The answer to 'how long does furnace repair last' is that the duration of a furnace repair can vary greatly depending on the specific issue and the extent of the repair needed. On average, a properly repaired furnace can last for 5-10 years before needing additional service or replacement. However, the lifespan of a repair can range from a few months to several years, depending on the quality of the repair, the age and condition of the furnace, and how well the homeowner maintains the system.
It's important to have a qualified HVAC technician diagnose and repair any furnace issues, as they have the expertise to identify the root cause and implement a long-lasting solution. Attempting DIY repairs can sometimes lead to further damage or safety hazards, so it's generally best to call in a professional for furnace service and maintenance.