Grundfos Alpha2 26-99 SU Circulator Pump — SKU 99490917
The Grundfos Alpha2 26-99 SU is a high-efficiency, variable-speed hydronic circulator pump engineered for residential and light commercial heating and cooling systems. Designed with Grundfos’s proven AUTOADAPT technology, this pump continuously monitors system demand and automatically adjusts its speed to deliver optimal flow — reducing energy consumption and extending system life.
Intelligent Performance
The Alpha2 series is built around Grundfos’s advanced permanent magnet motor and integrated electronics, allowing the pump to self-optimize based on real-time system conditions. Whether operating in AUTOADAPT, proportional pressure, or constant pressure mode, the Alpha2 26-99 SU ensures precise, efficient circulation throughout the hydronic loop.
Key Features
- Variable-speed, electronically commutated permanent magnet motor for maximum efficiency
- AUTOADAPT mode automatically adjusts pump performance to match system demand
- Multiple operating modes: AUTOADAPT, proportional pressure, and constant pressure
- Compact, space-saving design suitable for tight mechanical room installations
- Integrated controls with easy-to-read LED indicator for operating status
- Quiet operation ideal for residential and light commercial applications
- Corrosion-resistant construction for long service life in hydronic systems
- Plug-and-play installation for fast, straightforward commissioning
Ideal Applications
- Residential and light commercial hydronic heating systems
- Radiant floor heating loops
- Boiler circulation and distribution
- Domestic hot water recirculation
- Fan coil and air handler systems
Why Choose Grundfos Alpha2?
Grundfos is a world leader in pump technology, and the Alpha2 series represents the pinnacle of intelligent circulator design. By automatically matching pump output to actual system needs, the Alpha2 26-99 SU can significantly reduce electrical energy use compared to fixed-speed circulators — delivering long-term savings on operating costs while maintaining consistent comfort levels throughout the system.
Order the Grundfos 99490917 Alpha2 26-99 SU from Jackson today and experience the difference that intelligent hydronic circulation makes.








