Heat Pumps and Building Energy

The outline below organizes building electrification and efficiency material on this site. For a chronological view of recent material, see our building energy thread.

• Summary heat pump resources
  • Consumer heat pump resources (links only)
  • Consumer guide: start here if you are considering heat pumps
  • Consumer alert: be sure to get the new generation heat pumps in 2025.
  • Heat pump policy outlook
• Utility costs
  • Gas rate relief
  • Electric rates
• Heat pump analytic issues (see a video discussion of the overview or flip through slides)
  • Installation costs
  • Installation volume
    • Commission on clean heat
    • Heat pump potential studies
    • Home energy survey
      • Home energy survey detailed results
      • Home energy survey free-form comments
  • Efficiency
    • Portfolio performance vs. average performance
    • Coming improvements in heat pumps (refrigerant changes)
    • Heat distribution — a missing number in the heat pump equation
  • How green will the power be (emissions from generation)?
    • Massachusetts climate plan emissions
  • Customer behavior
    • Partial conversions in the context of our climate plans
  • Refrigerant leaks
    • Toxicology of heat pump refrigerants
    • Coming improvements in heat pumps (refrigerant changes)
  • Natural gas leaks
  • Social cost of carbon
  • Energy prices
  • Second order variables
    • Upgrading Belmont’s Grid
  • Tracking climate progress
• Heat pump experiences
  • Our heat pump experience
  • The typical refrigerant leak experience
  • Our heat pump efficiency measurement
    • Our heat pump inefficiency and leaks (2022-3)
    • Reanalysis of heat pump efficiency results (2022-3).
    • Improved heat pump efficiency results (2023-4)
    • Heat pump efficiency measurement approach 2023-4
    • Our heat pump configuration
  • Constituent Surveys
    • Heat pump installation survey results
    • Heat pump installation timing survey results
    • Heat pump monitoring and leak experience survey results
• Planning to support heat pump conversions
  • Mass save plan changes
  • Funding for heat pumps
  • Federal heat pump support
  • Learning from Maine
• Emerging technologies and approaches
  • Networked geothermal heat pumps
• Energy conservation in buildings
  • Building sector overview
  • Historical unit counts and square footages in Massachusetts (resource)
  • How much is the efficiency of the existing housing stock improving?
  • The energy crisis of the 70s — how did we cut emissions?
  • Energy Savings before Mass Save, 1972-2009
    • Shift to electric appliances
    • Appliance efficiency improvements
    • Behavior changes
    • Building envelope improvements
  • Funding building decarbonization
    • Energy conservation expectations — in depth analysis of potential
    • Deep energy retrofits — historical thread
• Climate documents
• Climate agencies
• Videos
  • Video recording of zoom call on heat pumps
  • Video recording of zoom call on climate with Senator Barret

Search for data on building energy