MaxxAir Maxxfan Plus 4500K

Last updated: November 2, 2026

MaxxAir Maxxfan Plus 4500K
3.8/5#1 of 14 in open lid RV vent fans
3.8

For owners who want full automation in an open lid fan and do not need it to run in rain. The rain sensor, thermostat and remote make it close to set and forget.

  • 900 CFMAirflow
  • 10Speeds
  • NoRain cover
Check price at Amazon$338.09

Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • Closes itself when rain starts, so it can be left running while you are away
  • Ten speeds in both directions, a thermostat and a remote cover every way of running it
  • Runs with the lid closed as a ceiling fan
Cons
  • Has to close in rain unless you add a separate cover
  • Costs nearly as much as covered fans from other brands
  • Smoke lid only

The MaxxAir MaxxFan Plus family

Every MaxxAir MaxxFan Plus model we rank, smallest first. Ratings compare each against its own lid.

ModelAirflowRatingPrice
MaxxAir Maxxfan Plus 4002K900 CFM3.1/5$271.21
MaxxAir Maxxfan Plus 4000K900 CFM3.5/5$253.31
MaxxAir Maxxfan Plus 4500K (this one)900 CFM3.8/5$338.09

How it scores

The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its lid. How we rank explains each one.

Specifications

Model number00-04500K
Fan
Airflow900 CFM
Speeds10
Blade12 in
ReversibleYes
Lid and controls
Rain coverNo
Powered lidYes
Rain sensorYes
ThermostatYes
RemoteYes
LightNo
Fit and build
Roof thickness2 to 6.5 in
Warranty2 years

Alternatives in this lid

Compare

Compare the MaxxAir Maxxfan Plus 4500K with any other RV roof vent fan →

More from MaxxAir: every MaxxAir product ranked.