Derek Cole explains when to repair or replace HVAC systems: under 10 years, repair if maintained; around 12 years, weigh repair against replacement costs; at 15-18 years, replacement usually makes financial sense. Plan ahead to avoid emergency failures during peak seasons.
Here's where I land on this. If your system is under 10 years old, it's generally worth repairing, okay? Assuming it's been maintained and the repair isn't a major component like a compressor. If it's 12 years or older, that repair or replace conversation is worth a conversation to take seriously. Not because anyone's trying to sell you a new system, but because the math often tells a different story than the repair bill alone. And if the system's 15 or 18 years old, typically you're pretty good money chasing a bad situation. You're also one bad summer away from an emergency situation with no good options. The best time to make a decision is before before the emergency sets in, when you can take time to think clearly, compare options, get financing in place, all that, and schedule it on your terms versus the terms of the weather.
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