Systems and methods for electronically locking HVAC doors

An electronic locking device of a door of a heating, ventilation, and air conditioning (HVAC) system, wherein the electronic locking device comprises:

• a locking engagement device disposed on an outer portion of the door;
• a latching system disposed on an inner portion of the door, wherein the latching system comprises a latch, wherein the latching system is configured to operate the latch to prevent the door from opening when the latch is engaged;
• and
• a conductor electrically coupling the locking engagement device to the latching system, wherein the latching system is configured to disengage the latch in response to the locking engagement device being in a first position and the latching system is configured to engage the latch in response to the locking engagement device being in a second position.

A locking engagement device configured to be disposed on an outer portion of a door of a heating, ventilation, and air conditioning (HVAC) system, wherein the locking engagement device comprises:

• a receptacle configured to enable insertion of a key, wherein the locking engagement device is configured to rotate in response to the key being inserted in the receptacle and rotated;
• and
• a conductor configured to electrically couple the locking engagement device to a latching system disposed on an inner portion of the door, wherein:
• the locking engagement device is configured to send a first indication of being in a first position to the latching system via the conductor in response to the locking engagement device being rotated into the first position;
• and
• the locking engagement device is configured to send a second indication of being in a second position to the latching system via the conductor in response to the locking engagement device being rotated into the second position.