Here at Bartlett Heating and Air Conditioning we repair every single make and model. So don’t worry if you think it can’t be fixed it can and we will fix it. Sometimes it is better to replace the system and the rule of thumb to use is age. For instance you would not put a bunch of money into a 12 or 14 year old car would you? Of course not. So if the repair is under 500 and the furnace is in good shape and Tec recommends to repair than of course replace it. If the furnace or air conditioner look all rusted out and in bad shape probably time to replace it.