Abstract: Refrigerant sensor mounting mechanisms are provided herein. The mounting mechanisms allow the refrigerant sensor to be positioned at a bottom portion of a heat exchanger of an air conditioning system such that the refrigerant sensor is proximate to the drain pan of the air conditioning systems. The mounting mechanism may also allow for the refrigerant sensor to be mounted to the top of the drain pan, in some embodiments. By positioning the refrigerant sensor at this location, the refrigerant sensors are more likely to not only detect a refrigerant leak, but also detect the refrigerant leak quickly, as the leaked refrigerant is likely to settle at this location at the bottom of the air conditioning system.

Abstract: A system is disclosed for use in a ventilation cabinet about a furnace. The system includes a heat exchanger coil having a bottom directed toward the furnace being configured to received air from the furnace, a drip pan disposed at the bottom of the heat exchanger coil so as to catch condensed water from the heat exchanger coil, and a heat shield including a unitary sheet metal body configured to be inserted between the drip pan and the furnace.

Abstract: An air conditioning cooling coil and its associated drain pan are positionable in either a vertical or horizontal air flow orientation. With the drain pan in its vertical air flow orientation, generally horizontally disposed drainage trough portions of the drain pan around its periphery are sloped relative to one another in a manner such that all coil condensation received in the troughs flows by gravity therethrough into a downwardly projecting condensate well and outwardly through an outlet opening therein. When the drain pan is in its horizontal air flow orientation, the troughs are disposed generally in a vertical plane, and coil condensation falls on a specially designed horizontal drip shield, which may be connected to the pan without tools, separate fasteners or sealing material, and drains along the drip shield into one of the pan troughs for discharge from the main drain opening of the pan.