Broan-NuTone Mantra MTR3304SS 30 in
#3 in Under-cabinetFull review
A smart under-cabinet hood that sets its own fan speed from the heat of the range. Good for busy cooks who forget to turn the hood on.
Amazon $424.48$424.48
The Broan-NuTone Mantra MTR3304SS 30 in is the better range hood overall, rated 3.6 to 3.1. The Broan-NuTone Mantra MTR3304SS 30 in leads on features and quiet at low speed. The Cosmo COS-5MU30 Delta 30 in wins on price and warranty. The Cosmo COS-5MU30 Delta 30 in costs $293.49 less ($130.99 vs $424.48).
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-5MU30 Delta 30 in
#13 in Under-cabinetFull review
A slim, inexpensive under-cabinet hood for apartments and light cooking. Cosmo does not publish its airflow.
Amazon $130.99$130.99
Which should you buy?
- Choose the Broan-NuTone Mantra MTR3304SS 30 in for features (dishwasher-safe steel filters, airflow cap for make-up air codes, LED lighting, 3 or more speeds, delayed shut-off, converts to ductless, gesture, remote or app control, automatic fan speed vs LED lighting, 3 or more speeds, converts to ductless) and quiet at low speed (1.3 sones (about 44 dB) vs 50 dB).
- Choose the Cosmo COS-5MU30 Delta 30 in for price ($130.99 vs $424.48) and warranty (2-year warranty vs 1-year warranty).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every under-cabinet range hood; a clear win is highlighted. How we rank explains each one.
| Factor weight | Broan-NuTone Mantra MTR3304SS 30 in | Cosmo COS-5MU30 Delta 30 in |
|---|---|---|
| Overall rating | 3.6/5 | 3.1/5 |
| Airflow 20% | 100 490 CFM | 50 airflow not published (neutral score used) |
| Quiet at full speed 20% | 30 7.5 sones (about 69 dB) | 50 noise at full speed not published (neutral score used) |
| Quiet at low speed 15% | 56 1.3 sones (about 44 dB) | 25 50 dB |
| Features 20% | 100 dishwasher-safe steel filters, airflow cap for make-up air codes, LED lighting, 3 or more speeds, delayed shut-off, converts to ductless, gesture, remote or app control, automatic fan speed | 35 LED lighting, 3 or more speeds, converts to ductless |
| Price 15% | 37 $424.48 | 88 $130.99 |
| Warranty 10% | 0 1-year warranty | 25 2-year warranty |
Specifications
| Broan-NuTone Mantra MTR3304SS 30 in | Cosmo COS-5MU30 Delta 30 in | |
|---|---|---|
| Airflow and noise | ||
| Max airflow | 490 CFM | - |
| HVI-certified airflow (0.1 in.) | 390 CFM | - |
| Noise at max speed | 7.5 sones | - |
| Noise at low speed | 1.3 sones | 50 dB |
| Fan speeds | 3 | 3 |
| Installation | ||
| Mount | Under-cabinet | Under-cabinet |
| Width | 30 in | 30 in |
| Venting | Ducted or ductless | Ducted or ductless |
| Duct connection | 3-1/4 x 10 in or 7 in round | 5 in round |
| Power | Hardwired | Plug-in |
| Airflow cap for make-up air codes | Yes | No |
| Features | ||
| Grease filters | Steel baffle | Aluminum mesh |
| LED lighting | Yes | Yes |
| Controls | Touch, gesture | Push button |
| Delayed shut-off | Yes | No |
| Automatic fan speed | Yes | No |
| Build | ||
| Weight | 27.1 lb | 14 lb |
| Warranty | 1 year | 2 years |