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Goodman 高效暖氣爐， 現在的價格比我當時買貴多了，估計到了冬天會更貴，還有一個細節我在視頻裡忘了說，是爐子的發熱單位，購買前可以參考舊的爐子的發熱單位，計算的時候不要忘記熱效率，網上也有一些公式來計算你需要買多大發熱量的爐子，我買的是80，000BTU的，2500平方英呎的住房，非常合適，一定要選合適的，太大太小都不好； Goodman 96% high efficient furnace. Price now substaintially goes up, I believe during the winter time will cost even more. One thing I forget mention about BTU, how many BTUs you need? I think you can check your old furnace to verify the BTU number and don't forget the efficiency rate. You can also easily to find a formula online to calculate. I bought the furnace with 80,000BTU, and it perfectly fit my 2500sf house. https://www.amazon.ca/gp/product/B013CRZKN4/ref=as_li_qf_asin_il_tl?ie=UTF8&tag=uvalue0d-20&creative=330641&linkCode=as2&creativeASIN=B013CRZKN4&linkId=4d7c8e9022096916f9eb843606059f52