Struck a deal with ClimateRight today to evaluate the CR-7000 for our application. This unit does not have heating element (heat pump only).
The main concern is when the weather is below 32°F the heat pump is ineffective. Fortunately we only hit overnight lows below 32°F in December, January, and February on average.
A small space heater could easily make up for the difference like this 200W (683 BTU) unit from Lasko.