Air to Water Heat Pumps

Did you know there are grants of up to €3,500 available for Air to Water Heat Pumps?

As of 2018 there are a series of new grants up to the value of €3,500 available to homeowners installing Air to Water Heat Pumps. Contact us for more details or click here to find out more information on the grants section of the SEAI website.

Horgan Renewables are authorised suppliers and installers of Mitsubishi Electric’s award winning Ecodan range of air to water heat pumps. Ecodan pumps use advanced technology to heat homes and hot water by using energy absorbed from the outdoor air.

The pumps are manufactured to suit the Irish climate harnessing renewable energy to deliver efficient, renewable heating for your home whatever the weather.

Essentially it’s energy that you can use to heat your home generated from “fresh air”!

Are you based in Limerick, Kerry, Cork, Clare or Tipperary and interested in an Air to Water Heat Pump for your home? Then call Horgan Renewables to discuss the options available and get a quote on 069 62795. 

How do Heat Pumps work?

Heat pumps use electrical energy and take low grade heat energy from the outdoor air, to heat refrigerant which in turn heats water for domestic use and space heating. The efficiency of a heat pump is known as the Coefficient of Performance or CoP. This is a ratio of the heat delivered to power consumed. The operation of a heat pump is similar to a refrigerator – but in reverse. This process is known as the vapour compression cycle.

vapour_compression_cycle

At the beginning of the first phase the refrigerant is a cold low pressure liquid.

1. The refrigerant passes into the evaporator and heat energy from the outside air passes over the evaporator causing the refrigerant to increase in pressure and change to a warm vapour.

2. This warm vapour then enters the compressor where its temperature increases as a result of the compression process and turns into a hot gas.

3. The hot refrigerant gas is then condensed as it passes across one side of a plate heat exchanger. The heat is transferred to the cooler side (water side) of the heat exchanger, and this is transferred via the primary water circuit to heat up the water tank inside the property. As the temperature of the refrigerant decreases the state changes from a gas back to a cool vapour.

4. Despite dropping in temperature, the cool vapour still has a high pressure and to reduce this pressure the vapour passes through an expansion valve. This causes the pressure to drop and the temperature lowers, returning the refrigerant to its initial state of cool low pressure liquid.

This process is repeated It is only the refrigerant that passes through this cycle; the water is heated as it travels through the plate heat exchanger. The heat energy from the refrigerant passes through the plate heat exchanger to the cooler water which increases in temperature. This heated water enters the home heating circuit and can also be used to provide domestic hot water via a hot water cylinder.

To learn more about the Ecodan Heat Pump range download the brochure.

Check out the video below from Home Energy Scotland which explains how air source heat pumps operate: