Two identical air-to-water heat pumps deliver nearly twice the expected output when operating together, but when either unit runs alone, its measured output falls well below its rating. What’s causing the performance drop, and how can the system be corrected?
SB 222 is co-sponsored by the Building Decarbonization Coalition, the Bay Area Air District, and SPUR. The bill now heads to the Governor’s desk with a deadline of September 30 to sign or veto the bill.
The system is designed to align with common rooftop unit footprints, helping maintain existing curb and duct compatibility without requiring a curb adapter in some replacement projects.
The campaign is built around an initiative led by the Building Decarbonization Coalition that targets both homeowners and the contractors who influence their decisions, with the goal of building heat pump familiarity before the emergency moment arrives.
According to the U.S. Department of Energy, geothermal heat pumps are among the most efficient HVAC technologies available, capable of significantly reducing building energy consumption.
New heat pump funding and authorization of Maryland’s Strategic Energy Investment Fund for building electrification aims to lower Marylanders’ energy bills and create jobs.
In addition to improving energy affordability and creating clean energy economy jobs in Maryland, the building electrification provisions in the Utility RELIEF Act will also support Maryland’s decarbonization goals to reduce greenhouse gas emissions by 60% in the next five years and attain net-zero emissions by 2045.