The contribution greener heating and hot water can make to net zero targets


According to the Energy Savings Trust, household emissions from heating and hot water must reduce by 95% to reach the 2050 net zero targets set by the UK Government as part of its worldwide obligations. To achieve this, the UK needs a home heating revolution in the next few years to achieve the necessary carbon emission savings.

We will need to replace the high carbon fossil fuels currently used to heat our buildings with low carbon fuels and technologies. This will require a significant change to the current UK heating market.

The majority of household CO2 emissions currently come from heating including generating hot water. Energy Catapult Analysis shows that in 2017, the average household generated 2,745 kg of CO2 emissions from heating, which is around 31% of the total. To reach the Net Zero 2050 target that the UK has now agreed to achieve, we need to reduce heating emissions to 138 kg CO2 per household. That’s a whopping reduction of 95%.

One thing is for sure. We cannot reduce carbon emissions from heating sufficiently if we continue to use natural gas or oil to heat our homes. This level of reduction requires a substantial shift in heating technologies towards renewable energy. Home renewable heat energy can come from a wide variety of sources: from solar water heating, or by extracting the latent heat in the soil, outside air or a nearby water source using a heat pump.

Clean electricity generation also plays an important part in the switch to renewable heat. At a national level electricity from the national grid is being rapidly decarbonised with a larger proportion being generated from onshore and offshore wind farms meaning that heat pumps which rely on electricity to run become an even greener choice. Of course homeowners with their own solar PV or wind generation systems can use the power to run direct electric heating or heat pumps using 100% clean electricity.

LG has been taking a lead in the move across from traditional heating and hot water provision to a renewable alternative, championing the installation of heat pumps which, along with an investment in quality insulation offers the prospect of warm comfortable homes wherever you live in the UK. The initial cost of the installation may be higher but the cost of ownership over a typical fifteen-year lifecycle will show huge savings with LG heat pumps offering a seasonal coefficient of performance (SCOP) of well over 4.0 – compared to a maximum efficiency of between 90 and 95% for the most efficient condensing boiler.

LG has been offering its popular Therma V air to water heat pumps in the UK for many years and has been developing the technology, until it now has a sector leading option that is

beginning to take the home building sector by storm. Its new Monobloc version is easy to understand, simple to install and hugely energy efficient. It utilises the low global warming potential (GWP) refrigerant R32, but as a monobloc requires no installer to handle refrigerant – it simply requires the installation of the external unit. The installation of a hot water tank indoors completes the package, with connections to radiators and or underfloor heating systems for heating and hot water.

The new LG R32 Monobloc unit is compact, meeting permitted planning permission guidelines, and has an energy rating label of A+++. It incorporates a new Scroll Type Compressor developed by LG. Unlike many heat pump manufacturers and new entrants to the heat pump sector, LG invests millions in R&D and offers sector leading compressor and controls technology others can only dream of.

LG units offer quicker response times for the provision of heating, by sensing not only the temperature but also pressure – a pressure control sensor provides a faster and more accurate response, reducing the time delay for implementing heating commands significantly. The addition of pressure control enables the Therma V R32 Monobloc to take less time to reach the desired temperatures.

Heat pumps offer by far the most sensible and proven way for us to make strides towards Net Zero right now. They use already proven technology being used extensively across European countries with colder climates than the UK. Monobloc air to water heat pumps can be easily installed by existing heating engineers with manufacturer training,

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