Hot Water Circulator:

A new hot water boiler will be far more efficient than an old one. The best boilers are 80 percent efficient. This means that for every dollar you spend on fuel, 80 cents will go to heat. Installing a new hot water boiler is a big job that you won’t complete in an hour or two. You should probably only undertake it if you feel comfortable working with plumbing, pipes and gas.
Your hot water boiler needs to be on a stable, level surface, with gas, water and electrical lines all close by. Unpack the new hot water boiler from its carton and use a level as a guide to making sure it sits straight in all directions on the installation surface, which will usually be a basement floor. Make sure the gas and water to the house are turned off. To dress the boiler, you need to add the pipes that send out heat.