
HEPA filter vacuum attached at plenum of heating unit. |

Duct prior to cleaning. |

Duct after cleaning. |

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Multiple filters inside of the HEPA filter vacuum. |

Filter found in the top of the HEPA vacuum. |

Fogger to disinfect ductwork. |

Soft brush used to clean some types of ductwork. |

Gas powered air compressor used to supply forced air while sweeping ductwork. |