Resources

This Industry Guidance Package is the first of a series of resources developed by ProspectSV and its partners. The information below was produced independently by ProspectSV and our research partner Lawrence Berkeley National Lab, with the help of technology partners and technical advisors from the Engineering, Architecture, and Real Estate Development industries. The resources were created based on the results and key takeaways from our demonstration of Flow Environmental Systems’ ANSWR CO₂ Heat Pump, but many components are applicable to CO₂ heat pumps in general. We’re grateful to all who provided their feedback and expertise, including DMG North, Alter Engineers, IDeAs Consulting, Sharp Development Co., effecterra, Avida Energy, Point Energy Innovations, and Guttmann & Blaevoet.

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CO₂ Heat Pumps for Large Commercial Buildings

Resources based on results from a demonstration of Flow Environmental Systems’ ANSWR CO₂ Heat Pump in Berkeley, CA.

Industry Guidance Package

Performance data, technical specifications, design resources, and communication tools to help you evaluate and incorporate CO₂ heat pump technology into your next project.

This Industry Guidance Package includes:

  • Project Overview

  • Technology Information

  • Demonstrated & Modeled Performance

  • Design & Operations

  • Funding & Financing

  • Communication Tools

Note: This material is provided for general informational and industry guidance purposes only and is not intended to serve as project-specific engineering, design, construction, compliance, or operational plans, nor should it be relied upon as a substitute for consultation with qualified professionals.

Project Overview

  • In-depth summary of the CO₂ heat pump demonstration with results, key takeaways, and lessons learned.

    Last Updated: June 3, 2026

    Download here.

 

Technology Information

Provided by Flow Environmental Systems

For more details on Flow’s ANSWR CO₂Heat Pump, contact Flow here.

  • General product flyer for the ANSWR system that includes key features, benefits, and a technical specifications summary.

    Download here.

  • Detailed technical specifications for the ANSWR Model C that includes system configuration, capacities, operating temperature ranges, and key performance metrics.

    Download here.

 

Demonstrated & Modeled Performance

  • Heat pump performance curves used for modeling in energy simulation tools. Utilizes manufacturers data, supplemented with FLEXLAB demonstration and Flow’s Minnesota testing facility data.

    Download Performance Curve Fitting Spreadsheet here.

    Download Calculation Procedures here.

  • Summary of Use Cases and modeling results that highlight the ANSWR heat pump's performance in large commercial buildings across 4 California climate zones.

    Last Updated: May 5, 2026

    Download here.

 

Design & Operations Documents

Provided by Flow Environmental Systems

  • Link to a downloadable Revit file for Flow's heat pump, gas cooler, and packaged air-source heat pump.

    View here.

  • Simplified single line drawing for installation of Flow's ANSWR system.

    Note: This drawing is an example and should be adapted based on specific project needs and building conditions.

    Download here.

 

Funding & Financing

  • A net present value (NPV) analysis comparing the ANSWR system to traditional gas and electric HVAC and DHW systems, accounting for upfront capital costs, recurring operational costs, and incentives over the system's lifecyle. The analysis is provided for the 4 CA climate zones defined in the Use Cases.

    Last Updated: May 4, 2026

    View here.

  • Instructions and guidance on how to locate funding and financing opportunities to support commercial heat pump projects. Includes helpful sources of information, sample search terms, and types of applicable financing mechanisms.

    Download here.

  • List of example funding and financing programs available in California to support commercial heat pump projects.

    Note: Incentive programs change frequently. This guide reflects programs available at time of publication and will be updated periodically.

    Last updated: February 2025

    View here.

 

Communication Tools

  • Common industry challenges associated with implementing heat pumps in large commercial buildings, and key benefits of the Flow ANSWR system that address these barriers.

    Download here.

  • Practical language for discussing the benefits of CO₂ heat pump systems with buildings industry stakeholders - including owners, designers, contractors/installers, and operators/managers.

    Download here.

Training Resources

Interested in DMG’s Training Program?

Email them at training@dmgn.com

Ready to take the next step?

Whether you're just curious about the technology or ready to implement in a future project, we'd love to connect! Our project team is available to address questions or discuss your approach.

Email us at resources@prospectsv.org