HEAT PUMP GUIDE From the editor T


SPONSORED BY GHG boosts heat pump market


he Government’s annoucement of its Green Homes Grant (GHG) looks set to provide a major boost for the heat pump


market. That means there has never been a better time to explore what’s out there and what the benefits are. The GHG is a £2bn project to improve energy


efficiency of homes. Homeowners who apply for the grant will receive up to £5,000 to install a range of energy efficiency and low carbon


heating technologies such as heat pumps which deliver renewable heating to residential properties. The scheme has been introduced as part of the Government’s plan to rejuvenate the economy after the impact of COVID-19, while also taking steps towards its 2050 net zero carbon emissions goal. To offer some added guidance to heat pump installers, this supplement takes a look at the


ranges offered by some of the top firms in the UK. It covers everything from


product name, pump type, whether split or mono, output range, maximum SCOP, whether MCS accredited and size. In addition, the guide contains case studies for each company featured, highlighting the features and benefits in real life applications.


Heathe Ramsden, Edito Pump up the carbon savings


Heat pumps offer a rapid and scalable solution to the tough challenge of decarbonising heat, says Luke Bannar-Martin of Centrica Business Solution


T


he UK has made little progress in reducing the carbon intensity of heat, which accounts for around one third of CO2 emissions. Contrast


this with the power sector, where emissions have fallen sharply and renewables provide around 40% of supply. As rapid decarbonisation of the power grid


continues, switching to electric heat pumps provides a lower carbon alternative to conventional fossil- fuelled heating systems. Relative to a boiler burning natural gas, a heat


pump can reduce overall greenhouse gas emissions by as much as 80%. Heat pumps are classified as a form of renewable heat by the Government via the Renewable Heat Incentive (RHI), which provides a pence per kWh support payment for 20 years. The RHI has been extended until 31 March 2022


for certain schemes with a Tariff Guarantee, but new applications must be submitted by 31 March 2021. The Industrial Energy Transformation Fund is another funding opportunity, and applications to phase one close on 28 October 2020.


If powered by renewable electricity, heat pump emissions are zero. There are substantial cost and carbon emission savings from combining heat pumps with solar or combined heat and power.


How do heat pumps work?


Heat pumps extract natural warmth from the ground, air, water, or other source (even in winter) and use it for both space heating and hot water. This operates similar to an air conditioning unit running in reverse. This process will typically deliver between three and five units of heat for every one unit of electricity it uses. When configured to provide chilled water to supplement cooling, they can operate at a ratio of 5-9 units of heat /cooling per one unit of electricity.


Growing opportunity


The soon to be published UK Government heat white paper will provide urgent clarity on policy direction, but it is likely that electrified heat pumps will play a


major role in the transition to net zero. One of the key drivers is new build planning


regulation. The proposed update to SAP (SAP10.1), which is scheduled for late 2020, will reduce the carbon factor of electricity by 75%. Despite being a proven and mature technology, heat pumps currently only satisfy around 5% of global heat demand from buildings, but the market is growing rapidly. The International Energy Agency forecasts that, in the absence of a large build out of hydrogen infrastructure, over 50% of heating in Europe could be supplied by heat pumps in 2050.


Types of heat pump


Heat pumps can use a range of heat sources and operate through a wide range of temperatures from 40°C up to 130°C. They can be used in many applications and make use of any suitable heat sources that is available. Heat pumps can be categorised into four key types: air source; ground source; water source; and high temperature – for use in industry.


!" October 2020


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