Considerations for switching from radiators to PTAC units

[Nina Liu]

Hi all, I have a 30 unit motel that runs on oil heat. We have ~350 sq ft studios with one radiator in the main room and one in bathroom. In an effort to use less oil, I am switching to PTAC units that include heat and cooling. We've also had so many incidences of pipe leaks in the past from the attic so I will be happy to avoid those in the future. 

The PTAC units provide good heat to the small rooms, but is residual heat from the main PTACs enough for the bathrooms? Or should I install electric baseboards in bathrooms? 

My current plan was to keep the radiators in the event of outages because our 14kw generator is able to power the furnaces that provides heat during outages. But if I install electric baseboards, would I be able to rely on residual radiator heat from the room during an outage or should I upgrade our generator?

Any suggestions for our transition to electric heat?