How to cost-effectively heat a person or a small room

When it comes to heating a person or a small room, these are the options available to your business:

• Portable electric radiant heater. These are good for directly heating people after-hours but if you use them to heat the room, you can waste a great deal of money.
• Fan-forced portable electric convection heater. These can heat a room but not if it has high ceilings. Buying a model with a thermostat will save you money on running costs.^[1]
• Oil-filled column heaters. These can be used for slightly larger rooms with higher ceilings. Buying a model with a thermostat will save you money on running costs.