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The furnace’s specifications should fit your needs. Installing a new furnace that’s too small won’t keep your house comfortable during extremely cold weather. To offset that, the furnaces in most homes are larger than necessary. Initial cost is only one of the drawbacks of that strategy. A furnace that is too large will cycle on […]

Gas is currently the most common heating fuel and most new central-heating systems use gas. How efficiently a furnace converts gas into heating energy is reflected in its annual fuel-utilization-efficiency (AFUE) rating, which is measured as a percentage. The higher the number, the more heat the furnace can produce from each therm of gas. Furnaces