There are different schools of thought on when you should have your ducts cleaned. If you can't remember the last time you got your air ducts clean, it might be time.
Ducts can become congested with dirt, dust and pollen. Having them cleaned can help relieve allergies for some.
The cleaning generally costs $400 to $700, but prices can vary.
Watch this video to learn more about what you should expect in a duct cleaning service. Then find duct cleaning pros