The Grundfos UPM3 Flex AS underfloor heating pump is a high-efficiency circulator designed specifically for modern underfloor heating systems. Built with Grundfos’ advanced ECM motor technology, it delivers reliable water circulation while consuming significantly less energy than traditional heating pumps.
Whether you are replacing an existing manifold pump or installing a new underfloor heating system, the Grundfos UPM3 Flex AS provides dependable performance, quiet operation, and long-term reliability. As a result, it has become one of the most popular circulation pumps for domestic underfloor heating applications.
What Is the Grundfos UPM3 Flex AS Underfloor Heating Pump?
The Grundfos UPM3 Flex AS is an electronically controlled circulation pump developed for warm water underfloor heating systems. It is commonly fitted to manifold pump sets where it circulates heated water through multiple floor circuits.
Unlike conventional fixed-speed pumps, the UPM3 Flex AS automatically adjusts its performance to suit system demand. Therefore, it helps maintain consistent heating while reducing unnecessary energy consumption.
Its compact design also makes it ideal for replacing many existing manifold circulation pumps without requiring major pipework modifications.
Key Features of the Grundfos UPM3 Flex AS Pump
High-Efficiency ECM Motor
The Grundfos UPM3 Flex AS uses a permanent magnet ECM motor that provides excellent hydraulic performance while minimising electricity usage.
As a result, homeowners can reduce running costs without sacrificing heating performance.
Designed for Underfloor Heating Manifolds
This pump has been specifically developed for underfloor heating applications. It delivers the consistent circulation required to ensure warm water reaches every heating circuit evenly.
Consequently, rooms heat more evenly, helping improve comfort throughout the property.
Low Energy Consumption
Energy efficiency is one of the biggest advantages of the Grundfos UPM3 Flex AS underfloor heating pump. The intelligent motor adjusts output according to system requirements rather than operating continuously at full speed.
Therefore, the pump helps reduce electricity consumption while maintaining optimum system performance.
Benefits of the Grundfos UPM3 Flex AS Pump
Reliable Heat Distribution
Consistent water circulation is essential for efficient underfloor heating. The Grundfos UPM3 Flex AS ensures heated water flows evenly through each loop, helping eliminate cold spots.
As a result, the entire heating system performs more effectively.
Quiet Operation
The advanced motor technology keeps operating noise to a minimum. Consequently, the pump provides efficient circulation without causing unnecessary disturbance within the home.
This makes it ideal for both new-build and retrofit installations.
Easy Replacement and Installation
The compact dimensions and standard connections allow the Grundfos UPM3 Flex AS to replace many existing manifold pumps with minimal installation work.
Therefore, installers can complete pump replacements quickly and efficiently.
Technical Specifications
- Product: Grundfos UPM3 Flex AS
- High-efficiency ECM circulator pump
- Designed for underfloor heating manifold systems
- Electronically controlled operation
- Variable speed performance
- Low energy consumption
- Quiet operation
- Compact installation design
- Suitable for domestic underfloor heating systems
- Reliable long-term performance
- Maintenance-free motor
- 230V power supply
Key Features of the Grundfos UPM3 Flex-AS
The Grundfos UPM3 Flex-AS balances performance with practicality. Multiple control modes allow it to work with a wide range of heating appliances and control systems, giving installers excellent flexibility for both new installations and replacement projects.
It’s 1.5″ BSP connections is compatible with common heating manifolds and replacement scenarios.
Next Working Day Delivery: Yes, we hold all our products in stock at our 7000 sq ft Nottingham warehouse and at our 3000 sq ft warehouse in Market Harborough and use DPD for a tracked next-day delivery.
Collection Available: You can always collect from our Nottingham location and help yourself to a free tea and coffee.
