After about 10 years, a gas fireplace is just about done for.
As sad as this is, in the first 2-3 years of its life, a significant decrease in efficiency happens.
If you are not on it with cleaning and maintaining your gas fireplace, it will not live that long. Getting a HVAC contractor to my home has proven to be just about impossible. I wanted to be good and do regular heating tune ups every fall season. Any local HVAC business I called either put me on a waiting list, did not call me back or refused to make the drive to my home. My gas fireplace just went years with no professional help. My husband and I did everything we could. I wiped the outside and vacuumed up the inside once a year. My husband frequently would mess with the electric start. That has been the heater repair that won’t go away. The fireplace is a little weird about turning on and off. The wireless remote no longer will operate our heating system. You have to manually turn it on and off. Sometimes the fireplace just won’t turn on. My husband and I keep messing and messing with it then. After the heater comes on, sometimes it won’t turn off. There are days that the house is around 80 degrees and the heater won’t turn off. I would rather have this than the reverse. I know I need a new heating system, but I just can’t make myself put in the time, effort and work.