If you have a portable heater, getting heater repair is easy to do. What's more you can take the unit to the heating repair technician which will decrease the cost to you considerably. If you have them come to you, the costs are much more and for not real benefit.
Heating repair can be done for virtually all aspects of your heater. One area to consider getting help for is the thermostat. In many cases, it is not the heater itself that is the problem but the indicator of the temperature in the room. Replacing this is easy and affordable.