Grundfos UPM3 FLEX AS Pump.
The Grundfos UPM3 FLEX AS Pump is a premium high-efficiency circulating pump designed for modern underfloor heating and central heating systems. Built using advanced ECM motor technology, it delivers reliable circulation while significantly reducing energy consumption compared with traditional heating pumps.
Whether you’re replacing an existing pump or installing a new underfloor heating manifold, the Grundfos UPM3 FLEX AS provides quiet operation, dependable performance and intelligent control. Its compact design makes installation straightforward, while its energy-saving technology helps reduce running costs throughout the life of the system.
At Kudos Trading, we supply genuine Grundfos pumps trusted by professional heating engineers across the UK.
Why Choose the Grundfos UPM3 FLEX AS Pump?
The Grundfos UPM3 FLEX AS has become one of the most popular circulating pumps for underfloor heating systems because it combines exceptional reliability with impressive energy efficiency.
High Energy Efficiency
The advanced ECM motor automatically reduces electricity consumption without compromising system performance.
Quiet Operation
Designed to operate with minimal noise, making it ideal for domestic and commercial installations.
Reliable Water Circulation
Maintains consistent flow through your underfloor heating manifold to ensure even heat distribution.
Compact Installation
The compact body allows simple installation in manifold cabinets and plant rooms where space is limited.
Trusted Grundfos Quality
Grundfos is recognised worldwide for manufacturing reliable heating pumps with outstanding durability and performance.
Key Features
- Genuine Grundfos product
- High-efficiency ECM motor
- Low energy consumption
- Quiet operation
- Compact installation design
- Reliable circulation performance
- Suitable for underfloor heating systems
- Ideal replacement circulating pump
- Long service life
- Professional installer favourite
Technical Specification
- Manufacturer: Grundfos
- Model: UPM3 FLEX AS
- Pump Type: High-efficiency circulation pump
- Motor Technology: ECM
- Application: Underfloor heating and heating systems
- Energy Efficient: Yes
- Installation: Horizontal shaft installation recommended
- Power Supply: 230V
- Suitable For: Domestic and commercial heating systems
(Expand with exact head, flow rate, connection size and wattage from the manufacturer’s datasheet if required.)
Ideal Applications
The Grundfos UPM3 FLEX AS pump is suitable for a wide range of heating applications, including:
- Water underfloor heating systems
- Underfloor heating manifolds
- Mixing valve assemblies
- Domestic heating systems
- Low temperature heating systems
- Commercial heating installations
- Renovation projects
- New build developments
- Plant rooms
- Multi-zone heating systems
Why Install a High-Efficiency Pump?
Modern heating pumps use considerably less electricity than older fixed-speed pumps while maintaining excellent system performance.
Benefits include:
- Lower running costs
- Reduced energy consumption
- Improved heating efficiency
- More consistent room temperatures
- Longer operating life
- Quieter performance
- Greater system reliability
- Reduced environmental impact
A high-efficiency pump is one of the simplest upgrades you can make to improve the performance of your heating system.
Complete Your Underfloor Heating System
Pair your Grundfos UPM3 FLEX AS pump with compatible products from Kudos Trading to build a complete, reliable underfloor heating system.
Underfloor Heating Manifolds
Create efficient heat distribution using our premium stainless steel and brass underfloor heating manifolds.
Mixing Valve Sets
Control water temperature accurately with our complete mixing valve assemblies.
Actuators
Automate individual heating zones using reliable thermal actuators.
Heatmiser Controls
Manage every room independently with smart Heatmiser thermostats, wiring centres and control systems.
Underfloor Heating Pipe
Choose from premium PE-RT, PE-RT-AL-PE-RT and PEX-AL-PEX pipe for dependable system performance.
Plumbing Manifolds
Expand your installation with our range of hot and cold water plumbing manifolds and accessories.
Plumbing Manifold Ball Valves
Add simple isolation for easier maintenance and servicing.
Eurocone Fittings
Connect 16mm x 2mm multilayer pipe securely using our premium brass Eurocone fittings.
Why Buy the Grundfos UPM3 FLEX AS Pump from Kudos Trading?
With more than 25 years of experience supplying heating and plumbing products, Kudos Trading understands what professional installers expect from a circulation pump.
We only supply quality products from trusted manufacturers and provide expert technical advice to help you choose the right components for your heating system.
When you buy from Kudos Trading, you’ll benefit from:
- Genuine Grundfos products
- Competitive UK prices
- Fast nationwide delivery
- Expert technical support
- Extensive stock availability
- Professional customer service
- Trusted heating specialists
Frequently Asked Questions
What is the Grundfos UPM3 FLEX AS pump used for?
The Grundfos UPM3 FLEX AS is a high-efficiency circulation pump designed for underfloor heating and modern central heating systems.
Is the Grundfos UPM3 FLEX AS suitable for underfloor heating?
Yes. It is widely used on underfloor heating manifolds and mixing valve assemblies to provide reliable water circulation.
Is this an energy-efficient pump?
Yes. The UPM3 FLEX AS uses ECM motor technology to reduce electricity consumption while maintaining excellent circulation performance.
Can I replace an older Grundfos pump with the UPM3 FLEX AS?
In many cases, yes. Always check the connection sizes and system requirements before replacing an existing pump.
Is the pump quiet during operation?
Yes. The pump is designed to operate with very low noise levels, making it suitable for residential properties.
Can this pump be used in commercial buildings?
Yes. It is suitable for many commercial heating and underfloor heating installations.
Does the pump require regular maintenance?
The pump is designed for long-term, reliable operation with minimal maintenance when installed correctly.
Can I install the pump myself?
Installation should always be carried out by a qualified heating engineer to ensure safe and correct operation.
What products should I install alongside this pump?
The pump is commonly installed with underfloor heating manifolds, mixing valves, actuators, controls and high-quality multilayer pipe.
Why buy the Grundfos UPM3 FLEX AS from Kudos Trading?
We supply genuine Grundfos products backed by expert advice, competitive prices and fast UK delivery.
Related Products
- Underfloor Heating Manifolds
- Mixing Valve Sets
- Heatmiser Controls
- Thermal Actuators
- PE-RT Pipe
- PE-RT-AL-PE-RT Pipe
- PEX-AL-PEX Pipe
- Plumbing Manifolds
- Plumbing Manifold Ball Valves
- Eurocone Fittings
- Grundfos UPM3 AUTO L Pump
- Wilo Underfloor Heating Pumps
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.
