There are a lot of types of water heaters, but most of them have the similar lifespan. The first mistake people make is that they wait for something bad to happen to replace it. When that happens it can be late for some other things that can be ruined by the leaks and other problems broken water heater can make. It is always better to make sure it is everything in order then to wait for it to brake to fix it.
Every water heater has a plate that says when it was manufactured and in how much time it should be replaced. Usually, they put a lower lifespan on the plate just to make sure. Water heater replacement cost will differ depending on the type of water heater you use, but it is always better to have a professional to do it then get yourself in trouble if you make a mistake.
Getting the old out
The price is usually around $600 to $800, but for example, we will take a gas water heater. To get started you need to shut off the water supply, the gas supply and drain the water. You can remove the old gas piping because you will get a new one with the new water tank. Also, remove the overflow from the temperature and pressure relief valve. When you finish removing these pipes you should break the galvanized flue gas connection at the top of the water heater.
You can reconnect to the hot and the cold copper water line, so it is a lot easier to clean them in place and then cut them. Once they are cut you are ready to take the water heater out. If you see a one man doing the job just call someone for assistance to be more secure. The person doing the job can drop it because it is heavy and potentially break a pipe and then you will have a mess all over.
Get more information about it here: https://www.wikihow.com/Replace-a-Water-Heater
Getting the new one
When you get a new water heater, try to find a similar to the old one but just a new version. If everything was regular with the old one it means that it suits your home perfectly. The first thing to do when you get it is to reconnect the gas. The most common thing is that the pips won’t fit like the old one did, so you will need some cutting tools to make everything fit together. Be sure to have someone experienced doing this because you are working with gas and high-pressure.
Make sure that everything is okay with the overflow. That comes from the temperature and pressure-relief valve. So, it is a very important safety device if the tank ever got too hot or too much pressure. You wouldn’t want that pressure to damage something else or hot water to burst everywhere, so making the valve secure is the number one for safety.
When all the pipes are connected and valves are secured you can put the water back on. While the tank is filling turn the gas back on and do the “leak test”. You can put some oil on the connecting pipes and if you see a bubble forming it means the potential leakage is there.
Differences between older and new
In many gas water heaters, manufacturers have increased the amount of insolation from 3/4 to inch and a half and that is great, but it is not going to make this huge difference because inside of a gas heater like older ones, there is a burner at the bottom, a tank filled with water and coming up through the middle is a flue pipe that has a flue products. Most of these big water heaters are placed in basements. So, a hot tank of water and ice cold air from the basement coming up through it, so much heating is lost. If you go over 55 gallons, you can no longer use that style of a water heater.
Nowadays you have to vent it through some nonmetallic piping to outside, not into the chimney and bring the second line in to bring air in for combustion.