Top Hot Water Heat Pump Solutions for Energy Efficiency in Your Home

Your Local Expert Installers of Heat Pump Technology

On Time Aircon is an approved supplier and installer of a wide range of heat pumps including hot water heat pumps or hot water heaters. We have conducted numerous heat pump installations throughout the Wellington region and are trusted to undertake ongoing heat pump maintenance for many more.

What are Hot Water Heat-Pumps?

Hot water heat pumps, also known as heat pump hot water heaters, use the same heat pump technology that you find in normal residential heat pumps. They rely on the same principle of extracting heat from your home's surrounding air. Many households choose them since they are highly energy efficient and a great way to lower your energy bill.

How Hot Water Heat-Pumps Work

So, in the same heatpump technology that a normal air to air heatpump uses. A vapor compression cycle with a refrigerant fluid is warmed from the outside ambient temperature of the air around your residence and then this is pumped through to a hot water cylinder.

This process is continuously repeated till the required hot water temperature is met. Even in colder climates, in fact as low as -15 degrees, the heat pump can work effectively. The hot water cylinder may also have an additional electrical heating element to provide additional heat when required. When not heating water, the power is switched off to the outdoor unit, lowering standby power usage and increasing efficiency.

The system can be further optimized by choosing the times of the day that it can operate. The higher the ambient temperature, the more efficient the system operates. Colder water at the input side also increases the efficiency.

Types of Domestic Hot Water Heat-Pumps

There two main types of air-source hot water heat pump; split systems and monobloc systems. The choice of which system is best for you is normally dictated by your home's installation requirements. In general, split systems are the most prevalent system and the most appropriate for the majority of households. Monobloc systems however can be a consideration for particularly larger homes, though normally they are the preserve of commercial buildings.

What Energy Efficiency and Savings can you expect

As already mentioned, heat pump technology is a highly energy efficient and cost-effective way of heating your home compared to more traditional water heating solutions like gas powered boilers or electric water heaters. Typically, the coefficient of performance (COP) of a heat pump is around 3-5. Compare this against a gas water boiler which is normally around 0.7-0.9. In fact, when compared with conventional hot water heating systems they can between 60-75% less electricity. Of course, over and above the savings in water heating costs and energy consumption reduction you’ll be making, you will be helping to reduce carbon emissions and helping contribute to a more sustainable greener future.

Choosing the Right Hot Water Heat Pump for Your Home

As highly experienced installers of heat pumps, we are more than happy to advise prospective buyers with a free heat pump survey to determine what will be the best solution for you.

As part of the survey we:

consider your hot water volume needed by your household
space in the property
budgetary considerations
determine the most efficient heat pumps to meet these needs
evaluate how the heat pump can work within your existing plumbing system
go through the installation process with you in detail
explain on-going maintenance and servicing plans

Call us today for help with choosing a Heat Pump that best suits you.

Speak To Our HVAC Specialists

Hot Water Heat Pump FAQs

Is heat pump hot water worth it?

Yes, a hot water heat pump is worth it in Wellington, especially if you’re looking for an energy-savings and environmentally friendly way to heat water. Heat pumps use 70% less electricity compared to traditional electric water heaters and they deliver 3-5 times more heat energy than the electricity they consume. Cost savings: despite a higher upfront cost, you can save significantly on your power bills in the long term (one of our customers is now saving $12 a day since their installation). Hot water heat pumps typically last 10-15 years or more with minimum maintenance.

What is the disadvantage of a heat pump water heater?

While hot water heat pumps are an excellent choice for energy efficiency and environmental sustainability, their higher initial cost, potential noise, and reduced efficiency in extremely cold climates should be considered against your household budget and needs.

Are heat pump water heaters worth it in NZ?

Yes, hot water heat pumps are worth it in New Zealand for many households, particularly those looking for energy savings and efficiency as they use 70% less energy, cost-effective longer term on power bills, especially for households with high hot water usage and environmentally friendly water heating solutions. Ideal for New Zealand climate aligning with our focus on sustainability and reducing greenhouse gas emissions with some areas in New Zealand offering subsidies or rebates for energy-efficient systems, making the initial investment even more affordable.

How much is a hot water heat pump in NZ?

The cost of a hot water heat pump in New Zealand typically ranges between $5,000-$10,000 including supply and installation. However, there are several factors such as the brand, model, installation complexity and the size of the system needed for your household. The unit itself usually costs $2,500 to $5,000 depending on the brand and capacity.

Installation can add $1,500 to $3,000 depending on several factors i.e. whether it’s a new system or to retrofit, complexity of plumbing or electrical work, site specific factors such as space and access. Additional costs on top of this could include Hot Water Cylinder and potential upgrades to electrical systems. While the upfront cost is higher than traditional electric or gas water heaters, hot water heat pumps can save $300-$700 per year in energy costs meaning the investment pays off in 3-6 years. An onsite assessment and quote would give you the correct price as every household is different.

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