Gas furnaces are the units that we never forget for our homes during the cold season of winter. Most residents who live in areas where winter is prevalent for months often choose to have this unit running or choose to have boilers available in their homes. There are a lot of kinds of furnaces sold in the market nowadays. Although most are operated with the use of electricity, there are furnaces that are run through gas and fuels. There would be times that it is hard to find the right gas furnace to install at home. Here are some of the essential tops that you can go to in order for you to find the best unit for your residence.