
Yes. Modern hot water heat pumps are designed to operate in temperatures as low as -10°C. Even during a frosty Wellington morning, the system extracts heat from the ambient air to heat your water. For coastal homes, we select units with anti-corrosive coatings to withstand salt spray and prevailing winds.
Most units produce a soft hum similar to a standard background air conditioner. During our site assessment, we recommend strategic placement away from bedroom windows and boundary fences to ensure it blends into regular household sounds without disturbing you or your neighbours.
It depends on the system type. A "Split System" allows you to keep the tank in your existing indoor cupboard while placing the compressor outside. Alternatively, "All-in-One" systems are installed entirely outdoors, which frees up valuable internal storage space where your old cylinder used to sit.
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