@misc{521fa90f3b784f6ca45f28cdbac071d0,
title = "Minimizing Auxiliary Heat Use for Cold Climate Operation of Air-Source Heat Pumps",
abstract = "This paper investigates the auxiliary heat use for air-source heat pumps (ASHPs) operating in cold climate conditions. Twelve variable-capacity, central ducted ASHPs installed in single-family homes in cold climate regions (eleven in northwest United States and one in Denver suburb) were monitored for an entire winter season to collect data at cold temperatures. The methodology employed airside and power measurements that were taken every five-seconds, to calculate heat pump's capacity, coefficient of performance (COP), and auxiliary heat energy consumption. This paper provides valuable insights into the practical implications of auxiliary heat utilization in centrally ducted ASHPs and suggests opportunities to mitigate the usage of auxiliary heat, improving the overall system efficiency during cold climate operation.",
keywords = "air-source heat pumps, auxiliary heat, centrally ducted heat pumps, cold climate, electric resistance, heat pump, low outdoor temperatures, residential, system efficiency",
author = "Sugirdhalakshmi Ramaraj and Jon Winkler",
year = "2025",
doi = "10.2172/2589176",
language = "American English",
series = "Presented at the 2025 ASHRAE Winter Conference, 8-12 February 2025, Orlando, Florida",
type = "Other",
}