When sized and commissioned right, a heat pump spends most of its time running at a fraction of its total capacity. Variable-speed heat pumps operate over a wide range of speeds to adjust their capacity but are 10-50% MORE efficient when running at less than full output. This session will give insights on how heat pumps perform at partial loads, and how NEEA’s efforts to standardize onboard commissioning can help Raters comply with HVAC commissioning checklists.
