Furnace: Global warming is caused by the harmful greenhouse gases that emits from your home furnace. The furnace contributes to the largest portion of your energy bill.

炉子：炉子也是引起全球变暖的温室气体的制造者，同时它消耗了家里最多的能源。

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The right energy efficient furnace can bring your home years of lower energy bills and saving of the Earth’s resources.

选择了正确的高效能的炉子，可以使你的家庭节保持数年的低能源消耗，同时也节省了地球资源。

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From servicing the furnace to replacing drafty Windows and doors, home improvement projects can add up to big savings come winter.

从维修火炉到更换通风门窗，住宅改进工程能为您的来冬节约大笔费用。

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Questions like: what furnace should I buy for my home?

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You also should have enough to cover life's inevitable, unanticipated expenses, like a leaky roof or dead furnace not just in your primary home but also in all of your investment properties (which likely suffered abuse and neglect on their way to becoming bargains).

WSJ: Breaking the Home-Buying Habit -- WSJ House Talk

However, if the furnace and other systems that are normally covered are still under warranty from the manufacturer, then a home warranty is redundant.

WSJ: Is a Home Warranty Necessary in a Hot Market?--WSJ House Talk