By Century Motors



Part # ECM27CU

Warranty 18 Months

Alternate Part #'s AOSECM27CU

Product Description


Versatility and performance best describe A. O. Smith's new V-Green™ variable speed pump motor with integrated timer. Capable of delivering superior energy savings of over 80% versus a standard single-speed motor, V-Green motors are well suited for pump applications ranging from 3/4 - 2.7 total horsepower (THP). Spurred by consumer interest in energy-saving products and government-mandated efficiency standards, the innovative V-Green variable speed ECM offers premium efficiency boosted by such features as Power Factor Correction, which raises overall efficiency while reducing input amps! The state-of-art user interface ensures programming ease and flexibility, with on-screen navigation, ergonomic selector switch, and pre-set programs for out-of-the-box operation. A. O. Smith's V-Green is Title 20** compliant and with three user-defined variable speeds is a superb choice for reducing energy consumption, for lowering overall pool ownership costs, and for satisfying regulatory requirements.

Round Flange Hayward Super Pump, Super II Pump & Max-Flo Pumps

Note: NOT California Title 20 Compliant. 

California Title 20 Compliant Options:

Variable Speed - PART # NPTT270


Want to take your V-Green Motor to the Next Level?  Consider the VLink™ (allows you to easily monitor and manage energy consumption and optimize your pool pump settings from a mobile device).

Don't Forget Your Tune Up Kit

Hayward Super Pump Tune Up Kit
Hayward Super II Tune Up Kit
Hayward Max-Flo Tune Up Kit
Jacuzzi Magnum Tune Up Kit

Motor Features

  • Integrated Timer Interface
  • On- and Off-Board Mountable Interface
  • Timer Mode
  • Manual Mode
  • Freeze Protection
  • Auxiliary Load Capacity
  • Configurable Prime Settings
  • Noise Reduction Design
  • Adjustable Contrast
  • Power Factor Correction
  • Factory Reset
  • Battery Backup - Program Saver
  • LCD Display with Backlight
  • Ball Bearing
  • TEFC
  • Rotation: CCWPE
  • Single Phase
  • 303 Stainless Steel Shaft
  • Class F Insulation
  • 50°C Ambient
  • UV and Rain-Proof Enclosure

Note: This motor is NOT California Title 20 Compliant

Product Specifications

2.7 - .75 HP
208 - 230 V
Service Factor:
Energy Efficient:
Ultimate Energy Efficieny
RPM Range:
600-3450 RPM
Commonly Used On:
Hayward Super Pump, Hayward Super II, and Jacuzzi Magnum
10.5 - 0.5 amp
Total HP:
2.7 HP
Century (A.O. Smith)

?     Asked on 4/3/2015by Harvey

What is the warranty on the AO Smith variable speed

A  Answered on 4/3/2015 by InyoPools Product Specialist Bob D.

Hi Harvey,The motor is warranted against defects in materials and workmanship for one year from the date of installation or twenty-four months from the date of manufacture, whichever comes first.Thank you,

?     Asked on 4/12/2015by ross

Is this a "permanent magnet" motor?

A  Answered on 4/13/2015 by InyoPools Product Specialist Robert M.

Hello Ross - The ECM27CU is a permanent magnet motor.

?     Asked on 5/15/2015by Brad

We have a Hayward Super II Pump Model# K45N2N104 S/N 8B05, 2hp, 1.55KW, 230 volts, RPM 3450 56J Frame. Can I purchase a ECM27CU for this? It doesn't look like a fit for the round flange. I know it should be the right motor, but I just want to be sure before I purchase it. Can I return it if for some reason it doesn't fit?

A  Answered on 5/15/2015 by InyoPools Product Specialist Lennox H.

Brad, This 2.7 HP Variable Speed Motor Round Flange P/N ECM27CU can replace your current motor. We also recomend getting a Tune Up Kit which consist of the replacement shaft seal, housing gasket, diffuser gasket and housing lid o-ring.

?     Asked on 7/28/2015by Guest

What is the warranty on this motor?

A  Answered on 7/28/2015 by InyoPools Product Specialist Hector F.

The warranty is 18 months from install or 24 month from manufacture date (which ever comes 1st).

?     Asked on 5/8/2016by Inyo Visitor

Will this fit a Hayward Northstar pump? Do you have a vs motor that would fit a Hayward Northstar?

A  Answered on 5/10/2016 by InyoPools Product Specialist Charlie R.

No, unfortunately, there are no variable speed motors that we know of that will fit the Hayward Northstar pump. There is a dual-speed motor that will bolt up with that Northstar pump.


Est. Repair Time

Less than 1 hr

Tools Needed

Screwdriver, Nut Drivers, Socket Set

1     0

Replaced 3hp motor to Variable 2.7 Emc27cu

Written on 9/10/2020 by elcoach66

Replaced on a Hayward Super Pump which only runs 6 sheer descent waterfalls. The main pool has a super pump ii which motor still runs good. When I took apart 3 hp motor i noticed the company I used to remodel my pool had left 2 hp impeller, plate and diffuser. I changed to 2.5 impeller, diffuser and plate to take advantage to 2.7 hp. What a difference! Big improvement and quite. Glad i made the upgrade.

Were these instructions helpful? 


Est. Repair Time

Less than 1 hr

Tools Needed

Screwdriver, Pliers, Socket Set

2     0

My old Hayward Superpump 2600 was dead and needed to be changed

Written on 6/26/2020 by Guest

Removed old pump (4 bolts)
replaced old shaft seal and O rings
installed new V-Green 2.7 HP Pump (4 bolts)
Reconnected the 220 Volts wiring (3 wires)
Reconnected the bonding wire
The entire process took less than 30 minutes

I am not a professional but this was really easy to do. Almost anyone can do it.

Were these instructions helpful? 


Review Summary

 (Average 4.65  out of 5 stars)
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