ES3R-A VFD Chassis front view
Essential Series VFD

Residential and Light Commercial VFD

The Essential Series VFD is our solution for single-phase residential and light commercial constant pressure installations requiring 1/3 to 2 horsepower. The ES offers simple setup, rugged hardware, a NEMA Type 3R enclosure with powder coated finish and insect guards. Enjoy industrial VFD quality and robustness in a drive that is easy to configure and well priced.

The ES was specifically designed to help ensure the VFD is properly configured the first time. Return trips are all too common with variable frequency drive installations on water systems. Installing an Essential Series drive can eliminate return trips and the possible customer service issues those return trips create.

A high-quality 4-20 mA analog pressure transducer is standard with our ES Series drives to help make constant pressure setup quick and easy.


System setup with Perfect Pressure requires only a few minutes and is capable of controlling complex pump systems with ease.

Configuration and VFD status is displayed on a large, bright, back-lit screen that is visible even in direct sunlight. Complex configurations are made straightforward with intuitive configuration and easy to understand options.

After setup with the included transducer the Essential Series VFD will control pressure consistently regardless of demand. Your pump system will run more smoothly with fewer instances of short cycling.


The NEMA 3R enclosure and 50 C (122 F) temperature rating mean this VFD can be installed almost anywhere.

SDE Enterprise VFD in a below-ground installation

The Phase Technologies ES Series incorporate the same design principles as our larger industrial-grade products.

Constant Pressure
Yes (Enter)
No  (Home)

Easy Installation

Service and Support

Standard 2-Year Warranty

Single-Phase VFD Specifications

Model Input Voltage Horsepower Current Rating Motor Compatibility
ES3R-A 120 V or 240 V 1/3 HP to 2 HP 16 A 2-Wire and 3-Wire Motors

ES Series

Contact our sales department for terms and pricing on ES Series variable frequency drives.

Contact sales