Table of Contents

Selection Criteria Circulation Pumps


Topten (Best products of Europe) presents the most energy efficient circulation pumps for heating systems of Europe.

In order to be selected, pumps must comply with the following criteria:
  • EEI ≤ 0.27 (Ecodesign requirement starting in 2013)
  • maximum electric power consumption = 300W

Data Sources

  • Producers’ declarations (according to Europump Energy Label)
  • Topten sites such as

Order of presentation

The products are ranked according to their flow rate. The order of presentation can be changed by clicking on the headings of the tables.


Brand and Model

Brand and Model name with link to the producer.

Energy efficiency class and index

Energy efficiency class and efficiency index according to the Europump energy label. All pumps on Topten are class A.

Efficiency class
Energy Efficiency Index
A EEI < 0.4
B 0.4 ≤ EEI < 0.6
C 0.6 ≤ EEI < 0.8
D 0.8 ≤ EEI < 1.0
E 1.0 ≤ EEI < 1.2
F 1.2 ≤ EEI < 1.4
G 1.4 ≤ EEI

Class A pumps are speed controlled pumps with a permanent magnet motor. They can still operate efficiently at only 1/3 of the indicated flow rate. Non-controlled pumps are in class D or lower.

Flow rate (m3/h)

Flow rate at maximum hydraulic power (where Q*H is maximum, according to the Europump classification). The flow rate is the primary criteria for dimensioning a pump. Well insulated single family houses require less than 0.5 m3/h - most pumps are too large for that. Older houses (up to four-family houses) need 1 to 2 m3/h.

Head (m)

Delivery head of the pump (where Q*H is maximum, according to the Europump classification).

Maximum power input (W)

According to the data sheet. Speed controlled class A pumps usually run at much lower power.

Electricity consumption (kWh/period)

Electricity consumption in kWh during a 8-month heating period (5000 hrs operation).

Countries available

This item displays the availability of models in European countries according to producers’ declarations and national Topten sites. "EU" means all countries of the European Union. However, the availability is sometimes difficult to define precisely depending on retailers' selling decisions or if the supply is stated as possible on catalogues but there is no marketing for specific products in some countries.
The country codes are according to ISO.



EU-Commission regulation on Ecodesign requirements for circulators. July 2009.

Europump Energy-Label, Classification scheme

Producers and retailers are kindly asked to contact info(at) to inform about more products which meet the Topten selection criteria.