Grundfos UPM3 Auto 25-70 130mm Underfloor Heating Pump 240V – New

Underfloor heating systems and compact boiler installations demand a pump that can deliver consistent, energy-efficient flow in confined spaces and at elevated ambient temperatures. The Grundfos UPM3 Auto 25-70 130mm Heating Pump (240V) is a high-performance variable-speed circulating pump engineered specifically for underfloor heating, domestic central heating, and boiler-integrated applications. It is also the recommended direct replacement for Alpha2L pumps, providing comparable performance with enhanced control flexibility.

Supplied as a brand-new genuine Grundfos component. The UPM3 Auto 25-70 features three control modes — proportional pressure (3 curves), constant pressure (3 curves), and constant curve (4 settings) — giving installers flexibility to match the pump to system requirements. The 130mm port-to-port dimension and 1½" BSP connection make it a straightforward replacement in most existing installations. Original price: £169.99 — current price: £110.80. Supplied with a full 12-month manufacturer warranty.

Technical Specifications

Suitable Applications

• Underfloor heating systems
• Domestic central heating
• Compact boiler and heating cabinet installations
• Alpha2L pump replacement (note: does not include AutoAdapt function)

Brand New. 12-Month Manufacturer Warranty.

Supplied new in original Grundfos packaging. The UPM3 Auto 25-70 delivers variable-speed high-efficiency performance for underfloor and domestic heating applications. Supplied with a full 12-month manufacturer warranty.

Delivery & Returns

Orders placed before 1:00 PM (Mon–Fri) are dispatched the same working day. Standard and next-day delivery available at checkout. Returns accepted within 30 days in original unused condition.

Note: The UPM3 Auto 25-70 does not include AutoAdapt function. Confirm your system specifications match before ordering. Installation should be carried out by a qualified heating engineer.

Product Reference