Gas hot water service only heating to warm

Troy requested 2 quotes from Plumbers in Hoppers Crossing

Hot water service is not heating properly. It is on its hottest setting and it is only heating to warm temperature.

Greg George Plumbing & Gasfitting

GAS HWS NOT IGNITING
GAS HWS NOT IGNITING

TO REPAIR A GAS WALL FURNESS
GAS WALL FURNESS NEEDS TO BE FIXED. IT IS A VULCON FURNESS.

Gas wall heater removed.
I have an old wall heater that needs removed. It works well but is outdated...