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Understanding furnace efficiency

​Upgrading your furnace can improve your home's energy efficiency and save you money on heating costs.
 

Many homes may still have mid-efficiency furnaces (78 - 82 per cent).   These mid-efficiency furnaces are no longer available for purchase in the province if the manufacturer date is listed after January 1, 2010.  High-efficiency (condensing) furnaces (90 - 98 per cent) are now mandated for new construction and for furnace replacement in existing homes, giving you up to 98 cents worth of usable heat for every dollar you spend.  Standard-efficiency furnaces that are 20 years old or more may be as little as 60 per cent efficient, while post 1990 mid-efficient models can achieve an annual efficiency of 78 to 82 per cent.

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