Selection Criteria Heat Pumps

Topten showcases the most energy-efficient heat pumps of Europe.
The product lists contains brine-to-water heat pumps, water-to-water heat pumps and air-to-water heat pumps for single-family homes and apartment buildings.

Product lists

Topten presents:

• Heat pumps brine/water
• Heat pumps water/water
• Heat pumps air/water

Technical criteria

All Topten heat pumps meet the following criteria:

• Minimum energy class A+++ for 35° C and 55° C.
• All models have F-gas-free refrigerant

Order of display of the products

The order is based on the Efficiency Index at 35° C. The sequence can be changed individually.

Terminology

Supplier

Supplier of the series with direct link.

Product line

Other models whose coefficients of performance are in a similar range, as they are from the same series. A series is characterised by the following features:

• Same refrigeration process
• Same refrigerant
• Same compressor series
• Same design of the throttling element
• Same evaporator design
• Same type of capacitor
• Same type of defrost
• Same power control
• Same software version in the controller
• The variable features form a monotone series (theoretical displacement, heat exchanger surfaces, filling quantity)

Further product series

Other product lines of the supplier that meet the criteria.

Heat output

The useful heat output delivered by the heat pump under the following test conditions. The heat output is given in kW:

W (water) = inlet water temperature [°C] or heater outlet water temperature [°C].A (air) = air inlet temperature [°C].
This means that at the B0/W35 test point the brine-to-water heat pump is operated with 0° C brine source temperature and with 35° C water supply temperature.

COP

COP (Coefficient of Performance) is the coefficient of performance or the ratio of heat output (heat output delivered to the heating circuit) to electrical output (power expended). An example: for a heating capacity of 10 kW (e.g. 1st test condition) and an electrical capacity of 2 kW, the COP value is 5 (10 kW / 2 kW = 5). This means that the electrical power used is transformed in 5 times more usable heat output. The COP value of heat pumps listed on Topten was determined by the "heat output" test conditions described below.

Indoor/outdoor noise (dB(A))

indoors and outdoors Sound power level according to EN12102 according to manufacturer's specifications.

Refrigerant

The refrigerant fluid used to transfer heat in a heat pump, which absorbs heat at low temperature and low pressure and releases heat at higher temperature and pressure, usually with changes in the fluid's state.

As soon as a stationary system requires more than 3 kg of refrigerant, there is a reporting obligation for new and existing systems.

ODP = Ozone Depletion Potential related to R11
GWP = Global Warming Potential related to CO2

* The GWP value usually used for R32 is 675 (IPCC 2007, page 4). In the more recent report, the GWP value was updated to 771 (IPCC 2021, page17).

Infoplus

Publications

• Guidelines accompanying regulations (EU) No 811 & 812/2013 with regards to the energy labelling of space heaters, combination heaters, packages of space heater, temperature control and solar device and packages of combination heater, temperature control and solar device.

Standards and labels

• EU Ecodesign regulation: Commission Regulation (EU) No 813/2013 of 2 August 2013 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for space heaters and combination heaters.
• EU Energy Label regulation: Commission Delegated Regulation (EU) No 811/2013 of 18 February 2013 supplementing Directive 2010/30/EU of the European Parliament and of the Council with regard to the energy labelling of space heaters, combination heaters, packages of space heater, temperature control and solar device and packages of combination heater, temperature control and solar device.
• EN 14511: Air conditioners, liquid chilling packages and heat pumps for space heating and cooling and process chillers, with electrically driven compressors.
• EN 14825: Air conditioners, liquid chilling packages and heat pumps, with electrically driven compressors, for space heating and cooling. Testing and rating at part load conditions and calculation of seasonal performance
• EN 12102: Air conditioners, liquid chilling packages, heat pumps, process chillers and dehumidifiers with electrically driven compressors. Determination of the sound power level. Heat pump water heaters.
• Topten Policy Recommendations from August 2022

Links

• EHPA Quality Label (European Quality Label for Heat Pumps)
• Energy efficiency measures by the European Commission
• The European council for an energy efficient economy eceee provides a status overview on all products in the Ecodesign & Energy Labelling process
• Coolproducts informs about the EU ecodesign process. It is a coalition of NGOs' campaign for a stronger, fast Ecodesign Directive to save the climate and money.
• ECOS (Ecostandard) is an international NGO with a network of members and experts advocating for environmentally friendly technical standards, policies and laws.
• EPREL (European Product Registry for Energy Labelling) is the European product database. Products with an energy label are registered in EPREL in order to provide consumers with detailed product information.

Info for manufacturers and suppliers

Please notify us of additional products that meet the Topten criteria: info(at)topten.info

02/2025 Bush, Hepp