Variable Refrigerant Flow Systems (VRF)

Install a high-efficiency variable refrigerant flow systemand improve occupant comfort.
variant flow
This advanced technology allows you to individually control the temperature of different areas of your building—driving maximum occupant comfort.

Variable Refrigerant Flow Systems (VRF) present an energy-efficient, flexible alternative to conventional HVAC systems for a variety of commercial and industrial spaces.

They consist of an outdoor unit connected to multiple indoor units via refrigerant piping to provide cooling and heating to individual zones or rooms in a building.

This heat pump serves as a great solution for businesses or buildings without existing ductwork.

Equipment Type Efficiency Requirements Amount ($/Ton)
Air Source Variable Refrigerant Flow Heat Pump Refer to for list of equipment and minimum requirements  $3,500 

  1. Purchase & Install Eligible Equipment
    Have a licensed contractor install eligible equipment.
  2. Submit Rebate Form with Required Documentation
    Apply Online
    Print & Mail Rebate Form 

Can’t find what you’re are looking for? The Sponsors of Mass Save offer customized project support to help your business save money and energy, and reduce greenhouse gas emissions. If you have any questions, please contact your Sponsor

For a full list of eligibility requirements, please reference the rebate application.

  • Must be an existing customer of Berkshire Gas, Cape Light Compact, Eversource, Liberty Utilities, National Grid, or Unitil
  • Equipment must be installed by a licensed contractor—please note that equipment installation may be subject to an on-site verification
  • Equipment must be qualified, listed with, and certified by the Air-Conditioning, Heating, and Refrigeration Institute (AHRI) and meet the minimum efficiency requirements outlined in the rebate form
  • Equipment must also be used for heating and cooling and must supplement or replace oil, propane, natural gas, or electric resistance as the primary heating system. Refer to for a list of qualified models or reach out to [email protected] before installation if units are not listed by AHRI or found on the QPL
    • Installations that are partially displacing existing heating systems must either install an integrated control or have a building management system that is capable of controlling the existing system and the heat pump, subject to the stated switchover temp
  • Contact your Program Sponsor before installation if:
    • The proposed project is more than 150 tons for Cape Light Compact, Eversource, or National Grid customers, or more than 10 tons or $25,000 total rebate value for Berkshire Gas, Liberty Utilities, or Unitil customers. Larger systems will be reviewed on a case-by-case basis.
    • The proposed project is for a new building being constructed, major renovation, or multi-family building
    • The heat pumps that are being installed will be using a hydronic or water loop internal to the building (i.e., not a ground loop) as a heat source/sink

Not Sure Where To Start?

If you’re looking for advice on how to save energy, the Sponsors of Mass Save offer energy assessments and guidance to support efficiency projects from start to finish.

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