How much area can it heat?

It is a 1,500-watt fan heater, so it is best for a single small-to-medium room rather than a whole floor. It works fastest as spot heat near where you sit.

Does it have a thermostat and timer?

Yes. It has a digital thermostat and a programmable timer, so it can cycle on and off to hold a set temperature.

Is it quiet enough for a bedroom?

On the low setting it is fairly quiet, but the high setting is clearly audible. Light sleepers may prefer an oil-filled radiator for overnight use.

Can it run without heat, as a fan?

Yes. A fan-only mode moves air without heating, which is useful in warmer months.

Does it have a child lock or tip-over safety?

There is no child lock. It does include a tip-over switch that cuts power if the unit is knocked over.

How does it compare with an oil-filled radiator?

It heats much faster but its warmth stops soon after you switch it off. An oil-filled radiator is silent and holds heat longer but takes far longer to warm up.