This report contains the results and analysis from initial testing done using the 2019 “technical review” version of CSA EXP07 load based test procedure and rating of heat pumps on. This test procedure and rating was designed to better characterize variable capacity heat pumps with capacity not larger than = 65,000 BTUh. These preliminary results suggest EXP07 provides valuable insight into heat pump performance operating under their own controls and responding to part load and defrost conditions. Appendix A contains graphs of capacity and performance from testing of 13 heat pumps. Appendix B contains a “plain language guide” of the test procedure for non-technical audiences.
