Firegas FGS-USB13G70AC 30 in Insert
#1 in InsertsFull review
A low-cost insert with strong airflow and both ducted and ductless filters in the box.
Amazon $155.99$155.99
The Firegas FGS-USB13G70AC 30 in Insert rates 3.9 among inserts range hoods; the Cosmo COS-668ICS750 Lumin 30 in rates 3.4 among island ones. The Firegas FGS-USB13G70AC 30 in Insert costs $224.70 less ($155.99 vs $380.69).
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.
Cosmo COS-668ICS750 Lumin 30 in
#3 in IslandFull review
A glass island hood for a standard cooktop on an island. Open islands can benefit from more airflow.
Amazon $380.69$380.69
Scores side by side
These two sit in different type classes (inserts and island), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | Firegas FGS-USB13G70AC 30 in Insert | Cosmo COS-668ICS750 Lumin 30 in |
|---|---|---|
| Overall rating | 3.9/5 | 3.4/5 |
| Airflow 20% | 100 600 CFM | 92 380 CFM |
| Quiet at full speed 20% | 90 57 dB | 50 noise at full speed not published (neutral score used) |
| Quiet at low speed 15% | 50 noise at low speed not published (neutral score used) | 50 45 dB |
| Features 20% | 55 dishwasher-safe steel filters, LED lighting, 3 or more speeds, converts to ductless | 55 dishwasher-safe steel filters, LED lighting, 3 or more speeds, converts to ductless |
| Price 15% | 81 $155.99 | 42 $380.69 |
| Warranty 10% | 0 warranty not published, scored as none | 25 2-year warranty |
Specifications
| Firegas FGS-USB13G70AC 30 in Insert | Cosmo COS-668ICS750 Lumin 30 in | |
|---|---|---|
| Airflow and noise | ||
| Max airflow | 600 CFM | 380 CFM |
| Noise at max speed | 57 dB | - |
| Noise at low speed | - | 45 dB |
| Fan speeds | 3 | 3 |
| Installation | ||
| Mount | Insert | Island |
| Width | 30 in | 30 in |
| Venting | Ducted or ductless | Ducted or ductless |
| Duct connection | 6 in round | 6 in round |
| Power | Plug-in | Plug-in |
| Airflow cap for make-up air codes | No | No |
| Features | ||
| Grease filters | Steel baffle | Steel baffle |
| LED lighting | Yes | Yes |
| Controls | Push button | Touch |
| Delayed shut-off | - | No |
| Automatic fan speed | No | No |
| Build | ||
| Weight | - | 48.5 lb |
| Warranty | - | 2 years |