a large capacity furnace takes little time to heat up a small house, so it runs short cycles, not good to the lifespan of the machine. You might want to check if the blower connection is on HIGH; if it is a two speed motor you can run on LOW, which makes it less noisy, and probably save some heating bill too.
各位前辈，
我有一个独立屋，1450尺，七十年代的房，11年前大修的时候装修师傅给换了furance，也重新做了insulation。Furnace是请装修师傅代买的。我就记得他当时说他拿了一个好deal。说这款在打折，是用来heat 6,000尺的大屋的。
我在里面住了几年，就觉得每次furance开启，噪音特别大，utility bill比较多。后来房子租了，今年冬天湾区比较冷，再加上租客都在家了，导致二月份电和煤气的账单高到近600。
我想知道，如果我重新换furance，有什么注意事项吗？换一个正常size的furance就行吗？网上信息很多，看的眼都花了。上来问问大拿，听听大家的意见。
多谢！
a large capacity furnace takes little time to heat up a small house, so it runs short cycles, not good to the lifespan of the machine. You might want to check if the blower connection is on HIGH; if it is a two speed motor you can run on LOW, which makes it less noisy, and probably save some heating bill too.
这种问题比较典型，大功率机器声音响是肯定的，能耗大也是预期的。