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Wilo SE is a European manufacturer of pumps and pump systems for the building technology, water and industrial sectors with headquarters in Dortmund, Germany. Founded in 1872 as copper and brass factory by Louis OplƤnder, the company has over 60 subsidiaries in more than 50 countries and employs about 7,800 people worldwide (2019 annual average).Wilo SE is the managerial holding of the WILO group, a result of a merger between Wilo-Salmson AG and Wilo GmbH in 2002. For the year 2018, the company registered a revenue of EUR 1,477.8 million with an EBIT of EUR 180.1 million. EUR 67.6 million was spent by the group for research and development in 2019. The group manufactures pumps and pump systems at 15 production facilities across Europe, Asia and America. The group produce about 10 million pumps annually.

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  1. B

    Identify Wilo pumps

    How do I decipher Wilo pump numbers? As an example what is the difference between a WILO ST 20/6-3 P and a WILO ST 20/7-3 C or a WILO ST 25/7-3 P Some pumps mention "2,6uF - 400VDB / ~ 230V - 50Hz" on the front panel, is this the start capacitor value? Thanks!
  2. W

    Wilo RS25/6-3 P Replacement required?

    Hi all, I'm trying to source a replacement pump for my heating system, I suspect the current pump is an older version that has been superseded, could anyone advise what the latest model would be or an equivelant? Wilo Type: RS25/6-3 P No: 4511050 Any help would be greatly appreciated :) Thanks
  3. J

    Wilo Yonos Pico 15 1-4

    Wilo Yonos Pico pump - electrical connector.
  4. S

    Wilo gold 50 plastic cover required

    Hi, anyone have a Wilo Gold 50 plastic cover? Thanks, will covers any postage plus costs.
  5. A

    Why is my new circulation pump twice as loud as previous model?

    Hi all, Let me start by saying, my heating works fine. I only know the basics of a system, and this may well be just me and my sensitive hearing... I have been in my property for 5 years. I had a Wilo circulation pump, which purred wonderfully. I never took a photo of it as a reference, but it...
  6. M

    Wilo Gold 50 Pump Replacement Advice

    Hi all I currently have a Wilo Gold 50 Central Heating Pump that after 20 years is now very noisy (no air in it) and is generally on its way out so I'm looking to replace it. I've been looking around for alternatives that are a lot more energy efficient and being the cheap skate I am šŸ˜, not...
  7. D

    Wilo gold 50 pump replacement

    Hi. I have an old Wilo gold 50 pump fitted to the CH system thats making a tapping sound and its getting louder, have looked at various sites and all I keep seeing is pumps that are electronic based is there any non electronic pumps that are proven reliable, dont want to buy used / recons from...
  8. U

    Wilo RSL 15/5-3 Ku motor head replacement.

    Hello, I need to replace circulation pump head for Wilo Rsl 15/5-3 Ku. Does anyone can explain me if i need to replace the pump head from the exact same model or are the pump head interchangeable? And if so can it be swapped out with something nonWilo as people around me have had quite some...
  9. P

    Wilo Yonos Pico pump - gurgling sound

    Hello My pump makes an odd sound... see attached file. Is this normal? Tried venting/bleeding it but no difference. Same sound whether the hot water or CH is on. Changing the pump speed doesn't help. Thanks Chris
  10. P

    Wilo Yonos Pico pump - venting question

    Hello When I choose the the venting function what does it actually do? Do the pump have its own vent hole? Do I need to vent the radiators while it's doing this? Thanks Chris
  11. N

    Wilo pump & expansion tank - need to repressurise

    I live in Azerbaijan where I have a Wilo MC605-EM pump attached to a Wilo LRS 50/10H diaphragm expansion vessel, which pumps water into my house on demand. We have a large water storage tank sitting between the mains and the pump so there is effectively no water pressure, the pump sucks water...
  12. A

    wilo cc booster pump system

    Hi, Does anyone have the password to access the 'wilo -service' user access level on a Wilo CC booster pump set? Thanks.
  13. N

    Replacement Pump for Wilo Gold 50 Pump

    Hi Was wondering if anyone could advise a good value replacement for the willo gold 50 pump , looked at so many now i am confused .
  14. M

    Wilo Pump Capacitor Replacement

    Hi All, new member here. I have a Wilo Gold RS50 pump fitted to a solar thermal system. I suspect the capacitor is faulty and wish to replace it. However, I cannot see the method to disconnect one of the capacitor leads (sited between the L & N connections). It is very tight and I don't want to...
  15. C

    My new Wilo Gold 50 central heating pump

    Hello everybody. I've just joined the forum as I was advised that it's really informative and solves problems. I hope you can help on this one then? I've moved to Portugal and rented my house out. The letting agent informed me that the tenants had problems with the heating and they sent...
  16. A

    Wilo gold 50

    Hi all help needed. I'm living in rented accommodation and the landlord hates helping. Last night I put heating on radiators stayed freezing. I checked the boiler outside it was warm (as if it had been on and recently gone off) I pressed the reset button on thermostat at the boiler nothing...
  17. S

    wilo pump

    hi have a wilo smart 25/6 pump which has stopped working and was wondering what the best replacement is to get cheers steve
  18. A

    Installing Wilo Circulating Pump

    I need to install a Circulating pump on the flow just under the boiler so I need to clip it but how would I space it out because the pump had a larger diameter than 22mm pipe and clips? I could just have one clip at the bottom and shorten the length of the pipe coming out the boiler valves...
  19. K

    Wilo or grundfos

    Hi could you please advise which is the best heating pump to buy . My wilo smart has started to get a bit noisey . Do I go for another wilo or change to grundfos . Also do I go for a fixed speed or variable again . I have a new boiler only 6 months old , open vented system with trv valves on the...
  20. L

    Replacement for Wilo Gold RS60 Circulating pump ?

    Afternoon all I have a very noisy Wilo Gold RS60 circulating pump in my system at home. Apparently this model is now discontinued. Can anyone please suggest a suitable replacement ?. Not only in performance but to fit physically port to port between the isolating valves. When searching on the...
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