Efficiency efforts have been successful over time, especially in the period after the oil price shock, but steadily through the decades.
Building Energy
Housing Quantity
Homes have been getting larger for decades. Data from compiiled MassGIS gives a clear view of the pace of growth.
Heat pump decisions
This post attempts to summarize the environmental and consumer considerations for people seeking to electrify heating in a home.
Evolution of Heat Pump Technology
We can expect material improvement of heat pump efficiency over the next few years. It may make sense for some homeowners, especially those who heat with gas and who do not have an immediate need to replace their heating system, to wait for the next generation of heat pumps.
Noisy Numbers
Noisy and conflicting data cast doubt on my previous estimate of heat performance in my home.
Frameworks for heat pump analysis
As we consider heat pumps we need to be clear about which framework we are thinking from. This post identifies three alternative frameworks, identifies the quantitative questions relevant to each framework, and discusses the state of our understanding of those questions in each framework. Possible frameworks include: In every framework, the analysis of heat pumps …