New study reveals heat pumps outperform gas and resistive heating, even in sub-zero temperatures found across many parts of British Columbia. ?Even in the coldest environment, heat pumps are more efficient than gas heating or electric baseboards, a new study has found. The study, published Monday in the journal Joule, examined the efficiency of air-source heat pumps in sub-zero scenarios down to minus 10 degrees Celsius — “mild cold climates” similar to the populated coastal regions of British Columbia. The research was led by Canadian Duncan Gibb, a senior advisor at the Brussels-based Regulatory Assistance Project, and carried out with...