How to read and decode Ducane serial numbers: There are 10 digits to Ducane serial numbers and there are two types of serial number. First type: (Made up serial number) You will determine the month and the years from the last four digits of the serial number. 05 is the year HVACs unit was made. ![]() ![]() Ruud Model Number BreakdownSerial# 7061 Usually that serial number format is: 70 = year 21 = week M = plant 320522061 = sequential number So I would have guessed 21st week of 1970. Ableton live free crack. Greg says 32nd week of 2005. This is where it is important that one be able to add 2 and 2 and get four. Does the unit look brand new or 36 years old? What are manufacture dates for other big-ticket items in the house? When was the house built? If it looks brand new, then go with 2005. ![]() Ruud Furnace Serial Number DecoderIf it looks older (for example, it's rusted or the lineset insulation is deteriorated or the unit is not level, etc.), then go with 1970. If the water heater, cooling condenser, possibly some kitchen appliances, and the house were manufactured in 1970, then the furnace probably was, too. Ruud Serial Number NomenclaturePurchasing an older home with an existing furnace can be a worry; a furnace often needs replacing after 15 to 20 years, so knowing its age is helpful in determining if a new furnace should be in the budget. Newer units may have a manufacturer's date listed somewhere on the furnace; older furnaces require a bit more digging by looking at the serial number, which tells the manufacturer various pieces of information, including the age. Finding the serial number, however, may also require a bit of sleuth work.
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