ITS Heat Pumps
Domestic Heat Pump Product Manual
Page 6 of 14
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OPERATION PRINCIPLES
A heat pump works in the same manner as an air conditioner but in a reverse configuration.
That is, instead of removing heat from your home and expelling hot air outside it absorbs heat
from the air outside and uses this energy to heat water.
The modern domestic heat pump is a very efficient water heating device which uses a small
amount of electricity to drive a compressor which forms the heart of the heat pump. The heat
energy produced is as much as four times the electrical energy used to drive the compressor.
This means that your electricity consumption for water heating can be divided by four (i.e. 75%
saving).
The heat pump is not reliant on sunshine or direct radiation but can extracts thermal energy from
the surrounding air any time of the day or night. A heat pump therefore is a solar water heater
but in an indirect way. Even in extremely cold conditions (sub 0°C) the heat pump can still
provide a saving of more than 50%. In most cases in South Africa, where our daytime
temperatures are relatively high, the efficiency is going to be at least 3 times that of an element
heated water system. Even in the colder climates like northern Europe heat pumps are
extensively used in domestic applications.
ITS heat pumps look similar to an air conditioner and can also be wall mounted. It is quiet and
unobtrusive with a user friendly controller, has no greenhouse gas emissions and requires almost
no maintenance.
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ITS PATENTED INTEGRATION TECHNOLOGY
ITS have developed and patented an integration technique (ZA patent No 2011/04587) that
enables our heat pumps to be connected to any existing geyser. This technique utilizes a loading
valve and increases the hot water delivery capacity of the geyser. Most of the other integration
techniques commonly used will cause up to a 40% decrease in hot water delivery capacity of the
geyser. This is also one of the only installation techniques that requires no interference with the
existing geyser and therefore does not affect the guarantee of the existing geyser at all. Another
added bonus of this technique is that even if someone should completely empty the geyser there
will be hot water available again after only a few minutes –this is especially great for people who
enjoy a long hot bath and want to top up the heat from time to time.
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