Upgrade Your Hot Water System - Save on Power, Not Comfort
Efficient, reliable hot water for Dunedin homes with modern heat pump technology. Installed by your local experts at Lanark.
What is a Hot Water Heat Pump?
A hot water heat pump is an energy-efficient system that heats your water using heat drawn from the air rather than generating heat directly (like a traditional electric cylinder).
It works similarly to a reverse-cycle air conditioner — capturing ambient heat and transferring it into your hot water tank.
This process uses significantly less electricity whilst still delivering consistent hot water for your home.
The System We Install:
Rinnai HydraHeat Integrated
Lanark installs the Rinnai HydraHeat — a fully integrated hot water heat pump system designed for New Zealand conditions.
Why Are Homeowners Switching?
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Lower Running Costs
Hot water heat pump systems use significantly less electricity than standard electric cylinders because they move heat rather than generate it. For many households, this translates into noticeable reductions in monthly power bills — particularly over winter when usage tends to increase.
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Energy Efficiency
Instead of relying on high electrical input, hot water heat pump systems draw warmth from the surrounding air and transfer it into your water. This makes them more efficient than traditional systems, helping you get more hot water for every dollar spent on power.
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Consistent Hot Water for Everyday Use
Modern hot water heat pump systems are designed to handle the demands of daily household life — showers, laundry, dishes — without constant temperature fluctuations. With appropriate sizing and installation, you can expect a steady, reliable supply.
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Designed for Local Conditions
Dunedin’s cooler climate can put pressure on older or inefficient systems. Heat pump units like the HydraHeat are built to operate effectively even when temperatures drop, making them a practical option for southern homes.
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Quieter and Discreet
Modern units are designed to operate quietly in residential settings. When installed correctly, they integrate into your property without becoming a nuisance to you or your neighbours.
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Long-Term Value For Your Home
Although the upfront investment is higher than a basic cylinder replacement, the ongoing energy savings help offset this cost over time. For homeowners planning to stay put or thinking long-term, a Hydraheat installation is a considered upgrade that continues to deliver value.
Frequently Asked Questions
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Costs vary depending on your property and installation requirements. We will provide a personalised, no-obligation quote after assessing your current system.
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Savings depend on usage, but heat pump systems typically use significantly less electricity than standard electric cylinders.
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Yes. Systems like the Rinnai HydraHeat are designed to operate efficiently in cooler temperatures.
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Most installations can be completed within a day, depending on complexity.
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In most cases, yes — systems like the Rinnai HydraHeat Integrated replace your existing hot water cylinder.
If you’re specifically looking for a solution that works with an existing cylinder or offers more flexibility for certain setups, we can also supply and install the Rinnai HydraHeat Split Hot Water Heat Pump, which separates the heat pump from the tank.
Is a Hot Water Heat Pump Right For Your Home?
A hot water heat pump is a great fit for many Dunedin properties, particularly:
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If your current cylinder is ageing, inefficient, or struggling to keep up, this is often the ideal time to upgrade. Rather than a like-for-like replacement, a heat pump system gives you the opportunity to improve efficiency and reduce running costs at the same time.
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With electricity prices and winter demand in Dunedin, hot water can be a significant portion of your energy use. A heat pump system helps bring that down, making it a practical option for homeowners focused on ongoing savings rather than short-term fixes.
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These systems are installed outside, so you’ll need a practical location with enough room and airflow. Most homes can accommodate this without issue, and we’ll work with you to find a spot that suits both performance and appearance.
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If you’re already improving your home, it makes sense to consider your hot water system at the same time. Integrating a hot water heat pump during renovations can be more straightforward and ensures your system is set up properly from the outset.
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Systems like the Rinnai HydraHeat Integrated operate on mains pressure, so if your current setup is low pressure, this upgrade can noticeably improve your day-to-day experience. You’ll get stronger, more consistent flow at taps and showers — something many Dunedin homes benefit from when modernising their plumbing.
If you’re unsure, we can assess your setup and provide clear recommendations.
What to Expect When You Choose Lanark
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Call us or send through a quote request and we’ll get back to you promptly. We’ll ask a few practical questions about your current setup so we can understand what you’re working with before we step on site.
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We’ll come out to your property in person to look at your existing hot water system, available space, and how your household uses hot water day-to-day. This allows us to give advice that actually fits your home, not a generic recommendation.
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Based on what we see, we’ll confirm whether a HydraHeat system is the right option for you and explain why. You’ll get a clear outline of the scope of work, any constraints, and what the installation involves — without unnecessary jargon.
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Our team manages the full installation - including both plumbing and electrical work - so there’s no need to coordinate multiple trades. We complete the job to current standards and keep disruption to your home as minimal as possible.
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Once everything is installed, we’ll walk you through how the system works, what to expect, and how to get the most out of it. If you have questions down the track or need servicing, you’re dealing with a local team you can easily get hold of.
