Library

Research study describing experiments run in an unoccupied 1600 square foot house to evaluate the delivered performance as well as the relative performance of a SEER 21 variable capacity heat pump versus a SEER 13 heat pump.

This report evaluates the performance of variable-capacity comfort systems, with a focus on inverter-driven, variable-capacity systems, as well as proposed system enhancements.

Guide by the Northeast Energy Efficiency Partnerships on how to size heat pumps in a cold climate.

Report describing the advantages and best practices for installing heat pump water heaters (HPWH), highlighting their improved energy efficiency, reliability, and critical considerations such as condensate management, proper sizing, and optimal installation location to enhance performance and...

Guidance on performance of current diagnostics as well as a draft test method for use in future air flow evaluations.

This report investigates whether mini-split heat pumps can live up to their potential for one market segment: multifamily retrofits.

Technical study exploring the impact of different installation faults on heat pump performance in a single-family house.

Website providing consumers with resources to find, select and install heat pump water heaters.

A research paper discussing the use of foundation heat exchangers for ground source heat pump systems in European climates.

Conference paper summarizing the relative performance of currently available Heat Pump Water Heaters (HPWH) models, the energy implications of different installation locations (garage, basement, or conditioned space) and ducting configurations (exhaust ducting, full ducting, or no ducting), as well...