My central air conditioner is 10 years old and I've been seeing an advertisement on tv saying we should replace our central air conditioners if they're 10 years old or older and we'd save money on our electricity cost?
My air conditioner works fine and my monthly electric bill for the air conditioner runs around $180.00 per month.
Would I save money by having the 10 year old central air conditioner replaced with a new one?