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Laing EcoCirc D5 38/700B Circulation Pump

This solar pump can be used wherever a highly efficient circulation pump is needed without a direct connection to AC power. It can be connected directly to a photovoltaic panel and is characterized by its small size, high efficiency, very low power consumption and its MPP tracking. The shaftless spherical motor technology enables a long, maintenance free and quiet service life. Areas of application are thermal solar systems for single family homes.

Please download full specifications sheet here.

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Excl. Tax: R 2,038.26 Incl. Tax: R 2,344.00

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Product Description


The first DC spherical motor pump for direct connection to photovoltic panels with automatic performance optimization using Maximum Power Point (MPP) tracking.

The principle of the spherical motor, which was invented by Laing, is fundamentally different from conventional canned motor pumps. The only moving part in a spherical motor is a hemispherical rotor/impeller unit which sits on an ultra-hard, wear-resistant ceramic ball. There are no conventional shaft bearings or seals. This eliminates bearing noise and seal leaks. This pump is robust and has an estimated service life in excess of 50,000 hours.
The self-realigning bearing is lubricated and cooled by the media. Maintenance is not necessary under normal conditions. Even after prolonged shutdown, the pump will start reliably. All parts exposed to the fluid are completely corrosion resistant.

Over-temperature safety device
The Ecocirc Solar pump comes with an integrated over-temperature safety device which shuts off the pump electronics when reaching temperature over 230°F. When the temperature of the pumped fluid is below 203°F the pump will function normally. The temperature of the electronic components is influenced by the temperature of the pumped media as well as by the speed setting.
After reaching a critical temperature 203°F the pump will lower its speed automatically in order to avoid a total shutdown. However, if the temperature continues to rise (e.g. caused by too hot pumped media), the pump will eventually shut down completely. After cooling down, the pump will restart automatically.


  • Soft start at very low in-rush current ( soft start algorithm, less than 1 Watt required ).
  • Economical and powerful.
  • Long life, blockage free and maintenance free.
  • RF suppressed.
  • Protection against reverse polarity.
  • Micro processor optimized flow.

Technical Data

  • Motor design : Electronically commutated spherical motor with permanent magnet rotor/impeller.
  • Voltage : 12 - 24 Volt.
  • Power consumtion* : min. start-up power consumption less than 1 Watt, max power consumption 22 Watts.
  • Current draw : 0.25 - 1.46A.
  • Acceptable media : domestic hot water, heating water, water/glycol mixtures, other media on request**.
  • Environment : IP 42.
  • Insulation Class : Class F.

Power consumtion and start may vary in different installations. Please check pump performance with more than 20% glycol

Additional Information

Additional Information

Disclaimer Please note that stock availability is subject to prior sales. Prices exclude delivery. The image serves as an example of what the product looks like and may differ slightly in appearance.
Guarantee/ Warranty 12 month product warranty
Pump Watts No
Type Circulation
Amp Rating No
Voltage 12 - 24V DC


Customer Reviews (5)

Laing D5 EcocircReview by Willem Ferguson
When one installs this pump, it is a requirement to install a water filer inline to protect the pump from all the rust and other rubbish that accumulates inside a geyser and that can get trapped in the pump. (Posted on 07/04/2016)
Laing D5 EcoCircReview by Willem Ferguson
The Laing D5 Ecocirc has no bearings. It is a magnetic pump with ceramic components. therefore it should not rust. I have two of these pumps that have been running continuously for seven years now. The plumber just managed to wreck one of these by letting the pump run without a water supply. It is expensive, though. (Posted on 07/04/2016)
Great efficiency but canĀ“t deal with heat or rust.Review by Chris
I have two of these pumps, first one is a solar edition and the second is 12V as well but can be adjusted by external voltage. Both pumps are very efficient and can work with just 3W power consumption, I can confirm this in my tests. The downside is that the bearing in the rotor can be worn out very quickly if the water gets too hot. Overheat the water in your system once and the pump is done. Second downside is that if anything magnetic gets through to the pump it will jam. You should not use this pump when having anything made of iron in contact with the water. (Posted on 04/01/2016)
Premature Pump FailureReview by Henry
Purchased the pump 4 April 2014, it would have been a great pump if it did not failed prematurely on Sunday 29 November 2015 seven months after the purchase.

Pump is supplied by a 10 W solar PV panel and are used in a hybrid thermos-siphon solar water geyser where it is used to circulate water from the geyser through a solar collector. The water circulated are filtered and softened, no mineral build up was detected when the pump was opened on Sunday.

Upon investigation it seems as if the porcelain tip of the shaft has worn in to the locating bush resulting in out of center alignment which results in contact between the rotor and the stator of the pump...

I was forced to replace this pump with a Wilo pump which will not be nearly as energy efficient but should outlast this pump by many years..

Henry Meier
(Posted on 02/12/2015)
Has worked continuously for 4 yearsReview by Ian Matthew
The pump was supplied included with a charging panel and a solar panel. It has worked successfully for 4 years, without any problems. I connected it in line with the supply to my geyser, and functioned as an on demand unit. (Posted on 10/03/2015)

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