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<a accesskey="3" href="page.php?w=Heating_system&amp;p=2">3.Next</a>
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<p>A <b>heating system</b> is a mechanism designed to maintain a desired <a href="page.php?w=temperature">temperature</a> in a space by adding <a href="page.php?w=thermal_energy">thermal energy</a>. It is a fundamental component of <a href="page.php?w=heating%2C_ventilation%2C_and_air_conditioning">heating, ventilation, and air conditioning</a> (HVAC) systems, providing warmth to residential, commercial, and industrial buildings. Heating systems are of two main types: central and distributed. <a href="page.php?w=Central_heating">Central heating</a> systems</p><p>
<a accesskey="3" href="page.php?w=Heating_system&amp;p=2">3.Next</a>
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