Heat Pumps

Most air to air models installed in New Zealand homes are split systems: a heat pump inside unit fixed to the wall or standing in the room, connected by refrigerant pipework to the outside heat pump on an exterior wall or at ground level. A wall mounted heat pump keeps the space beneath it free for furniture, and a floor mounted heat pump sits at skirting level, which suits rooms with low window sills or raked ceilings. The floor heat pump NZ installers fit in those rooms is the same indoor unit set low rather than high, and some manufacturers list a dedicated heat pump floor unit for the position. Choosing between a floor or wall mounted heat pump comes down to the layout of the room and where its air can move without obstruction.

As the name implies, air-source models transmit external heat to a building's interior. Most models are reversible and capable of both air heating and cooling, using vapour compression or hot water.

Also known as a ductless mini-split heat pump, this model is designed for use in buildings that have no ducts, mostly those formerly using radiators or various hot water heaters or radiators.

Some ducted systems use the exhaust from a building to maximise the effects of evaporation to the condensation method. In general, they are energy-efficient and more cost-effective in the long run than other systems. They are also considered healthy due to the fact that no burning and carbon emissions are involved in the process. 

These models work similarly to air-conditioners or refrigerators. The delivery unit is placed indoors and connected through pipes to the outdoor system. 

This unit uses water instead of a vaporised refrigerant. Heated water is then travelling through internal radiator systems.

This type of pump uses the advantages of more stable in-depth temperatures to operate more efficiently. Some models use a dual-line system, with two pipelines connected to the exchange box. One line runs between the source and the exchange box, while the other attaches it to the indoor unit. 

Designed to use the benefits of deep water sources proximity, water-based heat pumps employ them as a medium for heat exchange. Many versions also use refrigerant, turning water into gas and then back into the water again. Due to the relatively stable temperatures at the source, underwater heat pumps can be efficiently used in more extreme climates. 

Most conventional types face the challenge of efficiently providing necessary heat levels in very cold climates, often requiring costly support systems during extreme cold seasons. Hybrid heat pumps get around this using alternative power sources, such as gas-fired or solar-powered heat pumps. Gas-fired models use natural gas as their power source and can sometimes function as coolers, while solar-powered models harness sunlight directly or through solar panels to provide reliable heating.

The segment that turns gas into a liquid. 

Reverses the condensation process by turning liquid back to gas, making the material absorb heat from the surroundings.

Designed to control the flow of supplies injected into the evaporator.

Controls the amount of refrigerant flowing through the system.

The gas/liquid moving through the system.

Proper maintenance is essential for the optimal functioning of all heating pump systems, including regular cleaning of filters and fans, periodic cleaning of outdoor coils, and following manufacturer-recommended maintenance tasks. Additionally, clearing surrounding areas of debris helps ensure efficient operation. Professional services are also available for comprehensive semi-annual and annual maintenance checks.

The refrigeration cycle turns up elsewhere in the house as well. A heat pump clothes dryer, usually listed simply as a heat pump dryer, recirculates warm air through the laundry and condenses the moisture out rather than venting heated air outside, and heat pump hot water cylinders work on a similar principle. Each uses noticeably less energy than an ordinary resistance element doing the same job.

When buying a heat pump in New Zealand, consider the climate of your specific region, as different areas experience varying temperature ranges and weather conditions. Evaluate the energy efficiency rating to ensure lower operating costs and better performance. The size and layout of your home are crucial in determining the appropriate heat pump capacity needed for effective heating and cooling. Look for intelligent controls, quiet operation, and air purification to enhance comfort and convenience. Additionally, check the reputation and reliability of the brand and installer, and consider warranty and after-sales service for long-term support.

Sizing for heat pump house heating works differently from heating a single room: capacity is calculated from the building's heat loss, and each internal heat pump is matched to the space it serves. The heat pump power supply is worth confirming with your installer before any electrical work begins.

There are more than just heat pumps to consider for your heating and cooling solutions. For example, fireplaces are a heating method that dates back to ancient times. However, cooling is also an important element when improving your home. Installing high-quality fans will keep your place from feeling too warm. 

If you’d like assistance finding the right heat pump solution for your home, ArchiPro has the connections to help you find what you need.