MaxxAir Maxxfan Plus 4000K
#6 in Open lidFull review
For owners who want strong two way airflow and a thermostat without paying for a motorized lid. Pair it with a separate cover if it has to run in rain.
Amazon $253.31$253.31
The MaxxAir Maxxfan Plus 4000K is the better RV roof vent fan overall, rated 3.5 to 2.7. The MaxxAir Maxxfan Plus 4000K leads on speeds and features. The MaxxAir Maxxfan Plus 4000K costs $4.39 less ($253.31 vs $257.70).
Dometic 1450 Vent Roof Fan
#12 in Open lidFull review
For owners replacing a worn Fan-Tastic who want the same simple three speed reversible fan. Buyers paying this much should compare it with 10 speed fans that cost the same.
Amazon $257.70$257.70
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the MaxxAir Maxxfan Plus 4000K for speeds (10 speeds vs 3 speeds) and features (reversible, thermostat vs reversible).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every open lid RV roof vent fan; a clear win is highlighted. How we rank explains each one.
| Factor weight | MaxxAir Maxxfan Plus 4000K | Dometic 1450 Vent Roof Fan |
|---|---|---|
| Overall rating | 3.5/5 | 2.7/5 |
| Price 25% | 38 $253.31 | 37 $257.70 |
| Airflow 15% | 92 900 CFM on high | 50 airflow not published (neutral score used) |
| Speeds 10% | 100 10 speeds | 0 3 speeds |
| Features 25% | 45 reversible, thermostat | 25 reversible |
| Warranty 25% | 50 2-year warranty | 50 2-year warranty |
Specifications
| MaxxAir Maxxfan Plus 4000K | Dometic 1450 Vent Roof Fan | |
|---|---|---|
| Fan | ||
| Airflow | 900 CFM | - |
| Speeds | 10 | 3 |
| Draw on high | - | 3 A |
| Blade | 12 in | 12 in |
| Reversible | Yes | Yes |
| Lid and controls | ||
| Rain cover | No | No |
| Powered lid | No | No |
| Rain sensor | No | No |
| Thermostat | Yes | No |
| Remote | No | No |
| Light | No | No |
| Fit and build | ||
| Roof thickness | 2 to 6.5 in | 0.9 to 6.0 in |
| Weight | - | 10 lb |
| Warranty | 2 years | 2 years |