How To Look At A House
McGarry and Madsen's home inspection blog for buyers of
site-built, mobile/manufactured and modular homes
How do I determine the age of a Westinghouse furnace?
Thursday, July 15, 2021
The fourth and fifth digits of a Westinghouse furnace serial number are the year of manufacture, and they should follow three digits of letters. So the serial number shown below indicates manufacture in 2009.
To learn more about heating and air conditioning systems, see these other blog posts:
• What is the minimum slope of a flue connector for a gas furnace or water heater?
• Why is the base of the gas flue at the roof red?
• My air conditioner won't turn on. What's wrong?
• How does a hydronic heating system work?
• Is a furnace allowed in a bedroom, bathroom, or an adjoining closet?
• How can I find out the size of my air conditioner?
• How can I tell whether the condenser (outdoor unit) is an air conditioner or heat pump?
• What does the "AFUE" rating of a furnace mean?
• Can a Type B vent connector be run horizontally?
• Where is the air filter for my central air conditioner and furnace? I can’t find it?
• Which one is better for a home heating system: electric or natural gas?
• Does an old air conditioner use more electricity as it ages?
• How did homes stay cool in Florida before air conditioning?
• What is wrong with an air conditioner when the air flow out of the vents is low?
• Why has the thermostat screen gone blank?
• Why does it take so long to cool a house when an air conditioner has been off for a while?
• Why is my air conditioner not cooling enough?
• What are the most common problems with wall/window air conditioners?
• Will closing doors reduce my heating and cooling costs?
Visit our HEATING AND AIR CONDITIONING page for other related blog posts on this subject, or go to the INDEX for a complete listing of all our articles.
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