The heat recovery pick for a mid size home in a cold climate, backed by long core and motor warranties. It draws more power at full airflow than the Broan and ACiQ units.
Amazon $1,175
An HRV for a condo or apartment where space is the main constraint. Anyone with room for a full size unit gets far better recovery for the money from the Broan or HERO.
- 106 cfmAirflow
- 61%Sensible recovery
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
- Fits in a space as small as 24 in, such as a closet or soffit
- Lifetime core and 7 year motor warranties
- Plugs into a standard outlet
- 61% heat recovery is the lowest here
- High price for about 106 cfm
- Fantech and HVI power figures disagree, so running cost is unclear
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.
Specifications
| Model number | FLEX 100H |
|---|---|
| Performance | |
| Core | HRV (heat only) |
| Install | Ducted, whole house |
| Airflow | 106 cfm |
| Sensible recovery | 61% |
| Build | |
| Frost protection | Yes |
| HVI certified | Yes |
| Warranty | 5 years |
Alternatives in this type
An affordable, self balancing HRV for a mid size home in a cold climate. Pay more for the B230H75RT or Fantech HERO if heat recovery matters most.
Amazon $1,021A cold climate HRV with good heat recovery and a lifetime core warranty. Its price per cfm is high bought online, so compare it with the Broan and Fantech first.
Amazon $1,636.66Compare
Compare the Fantech FLEX 100H with any other ERV or HRV →
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