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1​

​Go to furnace and look around top of furnace main duct, see if has damper handle?

Picture
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2

Is there damper?

yes
no

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  • Main
  • DIY
    • Video List
    • Diagnostic Tool >
      • Start
    • Q & A >
      • Basic
      • Cooling
      • Condensation
      • Fan
      • Heating
      • Maintenance
      • Noise
      • Smell
      • Thermostat
    • Safety
  • Company
    • About Us
    • Contact
    • Services
  • Latest