Add 'What a real tune up includes'

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+<br>Start with a quick assessment: unit age, model efficiency, recent failures, and energy bills. If repairs exceed a sensible percentage of replacement and the system is older, consider upgrade options with warranty-backed installs. A quality tune up should include coil cleaning, [electrical](https://www.deer-digest.com/?s=electrical) tests, refrigerant verification, airflow checks, and thermostat calibration. Improve indoor [Long Heating Air & Plumbing](https://rentry.co/69395-beginner-guide-to-iaq-upgrades) with better filtration, duct sealing, and smart thermostat scheduling. Document findings and compare quotes apples to apples. get a free estimate
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