How Does the Sanden "Eco®" Hot Water Heat Pump System Work?

The Sanden "Eco®" Hot Water Heat Pump System works in a different way compared to a conventional electric hot water system. The Sanden "Eco®" Hot Water Heat Pump System operates like a refrigerator in reverse. It contains a fan that forces air through an evaporator that contains a refrigerant. The heat in the air passes through the evaporator and is absorbed by a natural refrigerant, CO2 (R744), which is ozone friendly and does not contribute to global warming.

The warm gaseous refrigerant is circulated in the system via a compressor. As it passes through the compressor, its pressure rises, as does its temperature. This hot refrigerant then passes through a heat exchanger to heat the water, which is finally pumped to the storage tank.

View the Sanden Hot Water Heat Pump Product Brochure.

As the Sanden "Eco®" Hot Water Heat Pump System uses CO2 (R744) refrigerant technology, the amount of electrical energy required to heat the water is significantly less than that required by a conventional electric hot water system.

In fact, the Sanden "Eco®" Hot Water Heat Pump System consumes 1kW of electricity to generate 4.5 kW of heat (COP = 4.5*), which equates to 22% of the energy used by a conventional electric system. Consequently, with the Sanden "Eco" Hot Water Heat Pump System, you can save up to 78% of your conventional electric hot water energy costs!
Which hot water system should I choose?

Sanden has two hot water systems to choose from, model numbers GAUS–315EQTD and GAUS–315EQTE. The only difference between these is the physical size of the tank. The GAUS–315EQTE offers a tall, thin tank, while the GAUS–315EQTD offers a short, fat tank. Which one you choose depends on the space requirements of the location where you are installing it. Please speak to your Dealer/Installer about making the best choice for your location.


(Extracted from Sanden "Eco®" Hot Water Heat Pump catalogue)

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