National Home Inspector Practice Exam 2026 - Free Home Inspector Practice Questions and Study Guide

Question: 1 / 400

What is the main function of a sump pump in a home?

To enhance the efficiency of the HVAC system

To remove water from basements and prevent flooding

The primary function of a sump pump in a home is to remove water that accumulates in basements or crawlspaces, thereby preventing flooding and water damage. Sump pumps are especially critical in areas that are prone to heavy rains or high groundwater levels. By actively pumping out excess water, the sump pump helps keep the foundation dry and reduces the risk of mold growth, structural damage, and other moisture-related problems.

In this context, the other options address different systems or functions within a home: enhancing HVAC efficiency relates to heating and cooling systems, supplying water for irrigation concerns outdoor landscape needs, and filtering air pollutants pertains to air quality management. None of these address the specific issue of water accumulation in low-lying areas of a home, which is the primary role of a sump pump.

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To supply water for irrigation

To filter air pollutants

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