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Furnaces The largest portion of most hydro bills is attributed to controlling temperature. An energy efficient heating and cooling system can significantly contribute to savings on your hydro bill and may improve the comfort in your home. When shopping for a new heating or cooling system, be sure to take into consideration the equipment costs, costs of fuel, fuel delivery, warranties and any predictable maintenance costs over the life of the equipment. Upgrading your furnace may be the most effective way to improve your home's energy efficiency and save money on heating costs. Today's natural gas furnaces are technically advanced and are up to 97 per cent efficient! That means that for every dollar you spend on energy, 97 cents is used for heat. By comparison, older furnaces are typically about 60 per cent efficient. Mid Efficiency Single/Two Stage The minimum allowable furnace efficiency today is 78 per cent Annual Fuel Utilization Efficiency or higher, making mid-efficiency (non-condensing) furnaces today's standard. They usually include spark or hot-surface ignition and a venter fan or automatic vent damper and achieve an annual efficiency of 78-82 per cent. versed and used for heating during the winter months High Efficiency Single/Two Stage If you're building a new home or replacing your existing furnace, consider a high-efficiency model. These units have two heat exchangers to recover even more heat from flue gases. They are between 90-97 per cent efficient, and can be vented through an exterior wall, so you don't need a chimney. In general, the higher your energy bill, the greater your potential savings with a high-efficiency furnace
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