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What are the most common problems with wall/window air conditioners?.Why is my air conditioner not cooling enough?.Why does it take so long to cool a house when an air conditioner has been off for a while?.Why has the thermostat screen gone blank?.What is wrong with an air conditioner when the air flow out of the vents is low?.How did homes stay cool in Florida before air conditioning?.Does an old air conditioner use more electricity as it ages?.Where is the air filter for my central air conditioner and furnace? I can’t find it?.How can I find out the size of my air conditioner?.
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To learn more about heating and air conditioning systems, see these other blog posts: To find the age of other home components, go to How can I find out the age of a roof? and How do I determine the age of an electrical panel? and How do I determine the age of my water heater? For life expectancies, visit What is the average life expectancy of the components of a house? And to determine the size of your unit, see How can I tell the size in tons of a Lennox air conditioner or heat pump from the model number?Īnd to figure out what all the other numbers listed on the condenser data plate mean, go to our blog post How do I understand the air conditioner or heat pump condenser label (data plate)? To find out the age of another brand of air conditioner or heat pump, go to How do I determine the age of my air conditioner?, which has a listing of all major manufacturers and links to instructions for decoding their serial numbers. The second two digits of the serial number are the year of manufacture for Lennox units.