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ALPHA 15-58F Smart ECM High Efficiency Circulator Pump with Optimized Setpoint Control
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$293.07 each
In Stock
Order by 6PM, receive Monday
MANUALS (3)
This item replaces: 99163903, 59896877, 59896832, 99163906
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Free Shipping This item ships free
Easy Returns No restocking fee for 90 days
Product Highlights
–
GF Connection
0.71 Amps
38 Watts
Cast Iron
Description
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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 ALPHA 15-58 is a high-efficiency circulator pump designed for heating systems. It is built with an ECM (Electronically Commutated Motor) for maximum performance. This digitally connected pump features intelligent controls with constant pressure, proportional pressure, and constant curve settings, each offering adjustable levels and AUTOADAPT functionality. The AUTOADAPT setting automatically optimizes performance, eliminating the need for manual selection. With fewer callbacks than other pumps, the Grundfos ALPHA 15-58 ensures reliable, efficient operation. Ideal for residential and light commercial applications for maintaining a steady, energy-efficient heating system. The ALPHA meets the energy conservation standards for circulator pumps the Department of Energy established, which will take effect in May 2028.
- High-efficiency heating circulator built with an ECM for energy savings
- Constant air detection improves heat transfer and reduces system noise
- Self-venting feature removes trapped air using the Grundfos Go app during set-up or service
- Dry-run protection stops the pump if water is not detected in the system
- Available in a cast iron flange with a check valve or a cast iron rotated flange with a check valve
- Smaller conduit box helps with installations in small spaces, and a toolless lever connector enables wiring to be done outside the conduit box
- With Constant Flow, the pump will maintain a flow set at installation
- Touchscreen for easy user interface operation
- LED lights give a numeric display of flow, feet of head, and watts
- Maintains one of the highest Energy Ratings in the market (193) based on the Hydraulic Institute Energy Rating
Specs
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| Max Head (Ft): | 19.03 |
|---|---|
| Amperage: | 0.71 |
| Connection Type: | GF |
| Wattage: | 38 |
| Flow Rate (GPM): | 17 |
| Material: | Cast Iron |
| Application: | Heating |
Questions?
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Compare Similar Products
Brand
Max Head (Ft)
Amperage
Connection Type
Material
Application
CURRENT ITEM
19.03
0.71
GF
Cast Iron
Heating
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Product Reviews
4.7 out of 10 reviews
78% would recommend this product
5 star
70%
4 star
30%
3 star
0%
2 star
0%
1 star
0%
Customer Images
Showing 1-10 of 10 reviews
Great pump
Replaced similar pump, fantastic exchange. Pump started up and ran perfect. The setup via Bluetooth was a new one for me, but was intuitive and easy. Very pleased
Honeowner
Colorado
4 months ago
Verified Buyer
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Great Pump, Fixed Issue.
We had a new wall mount radiator zone with manifolds and TRVs installed on a combi boiler hydronic system. Our system already had 2 baseboard heat zones with zone valves and a single "dummy" circ. pump. Plumber never added a bypass nor upgraded the circ pump to prevent the TRV hammering noise. Ordered this ALPHA pump and the next day it was delivered, installed it, and now the hammering noise is gone.
Excellent Pump with a lot of features and gives you alot of data on your system. Highly Recommend!
APC
CT
6 months ago
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Pump OK so far, documentation poor.
The pump seems to be working OK, as do most Grundfos pumps, but the "Quick Start" guide that comes with it is poor. I can't even tell what the pictures/diagrams are trying to tell me. Please, just give me a few words, why is that so difficult?
Warm in NE
NH
2 years ago
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Mixed feelings about this one
First pump was dead out of the box. Ordered replacement, so far it's doing its job. Is it worth the money? It's nice to be able to see all of your operating pressures, flow and temps, via app. Easy to set up, and install but the fact that first one didn't work out of the box, makes me nervous that this thing won't hold up long term. I picked this pump because of steady pressure that it maintains with multiple zones open at the same time, it does good job at that, keeps all the lines pressurized evenly and flow is consistent on all 5 zones that it serves regardless of head difference between some of the zones. Being that first one was a dud, I honestly can't recommend this to anyone who is looking for a proven product that will serve them long time.
Boris
NY Upstate
2 years ago
Verified Buyer
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Great Product and fast shipping.
This was a replacement part for a 17 year old pump. It fit perfect and is working as designed. Thanks.
Homeowner
East Amherst, NY
2 years ago
Verified Buyer
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Good pump
Installed as replacement for the older Alpha 15-55 pump. Wiring location changed slightly so wiring may need to be adjusted. Much better fine-grained programming control vs old model.
Lawrence
Brooklyn, NY
3 years ago
Verified Buyer
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Yes
Very good energy economy and easy to use
Baschta
Mi
3 years ago
Verified Buyer
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Unparalleled product quality & Reliable delivery!
Supply House delivers much needed, high quality parts, and tools in such an EFFICIENT & RELIABLE manner that they are, without a doubt our company's go to Supplier. Thanks for a great year of service and expertise, and here's to a NEW YEAR of the same!!!
KJ
Concord, CA
3 years ago
Verified Buyer
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I love this pump!
It isn't often that a component of my hydronic system brings me joy but this pump does that.
I purchased one of these to supply an 8 zone, zone valve actuated, fin tube second floor of my house. A perfect application. I set the pump to constant pressure and it runs at the appropriate speed to provide flow for 1 to 8 zones as demanded. Most of the time it's just one or two zones at a time and it pulls about 15 watts. If all 8 zones are calling for heat it's still under 30 watts. And I can see the watts displayed on the pump every time I walk past the boiler room!
Seeing the efficiency displayed prompted me to replace my other perfectly good 15-58 pump with this Alpha model. This second pump supplies underfloor heat to the first floor though 11 loops of 1/2 inch pex (not zoned) The setting for this pump that seems to work best is constant flow. As currently set (less than 6 gallons per minute) this pump is only drawing 15 watts!
I love the app because I can check on stats, try different modes, different flows and balance the system to provide the efficiency and responsiveness that I want. Additionally the pump will self purge if it detects air or you can request it purges for a predetermined time using the app. The pump has an auto adapt mode which wasn't helpful for me, in fact the auto adapt wanted to increase head and flow to my first floor because the pump "ON" time was too long. It was cranking it up to 38 watts. I wanted longer run times to prevent the floor from getting cold because the air temperature was quickly satisfied and to help balance the fin tubes upstairs with underfloor downstairs. So I turned the auto adapt off and selected constant flow and adjusted the flow to achieve an economic balance between responsiveness and longer run times. The big plus is with every adjustment I can instantly see how the flow, head and watts change right on the app.
Greg
Northern Illinois
3 years ago
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I have sold,installed and used hundreds of alpha pumps.
I use it as zone pumps and on indirect water heater loops. I like it not having a plug anymore because the wiring with the plug was a pain.
Hydro Leaf
Littleton Co
3 years ago
Verified Buyer
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Product Q&A
2 Questions2 Questions
Q: Does this include the two flanges shown in the installation instruction?
Asked by JW 3 years ago
Add your answer
Verified Reply- DanielleHello JW, thanks for writing in. The pump housing has flanges as part of the casting however mating flanges are sold separately.
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Q: Does this have a cord with plug as it's predecessor did?
Asked by Dennis 3 years ago
Add your answer
Verified Reply- DanielleHello Dennis, thanks for writing in. The ALPHA 15-58F Smart ECM High Efficiency Circulator Pump (Supplyhouse SKU: 92603115) does not come with a line cord.
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