If your heater is not working right, you can call a heater repairman to perform heater repair. Heater repair can be quite expensive, but it must be performed if you want heat during the winter months. You should call a professional rather than trying to fix it yourself because it can be a dangerous job trying to repair the heater.
Heater repair expense depends on the type of heat you have. If you have electric baseboard, the fix might be simple. If it is gas or oil heat, you may have to have the unit fixed which can cost hundreds of dollars. If you need to get that type of heater repair, call an expert.
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