The venting chassis is designed to function optimally with jar candles that have small diameter mouths, and jar candles that have oddly shaped, non-cylindrical or smaller sized jars. The venting chassis includes an annular skirt that is dimensioned to extend below the jar shoulder that is formed between the sidewalls and jar brim. The skirt physically separates the inlet air flow from the exhaust air flow to facilitate laminar air flow within the jar candle. The skirt has three longitudinal depressions or channels, which form three inlet vents that open just below the shoulder. The skirt is shaped and configured to acts as a nozzle to constrain thereby increasing the velocity and inertia of the airflow and to vent the inlet airflow under the shoulder directly onto jar sidewalls thereby cooling the jar sidewalls.