The answer to 'how often to replace HVAC repair' is that most HVAC systems should be replaced every 10-15 years, depending on the type of system and how well it has been maintained. Proper maintenance and regular tune-ups can extend the lifespan of an HVAC system, but eventually all systems will need to be replaced due to normal wear and tear on components.
Factors like the climate, usage, and quality of the original installation can also impact the replacement timeline. It's generally recommended to have an HVAC technician inspect the system annually and provide maintenance to maximize its efficiency and longevity. Waiting too long to replace an aging system can lead to more frequent and costly repairs, as well as decreased energy efficiency and comfort in the home.