Heat Pumps

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UK:  Mitsubishi Electric has announced that its entire range of Ecodan air source heat pumps has achieved A++ rating under the first Energy Related Products (ErP) Directive ruling for heating products across Europe.

From the 26th September, ErP will apply to domestic and commercial heating and hot water products, including electrical powered heating, gas and oil boilers, water heaters and cylinders, as well as renewable technologies such as solar thermal and heat pumps.

This means that all space and water heaters will need to display an energy label which will help both residential and commercial customers identify the most energy-efficient products on the market and brings heating products into line with other energy consuming goods such as fridges and washing machines.

To highlight the requirements under ErP Mitsubishi Electric has also released a short video which explains how the Directive is designed to help phase out lower performing products whilst having a positive impact on the emissions levels across Europe and increase the share of renewable energies by 20 per cent.

ErP is a significant piece of legislation that will have a major impact on the sale and use of heating systems in the UK.  As such, the requirements of ErP is already being embedded into legislation on the energy efficiency of buildings and as incentive schemes for renewable technologies.

In order to apply for Renewable Heat Incentive (RHI) payments, heating systems will now needs to comply with the Microgeneration Certification Scheme (MCS), which sets industry standards for products used to produce heat from renewable sources.

For further information on the entire range of Ecodan A++ heat pumps visit‚Äč


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UK:  Mitsubushi Electric have released a new brochure to highlight the benefits of using a renewable Ecodan air source heat pump in a hybrid situation, alongside an existing oil, gas or LPG boiler.

The brochure provides details on how hybrid systems can qualify for the Renewable Heat Incentive (RHI) and includes information on typical set ups and real-life case studies.

“Adding an Ecodan to an existing traditional heating system enables homeowners to maximise energy efficiency, comfort levels and reliability”, explains John Kellett, General Manager for the company’s Heating Systems Division. “It offers them the best of both worlds to provide total peace of mind”.

A hybrid or bivalent system allows the heat pump to deliver the majority of the heating efficiently throughout the year, and call on the traditional boiler to provide the peak output if outdoor conditions fall below a point where heating in this way becomes more cost effective. 

The Department of Energy & Climate Change (DECC) predicts that by 2030 approximately 26% of the UK’s heating energy output will be met by air source heat pumps alone, and as much as 56% will be met by hybrid systems.

Mitsubishi Electric has developed the Ecodan range to operate as a hybrid system, allowing homeowners to upgrade their traditional heating system by installing and running a heat pump alongside it.

The advanced control system inherent in all new Ecodan systems carefully controls which system to operate to maximise efficiency at any time of the year.  Including a heat meter will also enable Ofgem to know exactly how much heat is being produced by the renewable heat pump to help with RHI calculations.

“Interest in renewable heating continues to grow as the price of oil and gas keeps on rising, so adding Ecodan as a hybrid solution can make a lot of sense, especially when you factor in seven years of regular RHI payments”, adds Kellett.

To download the brochure, click here. 

Mitsubishi Electric have also developed an Ecodan Selection Tool mobile app that allows you to calculate saving on energy bills when installing ground or water source heat pumps - what the Renewable Heat Incentive (RHI) will mean for the homeowner and the capital equipment pay back period - To download the Ecodan App - click here. 

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The Energy & Environment Expo took place this week and Fridgehub took a trip down to see what it was all about and get the latest scoop on the RHI.

DECC had been running Q&A sessions over the course of the expo to answer any questions about the RHI as well as taking visitors through the application process. But for those of you that weren't able to make it, here are some of the latest developments:

£2.6m has already been issued to households for the new Green Deal Home Improvement Fund in the first week and 1,736 applications were made for the fund, which offers households in England and Wales up to £7600 cash back for making energy efficient home improvements.

Under the new incentive scheme domestic energy customers can get:

·       Up to £1000 for installing two approved Green Deal energy-saving technologies; and/or

·       Up to £6000 for installing solid wall insulation; and

·       Up to £100 refund for your Green Deal Assessment

The scheme also entitles those who have purchased a property in the 12 months, prior to application, to qualify for (up to) an additional £500 if they carry out energy efficiency improvements.

So far the biggest uptake has been Air Source Heat Pumps accounting for 39% of the RHI accreditations, whilst Ground Source Heat Pumps account for 10%.

However with GSHP consistently out-performing air source models, this figure looks set to increase in the next few months. Ground source heat pumps offer a domestic tariff of 18.8 pence per kWh of renewable heat produced compared to air source heat pumps which offer a 7.3 pence per kWh equivalent.

Some other interesting facts:

  • DECC have helped drive down the cost of solar energy installations, now available for under £5k and with finance support available under the Green Deal
  • The £100 for the assessment is paid back after installation of approved energy efficient technology through The Green Deal
  • Today's latest Green Deal figures show the second highest number of sign-ups to the Green Deal assessments since it began.
  • Anyone using Bio-Mass should not stock pile pellets as criteria is set to change in the next couple of months, so keep an eye out for the new list of approved providers.

If you’re thinking of installing a ground or air-source heat pump in your home, Click here for pointers for you to consider beforehand.

For more information about the RHI and its Tariff's Click here

The UK heat pump market is currently relatively small in comparison to the dominance of gas boilers, and with this situation not being compatible with the Government’s carbon reduction targets.

The Heat Strategy has identified heat pumps as a key technology to drive the decarbonisation of the heat sector in combination with the decarbonisation of the electricity grid.

Driven by the Renewable Heat Incentive (RHI), the deployment of heat pumps is projected to grow significantly.

Refrigerants are a fundamental element of a heat pump installation as they are the working fluid which carries the energy from the heat source to the heat emitters.

The most common fluids used in heat pumps are Hydro fluorocarbons (HFCs) which typically have a global warming potential over 1000 times that of CO2.

If the large scale deployment of heat pumps comes to fruition, the energy performance and displacement of existing fossil fuel heating technologies will have a significant impact on the ability of heat pumps to contribute to carbon reduction targets.

As a result, the GHG emissions associated with refrigerant use will be increasingly important as deployment of heat pumps grows. At this time there is still little quantitative analysis available on leakage rates of refrigerants over the lifetime of a heat pump, yet the potential carbon benefits of heat pumps are likely to be very sensitive to leakage rates.

The study, carried out by Eunomia Research & Consulting Ltd and the Centre for Air Conditioning and Refrigeration Research (London Southbank University) was aiming to provide a more evidence-based assessment of likely leakage rates for various heat pump installations over time.

Driven primarily by the EU F-Gas Regulations, along with industry trends, it was also important to try to estimate the likely trends in refrigerant use, particularly with regard to Global Warming Potential (GWP).

At the same time, it is critical to present these impacts in the context of the benefits derived from heat pumps. The study therefore aims to model deployment of heat pumps and leakage of refrigerant according to a range of scenarios to present overall carbon dioxide equivalent (CO2e) net benefits or costs to both 2020 and 2050.


This report addresses the net benefit of heat pumps in the UK, taking into account the environmental costs associated with refrigerant leakage. The primary research and modelling indicated that whilst leakage led to significant CO2e emissions, this was nonetheless a small proportion of the total reduced emissions associated with heat pump technologies. It also highlights that there is scope to reduce leakage further, thereby increasing the net benefit associated with heat pumps.

The approach undertaken for this study includes a mix of primary research and practical testing exercises designed to provide the most accurate picture of refrigerant leakage and net CO2e benefits over time.

Key findings from the study can be found here.

According to a new 500 page report, Industry experts forecast a 10.6% compound annual growth rate (CAGR) in the global heat pump market for 2014-2020.

There were an estimated 58.3 million units sold in 2013 and projected to reach 116.9 million units by 2020.

In terms of value, global demand for heat pumps is anticipated to reach a projected USD 116.6 billion by 2020 from an estimated USD 56.9 billion in 2013. 

The report analyzies Heat Pump types, for space cooling, space heating and sanitary hot water heating, and includes air-to- air, air to water and ground source heat pumps.

Sales of air to water heat pumps were the fastest growing segment at a CAGR of 21.5% over 2007-2010, reaching 1.3 million units in 2010 from an estimated 730 thousand units in 2007. 

Further, volume sales of air to water heat pumps are likely to surpass the other heat pump categories by registering a 2014-2020 compounded annual growth rate of 13.6% in regions such as the United States and China.

Predicted Heat Pump technologies to gain market share in the coming years include, gas driven, hybrid and CO2 heat pumps.

For more information click here 

The European Heat Pump Association (EHPA) has published a best practice guide to the heat pump industry.

The European Heat Pump Best Practice Guide was jointly conducted by EHPA and Delta Energy & Environment presents the heat pump ecosystem:  The guide includes European best practice examples showing pathways to successful and sustainable heat pump markets.  The Guide is aimed at all stakeholders inside and outside the heat pump industry, helping them to implement five guiding principles which will establish solid foundations for long term sustainable growth and maximise the market opportunities for heat pumps.  The Guide’s explanation on how this can be achieved is illustrated by experiences and case studies from various European markets.

Lukas Bergmann from Delta-EE comments:

“This Guide will help a range of stakeholders - from governments and policy makers to energy companies and technology manufacturers - to realise the significant potential for heat pumps. It provides readers with a simple set of principles that allow them to work towards making the story of heat pumps in their country a story of success. This Guide will be a useful tool for anyone connected to this industry”.

Click here to read the Best Practice Guide

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