This Industry Guidance Package is the first in a series of resources produced by ProspectSV and Lawrence Berkeley National Lab, with support from technology partners and technical advisors across Engineering, Architecture, and Real Estate Development.
The resources draw on results and key takeaways from a real-world demonstration of our ANSWR CO₂ Heat Pump — though many components apply to CO₂ heat pumps more broadly. We're grateful to ProspectSV and all contributing partners for their expertise, including DMG North, Alter Engineers, IDeAs Consulting, Sharp Development Co., effecterra, Avida Energy, Point Energy Innovations, and Guttmann & Blaevoet.
ANSWR CO₂ Heat Pumps for Large Commercial Buildings
For informational and industry guidance purposes only. This material is not a substitute for project-specific engineering, design, compliance, or operational advice — always consult qualified professionals.
Resource Package
Real-world performance data, technical specs, design resources, and communication tools to support your evaluation and adoption of CO₂ heat pump technology.
This resource package covers:
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Project Overview
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Technology Information
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Demonstrated & Modeled Performance
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Design & Operations
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Funding & Financing
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Communication Tools
Technology Information
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Simultaneous heating, cooling, and DHW
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Highly efficient (high COP, no defrost, no derates)
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Natural, ultra-low GWP (1) refrigerant (CO₂/R744)
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High delivery temperatures (up to 180°F)
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Cold climate performance (down to -40°F)
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Plug-and-play integration
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Works for retrofits
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Lower total cost of ownership compared to gas boiler/chiller and conventional heat pump systems
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Future proof against regulations
Contact us for more information on the ANSWR system.
Product Flyer
Key features, benefits, and technical specifications summary.
Model C Technical Data Sheet
Detailed specifications including system configuration, capacities, operating temperature ranges, and key performance metrics.
Demonstrated & Modeled Performance
Performance Curves
Heat pump performance curves for use in energy simulation tools, drawing on manufacturer data supplemented by FLEXLAB demonstration results and Flow's Minnesota testing facility data.
Use Cases & Modeled Performance
Summary of use cases and modelling results highlighting ANSWR performance across large commercial buildings in 4 California climate zones.
Last updated: May 5, 2026 — produced by ProspectSV
Funding & Financing
NPV Analysis
Compares the ANSWR system against traditional gas and electric HVAC and DHW systems, accounting for upfront costs, ongoing operational expenses, and incentives over the system lifecycle — across 4 California climate zones.
Last updated: May 4, 2026 — produced by ProspectSV
Funding & Financing Guide
How to locate funding and financing opportunities for commercial heat pump projects, including key sources, sample search terms, and applicable financing mechanisms.
Produced by ProspectSV
Funding & Financing Opportunities
Example funding and financing programs available in California for commercial heat pump projects. Note: incentive programs change frequently — this list reflects programs available at time of publication and will be updated periodically.
Last updated: February 2025 — produced by ProspectSV