How often should a heating system be replaced?

Heating a home requires the largest portion of our yearly energy bill. In addition to being the largest energy expense, heating also accounts for two thirds of our annual energy bill. Experts predict that the cost of heating our homes will increase again just as it did last winter. To prepare for this, even if your old furnace runs, from an economical standpoint it would be wise for you to replace it. If you live in a colder climate, it usually makes more sense to invest in the higher efficiency system available. In warmer climates, where the added investment required to go from an 80% to 90%- 95% efficiency may be difficult to justify, it is best to stick with what you know. When shopping for high-efficient furnaces and boilers it is important to look for dependability. A good warranty and a reputable manufacturer are key factors to consider. When purchasing gas and oil systems, it is important to specify sealed combustion. Sealing combustion means bringing outside air directly into the burners and exhausting combustion products directly to the outside, rather than through a draft hood or dampened. These units typically burn more efficiently and pose little risk of introducing dangerous combustion gasses into your home. With non-sealed combustion units, back drafting of combustion gasses