![]() ![]() In a number of cases, the HVAC setup may be run for 20 years. For a furnace, this can be as long as 15 to 18 years. ![]() Often this distinction is not of any importance, however sometimes it is critical to define the exact units in which the tonnage is expressed.Ī well-maintained AC can run for 10 -12 years or more. If this sticker is still in tact, it will tell you the Seasonal Energy Efficiency Ratio in large numbers. Head over to your cooling system and look for a yellow and black “energyguide” sticker, which can usually be located on the side of the condenser. Step 5: Match your square footage to an HVAC size chart Home Sq Footage What size AC unit do I need for a 2000 square foot house? So, the year of manufacture for this Goodman Air Handler is December of 2014. ![]() Next, the second set of two digits is 12, meaning the month of manufacture is December (12th month). The first two digits of this serial number are 14, meaning the year of manufacture is 2014. How do you decode Goodman model numbers? The first two digits is the year of manufacture. ![]()
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