GRUNDFOS - ALPHA1 26-99 F - 99490914

The Grundfos ALPHA1 26-99 F Circulator Pump (99490914) is a high-efficiency ECM variable speed circulator designed for residential and commercial hydronic heating and cooling systems. Featuring a durable electrocoated cast iron housing, 115V single-phase motor, and integrated 0–10V external speed control, this circulator delivers exceptional energy savings while maintaining reliable system performance. The ALPHA1 26-99 F is ideal for radiant floor heating, fan coil units, boilers, geothermal systems, and commercial HVAC applications. Its electronically commutated motor (ECM), integrated check valve, and magnetite-resistant construction ensure quiet operation, low power consumption, and long service life.

Cross References
Grundfos — 99490914
Grundfos — ALPHA1 26-99 F
Grundfos — 18035R020PC1 (Series designation used in some distributor catalogs)
Usage

The Grundfos ALPHA1 26-99 F is used to circulate heated or chilled water through closed-loop hydronic systems. Typical applications include radiant floor heating, baseboard heating, fan coil units, geothermal systems, boilers, heat pumps, and commercial HVAC equipment. The integrated ECM motor automatically adjusts pump performance to system demand through a 0–10V control signal, reducing electrical consumption while maintaining consistent flow. The included check valve prevents reverse circulation, while the magnetite-resistant design improves reliability in closed-loop heating systems.