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Heat Pumps

Benefits of Heat Pumps

  • Heat pumps offer unbeatable energy efficiency
  • Heat pumps are healthy, safe, clean and green
  • Heat pumps are easy to use and exceptionally convenient
  • Heat pumps are a year-round, value for money appliance


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How Heat Pumps Work

A Heat Pump is a reverse cycle Air Conditioner, which means the system both heats and cools.

Heat pumps work in much the same way as a refrigerator.  Two coils (one inside and one outside) circulate a refrigerant that draws warmth from the outside air and transfers it into your home.  Nothing is actually heated, there are no glowing elements and the process is very efficient.  The heat-transfer fluid used boils at -40 degrees Celsius, so even on the coldest winter’s day heat is absorbed and transferred indoors.

In summer, at the push of a button on the remote control, a valve simply reverses the flow of refrigerant so that the heat gained by the indoor coil is transferred outside, keeping the inside of your home or office refreshingly cool.  In addition to being cooled, the air is also dehumidified when moisture in the air condenses on the cold coil.  This condensate is caught in a drip tray and drained away

Inverter Technology

An inverter-based system continually adjusts it’s cooling and heating output in accordance with the temperature in the room. When the desired temperature is reached, inverter technology ensures it is constantly maintained – keeping comfortable at the same time running efficiently.

The Different Types

Heat pumps/air conditioners are split systems, most commonly consisting of an outdoor unit connected by copper piping and wiring to an indoor unit, which is installed in the area requiring heating and cooling.  The outdoor unit, which is usually installed at ground level, but can be installed at height also, houses the compressor which extracts heat from the air.  The indoor unit houses the fan assembly that circulates warm cool air around the area as required.  There are many different types of indoor air handlers and configurations.  The most commonly installed in New Zealand are as follows:

High Wall Split Systems

These indoor units are placed high on the wall in the area requiring heating and cooling.




Multi-systems comprise of a single outdoor unit coupled to multiple indoor air handlers, connected by piping and wiring. The indoor air handlers can be high wall or floor mounted style, ducted or bulkhead. These systems are ideal for office or homes which require either heating or cooling in each individual area. Multi Systems are also useful if there is only limited space outside of the outdoor unit or to reduce the number required.


Floor Standing Split Systems

These split systems are installed either at floor level or mounted just above the floor or skirting board.  Some floor standing units can be recessed into a wall or fireplace.


Ducted Systems

The indoor unit of a ducted system is installed in either the roof space or under the floor or in a basement.  Air is then distributed throughout the house by insulated ducts connected to grilles and diffusers mounted either in the ceiling or floor.  Each ducted system needs to be specifically designed for its particular situation, correctly installed and balanced, which our engineers are qualified to do.

Cassette Systems

The indoor unit of a Cassette system is suspended in the ceiling space of the area requiring heating and cooling.  All that is exposed of this section of the installation will be the fascia panel, which encloses the return air grille and four-way adjustable diffusers mounted flush to the underside of the ceiling.



Bulkhead Ducted System

A small ducted type of unit, hidden in a bulkhead behind a custom-made supply grill on the front and a return grill fitted underneath, effectively a hidden version of a high wall split system.




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