TerraBloom Duct Fans Ranked

Last updated: November 9, 2026

2 TerraBloom duct fans ranked. Each one is scored and ranked against every brand in its duct size, so "#3 mid-size" means third of all mid-size duct fans here, not third among TerraBloom's own.

TerraBloom makes 2 current duct fans: 1 4 in and 1 8 in and up. Its best-rated model in each size: the TerraBloom ECMF-100 4 in EC Fan (#7 of 7 4 in, rated 2.7) and the TerraBloom 8 in Inline Fan TB-MFIF-8 (#4 of 9 8 in and up, rated 2.9).

Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.

TerraBloom duct fans 2

  1. TerraBloom 8 in Inline Fan TB-MFIF-8
    #4 8 in and up2.9Full review

    A low-cost 8 in fan for a large tent or attic. Its power draw and noise are not published.

    Amazon $89.99
    $89.99
    8 in735 CFM--
  2. TerraBloom ECMF-100 4 in EC Fan
    #7 4 in2.7Full review

    A very quiet 4 in fan for a bedroom closet or a small tent where noise matters more than airflow.

    Amazon $89.99
    $89.99
    4 in141 CFM6.7 CFM/W18 dBA

Every inline duct fan ranked