The answer to 'how often to replace AC repair' is that most central air conditioning units should be replaced every 10-15 years. This timeframe can vary depending on factors like the unit's efficiency, usage, and maintenance. Proper maintenance and regular tune-ups can help extend the lifespan of your AC system, but eventually all units will need to be replaced as they become less efficient and more prone to breakdowns.
It's important to monitor your AC unit's performance and be aware of signs that it may be time for a replacement, such as increased energy bills, uneven cooling, or more frequent repairs. Consulting with a professional HVAC technician can help you determine the best time to replace your system and ensure you get a new unit that meets your home's cooling needs efficiently.