Air source heat pumps eliminate the need for a fossil fuel heating system and are highly efficient

Daikin Airconditioning UK

Why choose a heat pump solution?

When you think of the phrase “air conditioning”, cooling a hot building perhaps springs to mind. The reality is that a heat pump can both heat and cool avoiding the need for two separate systems. Heat pumps work extremely efficiently because they transfer heat, rather than burning fuel to create it.

Current technology can make major cost savings, delivering up to four times the energy efficiency of traditional fossil fuel systems. Heat pumps are also available in “heating only mode”.

How do heat pumps work?

Heat pumps work like a refrigerator in reverse. Typically, refrigerant in the heat exchanger absorbs heat from the outside air and evaporates. Vapour is compressed, thereby increasing pressure and vapour temperature. Hot vapour is condensed in the second heat exchanger where heat is rejected, feeding into the central heating and hot water system. The liquid refrigerant passes back through an expansion valve and the cycle starts again.

Best of both worlds?

Many buildings throughout London and the South East – indeed the whole of the UK – already operate very efficiently with reverse cycle heat pumps providing both heating and cooling requirements.

Renewable Energy Heat pumps are recognised as a renewable heat technology by European Union and the UK Renewable Energy Strategy. As such, these systems allow opportunities for grant and tax advantages to be claimed

Inverter Air Conditioning

Inverter air conditioning involves a greater initial outlay compared with non-inverter air conditioning but has several benefits – not least in terms of ongoing energy savings – and is particularly worth considering if you use your air conditioning all year round (providing you with a comfortable working environment whatever the weather outside).

The amount of cooling or heating required by an air conditioning unit varies according to the outdoor temperature and the amount of heat in the room. Fixed speed air conditioning delivers a fixed amount of power via a fixed speed motor. An inverter air conditioning systems varies the speeds of the compressor, delivering precise cooling or heating power as required. Air Conditioning manufacturers claim savings of at least 30% – 50% compared with a non-inverter air conditioning system.

Ground Source Heat Pumps

For completeness, reference should be made to Ground Source Heat Pumps, a type of installation most readily found in new-build commercial environments in view of the large amount of earthworks and “footprint” required.

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