Static Pressure (Ductwork Air Pressure)

Proactive Home Maintenance

Proactive home maintenance is the practice of monitoring, inspecting, and servicing home systems before they fail, rather than waiting for breakdowns to occur. According to U.S. Department of Energy data, proactive maintenance reduces repair costs by up to 40% compared to reactive approaches.

Delta-T (Temperature Differential)

Delta-T is the difference in temperature between two measurement points in an HVAC system — typically the supply air temperature minus the return air temperature. A healthy AC system typically shows a Delta-T of 15-20°F. Readings outside this range indicate problems such as low refrigerant, dirty coils, or airflow restrictions.

MERV Rating (Minimum Efficiency Reporting Value)

MERV ratings measure how effectively an air filter captures particles from the air passing through it, on a scale from 1 to 20. Residential HVAC systems typically use MERV 8-13 filters. Higher MERV ratings capture smaller particles but also restrict airflow more, so the filter must be matched to the system's specifications.