Efficient, reliable hot water is essential in every home. A hot water heat pump is one of the most effective ways to lower energy use while maintaining strong mains-pressure performance. Isaac’s Pumping, Plumbing and Electrical installs trusted hot water heat pump systems across Hawke’s Bay. Our in-house plumbers and electricians manage the entire process so your installation is completed safely and correctly.
Call nowA hot water heat pump draws heat from the surrounding air and transfers it into your water cylinder. Because it uses far less electricity than a standard element, it can reduce running costs while providing a steady supply of hot water throughout the day. The insulated cylinder helps hold this heat efficiently, supporting reliable year-round performance.
Hot water heat pumps are efficient, cost effective and designed to support consistent household demand. They can lower your power bill and, if you already have solar, they can further reduce how much electricity you draw from the grid. Many New Zealand banks also offer low interest or no interest home loan top ups that include hot water heat pumps.
For more information about funding options, see our blog page.
Learn moreHot water heat pumps suit many Hawke’s Bay homes. They are a good fit if you:
Every home is different. We match the system to your usage and complete all work with our in-house team for a smooth, coordinated installation.
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We check your hot water usage, capacity requirements and the best placement for the unit.
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We recommend the correct size and model to suit your household so the system performs well.
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Our licensed plumbers and certified electricians complete the installation to industry standards. With all trades in-house, the process is managed by one team from start to finish.
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We commission the system, confirm correct operation and talk you through how to use it.

The Rinnai HydraHeat™ is built for New Zealand conditions and delivers efficient mains-pressure hot water throughout the year. It uses proven heat pump technology to reduce running costs by up to 75 percent and includes a durable, insulated cylinder for consistent performance. It suits most homes and can work alongside solar.
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Installed by licensed plumbers and certified electricians

All trades in-house for a coordinated, streamlined process

Local experience across a wide range of Hawke’s Bay homes

Clear communication and a single point of contact

Trusted specification to ensure your system suits your home
If you are considering a hot water heat pump installation in Hawke’s Bay, our team can assess your home, provide a detailed quote and recommend the right system for your needs.
"Isaacs have lots of staff with different experiences meaning they are able to service all nature of issues we face in our homes and business. Huge commitment to rebuild post cyclone even when facing a rebuild of their own."
Joe Moffett / Moffett Orchards
"Isaacs’s have been supporting our business for the last 9 years. Tumu Timbers are a high volume manufacturing based business that requires minimisation of downtime and a high level of electrical support to ensure smooth operations. Isaacs offer a range of design and project management experience and they are always proactive in working with us to implement best value solutions with an emphasis on quality and safety.”
James Truman / General Manager - Tumu Timbers Ltd