As performance and efficiencies have marched upward over the last several years, VRF has made steady advances in the last frontier of cold climates. This part of the industry has chipped away at both market share and preconceived notions about planning and executing commercial or residential projects in those areas, and it has learned a few things for HVAC contractors to keep in mind as well. Cold-climate consumers are used to the concept of auxiliary heat. VRF has made progress, but what about trends in the auxiliary part of the design?"In line with the electrification movement sweeping the country, we are seeing more electric strip heaters being used as an auxiliary heat source when needed," said Wade McCorkel, CEM, regional sales manager for Samsung.
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