If you're looking to install a new central heating system or boiler in your home, we offer a. The typical boiler has a life expectancy of. If you have undertaken any repairs or maintenance of the system, go around and check the work to ensure there are no leaks. Pour the baking soda into the drain and let it sit for a few minutes, then pour the vinegar in with a cup of hot (not boiling) water. Your most important choice is who installs.