You will probably have heard that an Air Source Heat Pump is merely the reverse of a fridge. In essence, this is correct.

Heat Pump works because of a principal called Boyles Law.  This law covers the relationship between temperature, volume and pressure. Basically, any gas when compressed produces heat.  Our Daikin Heat Pumps contain a refrigerant which has a very low boiling point. So when the ambient air is drawn through the outdoor unit and passed over the refrigerant coil the liquid refrigerant starts to boil or, in other words, turns the liquid refrigerant to a gas. This gas is compressed in the compressor creating considerably more heat.  

There are four processes involved in the working of the Heat Pump, Evaporation, Compression, Condensation & Expansion

Evaporation – In a heat exchanger, the liquid refrigerant absorbs energy from the ambient air drawn into the unit by the fan. The refrigerant then evaporates as it’s temperature rises.

Compression – In a compressor the introduction of electrical energy causes the vaporised but still cool refrigerant to compress and heat up. The refrigerant leaves the compressor as a hot gas. Boyles law in action.

Condensation – The hot gas flows into the heat exchanger, releases energy to the heating system, condenses and leaves the condenser as hot liquid refrigerant.  This energy heats the hot water for domestic use to the desired temperature.

Expansion – The hot liquid refrigerant is transferred to the expansion valve where the pressure is reduced very rapidly.  The temperature of the coolant also drops very quickly without releasing energy. The cold liquid refrigerant is transferred to the evaporator and the cycle begins again.

In essence, the Heat Pump allows us to harness that free energy available in the air and use it to heat your home and domestic hot water. Because so little electrical energy is needed to run the system this means that 75% of your heating is coming free from the air. As a result of this Daikin air to water heat pumps can offer efficiencies up to 5 times higher than a fossil fuel boiler.  

At Keltic Renewables we are working with the biggest selling heat pump manufacturer in Europe, Daikin.

Daikin are a world leader in Heating Ventilation and Air-Conditioning. They are a core manufacturer and have set the standard on many innovative products that other manufactures try to emulate.

Daikin’s world headquarters are in Osaka, Japan where they have a highly regarded reputation for quality, efficiency and environmental awareness. Their pedigree is refrigerants which they manufacture themselves.

Daikin’s history dates back to the 1920s when they started manufacturing radiator tubings. From there they saw the potentials of refrigerants and produced their first refrigerator in the 1930s. Daikin produced Japan’s first packaged air conditioning unit in the 1950s with their first packaged heat pump for domestic applications produced in 1958. Since these beginnings they have established themselves as the largest HVAC company in the world with manufacturing facilities across the world.

Daikin’s headquarters in Oostende in Belgium started manufacturing in 1973. They now design and manufacture their products for Europe in their facilities in Belgium, Germany, Czech Republic, Italy and England.

Yes it can be but bare in mind that in night time the heat pumps efficiency will reduce as the outside air will be cooler.  If a dual tariff meter is installed other utilities should be managed such as washing machines, dishwashers etc. to maximise the benefit.

Generally the internal controls will automate the runtime of the heat pump. As the individual rooms require heat the heat pump will respond accordingly. It is worth noting the heat pump is rarely at 100% output. This is because the system when enabled will calculate what the optimum output will be required based on outside temperature (weather compensation) and flow and return temperatures.

Yes you can but we would suggest leave it in standby. This way if there is a sudden prolonged drop in temperature the system will respond even though in standby to prevent freezing etc.

In short it does not. The system will decide whether to produce heat for heating or hot water. If it is in hot water mode it will bring the tank up to desired temperature in quickest time possible without considering external weather conditions.

The majority of the systems energy will be used for heating. To maximise the efficiency in this mode, weather compensation means the unit will change its flow temperature setpoint depending on outside temperature. Most modern houses do not require a high temperature and if the circulation system is designed properly we will be producing maximum 35 degrees C for underfloor heating  and 45 degrees C for low temperature radiators.

In hot water mode we want to store the water in the cylinder at a higher temperature and the system will use all its energy to do the same.

In other words the two modes are controlled seperatley.

The majority of the systems energy will be used for heating. To maximise the efficiency in this mode, weather compensation means the unit will change its flow temperature setpoint depending on outside temperature. Most modern houses do not require a high temperature and if the circulation system is designed properly we will be producing maximum 35 degrees C for underfloor heating  and 45 degrees C for low temperature radiators.

In hot water mode we want to store the water in the cylinder at a higher temperature and the system will use all its energy to do the same.

In other words the two modes are controlled seperatley.

It would be recommended that living rooms would be set at 21, hallways at 19 and bedrooms at 18. However because we provide controls to each main room these can be altered to suit what you are comfortable with.