Across the Northeast, nearly five million homes rely on aging central air conditioners paired with fossil‑fuel furnaces — a combination that locks households into higher energy use, higher emissions, and higher long‑term costs. Each time a central AC fails, homeowners face a pivotal decision point. Yet most simply replace their old unit with another one‑way AC, missing the chance to install a two‑way system: a modern heat pump that delivers efficient cooling and reliable heating for year‑round comfort.
This report shows why that moment matters. Every AC replacement is an opportunity to improve home comfort, cut energy consumption, reduce peak demand on the grid, and lower greenhouse gas emissions — all while helping states meet ambitious climate and electrification goals. The shift from AC to heat pump retrofits represents one of the region’s most powerful, scalable levers for progress.
Drawing on detailed modeling across climates, fuels, and system configurations, the report demonstrates that heat pumps reduce energy use and lifetime emissions in every scenario. The economic case is equally compelling: households replacing a failed AC with a heat pump can achieve cost savings or cost parity in most situations, with the greatest benefits for homes currently heated with propane or fuel oil. In many cases, full electrification can return annual savings of $2,000–$3,000, even before incentives.
The analysis also highlights the importance of smart switchover controls, rate design, and demand flexibility to maximize customer savings and grid benefits. When paired with time‑of‑use rates and demand response programs, heat pumps can reduce summer peak loads and support more resilient system planning.
But economic potential alone won’t drive adoption. Persistent barriers — from contractor training to upfront cost hurdles to customer awareness — continue to slow progress. The report outlines a suite of policy and program strategies that can accelerate the transition, including targeted incentives, market transformation efforts, and improved installation practices.
With more than 330,000 central cooling replacements occurring each year in the Northeast, the region stands at a critical inflection point. Choosing a heat pump instead of a like‑for‑like AC replacement can deliver immediate household benefits and long‑term regional gains. This report provides the roadmap for regulators, utilities, program administrators, and market actors to seize that opportunity — and ensure that every AC replacement moves the Northeast toward a cleaner, more affordable, and more resilient energy future.
