The answer to 'how to maintain heat exchanger' is to regularly inspect, clean, and service the heat exchanger in your HVAC system. The heat exchanger is a critical component that transfers heat from the combustion process to the air circulated through your home. Proper maintenance helps ensure safe and efficient operation.
Start by visually inspecting the heat exchanger for any cracks, holes, or signs of corrosion. Use a mirror and flashlight to thoroughly examine all surfaces. Next, use a soft brush or vacuum attachment to gently clean any dust or debris buildup. Avoid using harsh chemicals or abrasives, as they can damage the heat exchanger. Finally, have a professional HVAC technician perform a comprehensive inspection and cleaning at least once a year, or as recommended by the manufacturer.