Grundfos A rated pump (UPM3 Auto L)

Grundfos UPM3 Auto L A-Rated Circulator Pump

Compact High Efficiency Glandless Pump for Underfloor Heating & HVAC

The Grundfos UPM3 Auto L is an A-rated, high-efficiency glandless circulator pump designed for seamless integration in underfloor heating and HVAC systems. Its ultra-compact design makes it smaller than the traditional UPS model, allowing for easier installation even in tight spaces. With an Energy Efficiency Index (EEI) of ≤ 0.20, it delivers outstanding performance while minimising power consumption, making it ideal for modern low-energy builds.

This internally controlled pump supports ambient temperatures up to 70°C and comes with active or passive inrush current limitation, ensuring stable operation. It’s compatible with a wide range of standard and customised housings, and is trusted by heating professionals for reliability, size efficiency, and energy-saving performance. Perfect for integration into underfloor heating pipe systems, especially where compactness and durability are essential.

UPM3 AUTO L is for all applications in which an internally controlled pump is needed. It is designed to be used in appliances or cabinets with increased ambient temperatures and limited space options; either in standalone applications or in kit systems without PWM controller.

Features and Benefits

•Glandless High Efficiency circulator for integration in HVAC systems; EEI ≤ 0.20 EN16297/3

•Smallest design ever for a circulator; smaller than the well-known UPS circulator Internally controlled circulator

•Available with many standard and customized housings

•Active or passive inrush current limitation

•Ambient temperatures of up to 70 °C.

•Substitutes ALPHA2L pumps

•Lowest space requirements ever for a circulator integrated in an appliance

•Optimised design fit for easy accessibility

•Easy access to the user interface from front

•Easy access to the connectors from front

•Easy access to the pump head screws from the front

•Easy access to the de-blocking screw from front Intelligent configuration

•Different signals and profiles available (PWM A, PWM C, KMBus)

•Standard return signal showing power consumption, alarm and operation status

•Other customized input profiles and different return profiles are possible e.g. flow estimation

•Ready for Conversion according Ecodesign requirement for August, 2015 exceeding benchmark level; EEI ≤ 0.20 EN16297/3

•Unmatched reliability

The Grundfos UPM3 Auto L is a high-efficiency underfloor heating pump designed for HVAC systems and tight installation spaces. This internally controlled circulator ensures optimal performance with an EEI ≤ 0.20, exceeding Ecodesign 2015 standards. Featuring a compact design, it replaces the ALPHA2L pump and supports PWM A, PWM C, and KMBus signals. The Grundfos UPM3 pump settings offer flexible operation, and its front-access design simplifies configuration. Whether you’re looking for a Grundfos UPM3 Auto Manual, Grundfos UPM3 pump lights meaning, or Grundfos UPM3 Auto 25-70 settings, this pump is a reliable solution for your heating needs.