Due to an issue with PayPal, some payment methods are currently unavailable, sorry any inconvenience

Free DeliveryFree Delivery
Experience is EverythingExperience is Everything
Rating 4.71 Reviews 0000

Grundfos UPS3 15-50/65 Central Heating Circulator

Was £197.68 £164.73 Now £151.19 £125.99

Save £46.49 £38.74 (23%)

Was £197.68 £164.73 Now £151.19 £125.99

Save £46.49 £38.74 (23%)

More product options available

Part Number: 23953

Manufacturer's Part Number: 99199622

Grundfos UPS3 15-50/65 Central Heating Circulator

The Grundfos UPS3 15-50/65 Central Heating Circulator is a highly efficient canned-rotor circulator, designed for optimal water circulation in domestic heating systems. Whether you're looking to replace an existing pump or integrate it into a new heating system, this versatile pump delivers on all fronts.

With efficient control modes you can choose from constant pressure, proportional pressure, and constant curve mode, this pump adapts to your specific needs. It includes an LED indicator to provide real-time operating status updates, along with a warning and alarm for intelligent monitoring.

It has precise speed control with low-voltage PWM (Pulse Width Modulation) profile A - Heating, ensuring your system operates with accuracy. And thanks to the one-button interface which simplifies replacement and settings, making the process quick and for a hassle-free user experience.

The robust pump design and high-quality materials, constructed from cast iron and electrocoated for superior corrosion resistance, ensure a long and reliable service life. Self-venting capabilities, streamline commissioning, and maintenance-free operation means you can trust in consistent performance.

The compact design, complete with a pump head and integrated control box, effortlessly fits into standard installations, with a broad ambient temperature range.

The efficient motor features a synchronous permanent-magnet motor and integrated frequency converter within the control box which optimises pump speed.

When it comes to energy efficiency, our circulator sets the standard with an EEI (Energy Efficiency Index) of ≤ 0.20. Elevate your heating system's performance and enjoy the benefits of efficient circulation.

Compatible motorised valves and pump valves available.


  • High-efficiency canned-rotor circulator for domestic heating systems.
  • Suitable for stand-alone or integrated use in new or existing systems.
  • Three control modes for versatile performance.
  • Low-voltage PWM speed control.
  • User-friendly one-button interface.
  • LED indicators for real-time status and alerts.
  • Durable design with cast iron housing and corrosion resistance.
  • Synchronous permanent-magnet motor for high efficiency.
  • Maintenance-free operation.
  • Achieves an EEI (Energy Efficiency Index) of ≤ 0.20, setting the standard for efficiency.
See More ⯈

Product Specification

Brand Grundfos
Approved by CE. EEI values according to EN 16297:3
Ambient Temperature Max: 55° C
Application UPS3 can not only be used in system installations but also inside many of the UK’s domestic boilers. Simply scan the old pump with the new Grundfos GO Replace smartphone app and it will tell you if the UPS3 is a compatible fit.
Connection 1.1/2" BSP PM
Energy Efficiency Index ≤ 0.20
Input Power 4 W to 60 W
Liquid Temp. Range 2 to 95° C
Material Cast Iron Body
Max. Glycol Maximum water/propylene glycol mixture is 50%
Max. Head 6.5 m
Max. Operating Pressure 10 bar
Model Name UPS3 15-50/65
Port To Port 130 mm
Power Supply 230 V, 50 Hz
Size 1.1/2"
Type Circulating Pump
Voltage 230 V
Weight 1.9 kg

Ask a Question

Questions and Answers - FAQ