You can purchase a pure sine wave inverter if you think you need it for other reasons than the refer. Samsung on there web site "frequently asked questions" state that there refrigerators convert the incoming 120 volts AC to a DC voltage and the entire unit runs on DC, therefor springing for an expensive inverter is not required. I installed a Magnum MMS1012 before finding out about this, $800 wasted. The refer ran fine on my 2000 watt modified sine wave but had 2 control panels fail on my 24.5 cu ft model so I installed the inverter. After the install of the inverter the Samsung refer tech. that installed the second panel informed me that there was a series of panels that were bad. My newest revision panel has now worked ok for the last 7 months of continuous use. I leave thhe refer on 24-7. Just giving some info here.
KDK