Professional plumbers often express caution regarding tankless water heaters due to their complex installation requirements, frequent maintenance demands, and expensive repair parts. Retrofitting a tankless unit into an older home frequently requires upgrading undersized gas supply lines, installing larger venting flues, and adding electrical circuits. Furthermore, homeowners often neglect mandatory annual descaling flushes, leading to premature heat exchanger failure and costly warranty disputes. Verification: Consult a licensed plumber to assess your home's gas supply and venting compatibility.
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