GDHV

What is COP and EER? Glen Dimplex investigate…

  • 22 Mar 2022

What is COP and EER and how do they affect the choice of energy efficient HVAC technology designed to reduce carbon emissions and achieve compliance? GDHV investigate…

What is COP and EER?

The Coefficient of Performance (COP) and Energy Efficiency Ratio (EER) are measures of a heat pump or heating and cooling solution’s efficiency. They indicate a ratio of useful heating or cooling produced by the unit against the energy it consumes. For example, the COP of a heat pump that can provide 3kW of heat against the input of 1kW of electricity is 3. The EER that generates a cooling effect of 12BTU against the input of 1kW of electricity is 12.

Can COP and EER be used to establish the overall energy efficiency of a heating or cooling unit

In simple terms, the higher the COP or EER, the more energy efficient the heat pump is. This is helpful as a relatively simple efficiency qualifier calculated as a punctual value at a given condition. As we know, however, the energy efficiency of heat pumps can change based on many factors, including for example variations in external temperatures, such as those from seasons.

The load requirement for heat pumps also changes, especially in temperate climates such as the UK. The Seasonal Coefficient of Performance (SCOP) and Seasonal Energy Efficiency Ratio (SEER) consider the energy efficiency of a heat pump throughout the entire heating and cooling season, providing a more accurate comparison of likely installed performance than COP. 

SCOP can be calculated for more complex multi-unit solutions too, giving an important performance indicator for HVAC systems such as communal ambient loops that utilise in-apartment water source heat pumps and air source heat pumps as central plants. 

What do COP and EER tell us about carbon emissions?

When used with the Carbon Emissions Factor (CEF), COP and EER can be used to derive the carbon emissions produced by a heat pump. This is relevant in the context of compliance with the anticipated uplifted Part L.

When introduced, SAP10 will reduce the CEF of electricity by more than half, from 0.519 CO2/kWh to 0.233 CO2/kWh. Adjustments made to other fuels will be negligible. This means that to achieve the expected carbon reductions indicated by the Future Homes Standard, heat pumps are likely to become the default technology. 

To find out more about how heat pumps can help reduce carbon emissions and improve the energy efficiency of your development, contact one of GDHV’s HVAC specialists today.

Leave a Reply

Latest news

New technical guides help determine correct roof space ventilation requirements

Two new visual technical guides from Glidevale Protect have been released to help specifiers and roofing contractors determine the correct roof space ventilation requirements depending on the type of pitched roofing underlay used

Posted in Articles, Innovations & New Products, Posts, Publications, Roofs, Ventilation

New heritage style door option added to Senior Architectural Systems' Ali VU range

The popular Ali VU range of slimline aluminium windows and doors from Senior Architectural Systems has been extended with the addition of a new heritage style door option

Posted in Aluminium Products, Articles, Doors, Innovations & New Products, Posts

Effective access control is vital for ports says Abloy UK

In light of news surrounding delays and issues with the government’s new Border Target Operating Model Abloy UK is urging ports to ensure facilities are equipped with effective access control systems to minimise further disruption

Posted in Access Control & Door Entry Systems, Articles, Posts, Security and Fire Protection

Acoustic panelling from Troldtekt creates striking effect at 6 Embassy Gardens

Wood wool acoustic panelling with a black finish from Troldtekt has been specified throughout 6 Embassy Gardens at Nine Elms in London

Posted in Acoustics, Noise & Vibration Control, Articles, Ceilings, Posts