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&lt;/script&gt;</html><description>Understanding HVAC Systems and Their Lifespan Heating, ventilation, and air conditioning (HVAC) systems are crucial for maintaining indoor comfort, yet many homeowners overlook their lifespan. Typically, an HVAC system lasts between 15 to 25 years, depending on usage and maintenance. Recognizing the replacement signs, such as frequent repairs or noticeable drops in energy efficiency, can [&hellip;]</description></oembed>
