DesignLine RoomMate HVAC Units: Analysis of Reported Performance Discrepancies Efficiency ratings determine which HVAC systems can legally be sold and installed in the United States. This article investigates concerns surrounding DesignLine Roommate heat pump models MHP10 and MHP11, examining disputed efficiency data, DOE compliance issues, and the legal risks of misleading ratings. Discover why accurate numbers matter and how false claims can lead to serious consequences. Read more: https://hayer.app/blogs/29298/DesignLine-RoomMate-HVAC-Units-Analysis-of-Reported-Performance-Discrepancies