What's the cheapest way to heat and cool a house? - The Green Mohawk
10.4 Heat pumps - SWEP
Experimental investigation of a reversible heat pump/organic Rankine cycle unit designed to be coupled with a passive house to get a Net Zero Energy Building - ScienceDirect
Solved Problem 5.1 - Reversible Home Air Conditioner and Hot Water Heater (2/21/2010)