A door latch system for a heating system is provided. The door latch system may be installed with a fireplace, wood stove, pellet stove, or other suitable system. The door latch system comprises a handle, a handle head and a catch. The handle head may be configured to engage the catch. Moreover, the catch may be configured with a self adjusting tension system, such that when the handle head engages the catch, the catch is configured to exert a tension force on the handle head. This tension force also causes the handle head to compress the seal of a fireplace door where the door latch system is installed.