Low‑Ambient Derating in Heat Pumps: Capacity Loss and Balance‑Point Calculation for Auxiliary Heat Requirements
The derating curve is not merely a performance characteristic, it is a design tool that shapes equipment selection, auxiliary heat sizing and overall system architecture.

Heat pump technology has become a defining component of modern HVAC engineering in regions of the country where buildings are transitioning toward electrification and higher efficiency. Although all heat pumps…

Ask Me Anything: Your Questions About Building Department Challenges and More, Answered
Member-submitted questions about service on the International Code Council (ICC) Board of Directors, public administration, project management, building codes and more are answered by Jessica Fust, CBO, MPA, Building Official at City of Billings, MT, and ICC Board Member.

Jessica Fust, CBO, MPA, Building Official at City of Billings, MT, and ICC Board Member, joined us on our “Ask Me Anything” series in the online member community to answer member-submitted questions. …