It's a simple unit consisting of a burner and lighter, and temperature control system.
In recent times I've brushed the burner with a wire brush, but nothing else, and I've never had to do any maintenance on any water heater before. Gas consumption seems about the same as it has before, it seems anyhow.
What's unique is there's a cat box next to the water heater with dusty cat litter. But there's been one there for a couple of years too.
What is the next step, clean the burner, or just clean the water heater and be done with it?
