Our old gas boiler

This gas boiler is over 40 years old. But this equipment is still working. It's simple and reliable. No electronics. Gas burner and a large barrel of water. Warm water flows in the batteries by gravity. For this purpose, the pipes are made at an angle. We have a new gas boiler. But due to some circumstances, we are not installing this boiler yet. Keep everyone warm in winter.

And this is a video of a gas water heater that we use to heat water.
Video: "How do you heat water in your home?"
https://rumble.com/v3o3lg8-how-do-you-heat-water-in-your-home.html