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Main product image of ALPHA2 26-99 Cast Iron Circulator Pump w/ Built-in Non-Return Valve
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ALPHA2 26-99 Cast Iron Circulator Pump w/ Built-in Non-Return Valve

Brand:
Grundfos
SKU:
99490916
Rating:
(2)
Q&A:
(0)
ALPHA2 26-99 Cast Iron Circulator Pump w/ Built-in Non-Return Valve
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$846.00 each
In Stock
In Stock
Get 28 Tomorrow, Oct 2
Order by 6PM, receive Tomorrow
Free Shipping This item ships free
Easy Returns No restocking fee for 90 days

Product Highlights

–
Product Highlight: Voltage
115V
Product Highlight: Connection Type
Flanged x Flanged Connection
Product Highlight: Amperage
1.7 Amps
Product Highlight: Material
Cast Iron
Product Highlight: Wattage
125 Watts

Description

–

Promotion:

This product is part of a Grundfos promo that is valid until November 30th, 2026. Submit your proof of purchase to receive a $25 e-gift card for each eligible Grundfos ECM pump purchased between September 15th and November 30th, 2026.

Submit your proof of purchase here by December 10th, 2026. While supplies last.


The Grundfos ALPHA2 26-99 F circulator pump is a high-efficiency, variable-speed ECM (electronically commutated motor) pump designed for hydronic heating systems. Engineered for optimal performance and energy savings, this advanced circulator automatically adjusts output to meet system demand, delivering superior comfort and efficiency. Featuring constant pressure and proportional pressure control modes, along with AUTOADAPT technology, the ALPHA2 continuously optimizes operation based on system size and changing heat demands throughout the year. This ensures maximum efficiency, reduced energy consumption, and simplified commissioning. The pump's one-button control interface with LED display makes setup fast and easy, while its magnetite-resistant design helps prevent blockages commonly found in hydronic systems. An integrated check valve enhances system protection and reliability.

  • Eight intelligent control modes for optimized system performance
  • Three defined proportional pressure curve settings for precise flow control and energy-efficient system performance
  • Constant pressure AUTOADAPT
  • Proportional pressure AUTOADAPT
  • Magnetite resistant design protects the pump from harmful iron oxide found in heating systems
  • High efficiency pump design and controls reduce energy consumption by up to 85%
  • 360 [mNm] starting torque clears pump of system debris and sediment
  • System and pump protection warning and alarm indicators for enhanced safety and reliable operation
  • LED indicator lights provide clear visibility of pump settings and real-time alarm alerts for improved system monitoring

Specs

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Amperage:

1.7

Frequency:

60 Hz

60 Hz

60 Hz

Material:

Cast Iron

Application:

Heating

Max Head (Ft):

42

Wattage:

125

Voltage:

115V

Connection Type:

Flanged x Flanged

Phase:

1

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Showing 1-2 of 2 reviews

A bit disappointed

After recently installing several Taco ECM pumps, this unit seems noisier, doesn't have bolt indentations on the mounting flanges, and has a very poorly designed wiring junction box. It does seem to function fine though.
Jeff
Berwick, PA
2 years ago
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Very high quality medium smart pump

Used this product on a zone with 5-port manifold for staple-up radiant floor. I found that the 5-port manifold, combined with the total length of each circuit's tubing had too much head loss for a smaller 15-55f alpha2 to move water at a reasonable velocity. This pump can do it though. Flows were dramatically improved, aproaching >3/4 GPM flow through each circuit. This also reduced the ΔT across the zone, giving better comfort. I like that it has two auto-adapt modes. For applications with higher head, this is the pump to get, especially for those interested in the energy saving or performance of an auto adapting pump.
nxl7930
Rochester, NY
5 years ago
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