There are several academic research studies published on the effects of magnetism on refrigerant and its beneficial effects.

Behavior of New Refrigerant Mixtures Under Magnetic Field , published in the International Journal of Energy Research, 2005

"the use of magnetic field appears to have a positive influence on the thermal capacities of the condenser and the evaporator ..."

"it is well established that there are major changes caused by the passage of fluid through the magnetic field."

"Several studies have been reported on the use of magnetic elements in the enhancing the performance of many applications such as oil, natural gas furnaces, diesel engines, fuel lines and also in water treatment."

"The test results under heating conditions demonstrated that increasing the magnet capacity has a positive effect on the COP."

Influence of Magnetic Field on To-phase Flow Convective Boiling of Some Refrigerant Mixtures, published in the International Journal of Energy Research, 2005

"The data clearly indicated that the boiling heat transfer coefficient was significantly influenced by the application of magnetic field.  The heat transfer coefficient was enhanced using the magnetic field..."

Effect of Magnetic Field on the Performance of New Refrigerant Mixtures --

"The test results demonstrated that as magnetic field force increases, compressor head pressure and discharge temperature slightly increase as well as less liquid refrigerant is boiling in the compressor shell.  This has a positive effect in protecting the compressor."

"Furthermore, the use of magnetic field appears to have a positive influence on the system COP..."

"...it is believed that the magnetic field could have an enhancement effect on heat transfer properties."

"The decrease of the power consumption appear to be around 8%."