---
title: "Replacing the NavVis VLX 3/4 Fan Filters"
slug: "replacing-the-navvis-vlx-3-fan-filters"
description: "Replace the fan filters on the NavVis VLX 3 annually or if overheating occurs below 30°C. Locate filters on the head and bottom for easy replacement."
tags: ["How to video"]
updated: 2026-09-21T09:36:09Z
published: 2026-09-21T09:36:09Z
canonical: "knowledge.navvis.com/replacing-the-navvis-vlx-3-fan-filters"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://knowledge.navvis.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Replacing the NavVis VLX 3/4 Fan Filters

Follow these instructions to replace the fan filter on your NavVis VLX 3. We recommend you replace the fan filters once a year.

> [!WARNING]
> ![A yellow triangle with a black exclamation mark Description automatically generated](https://cdn.document360.io/bf174766-fa1a-4fe1-a4d7-b1db1e7cb996/Images/Documentation/safety-image-ucy1tziv.png?sv=2026-02-06&spr=https&st=2026-11-04T04%3A12%3A41Z&se=2026-11-04T05%3A12%3A41Z&sr=c&sp=r&sig=bvLxQyhS%2F2judy4dDB6IG%2BUV3hpUaMuUb44H0w1CyNg%3D) **Caution:** If a warning is displayed for overheating at temperatures below 30°C, check to see if the fan filter is clogged. If it is clogged, replace it with a new filter that comes in the transportation box. We recommend you replace the fan filter annually. A clogged filter reduces the performance of the and it might overheat at temperatures below 30°C.

To replace the fan filters, locate them on the head and bottom as shown here.

![A detailed view of a device with highlighted components for better understanding.](https://cdn.document360.io/bf174766-fa1a-4fe1-a4d7-b1db1e7cb996/Images/Documentation/Filter_location1.png?sv=2026-02-06&spr=https&st=2026-11-04T04%3A12%3A41Z&se=2026-11-04T05%3A12%3A41Z&sr=c&sp=r&sig=bvLxQyhS%2F2judy4dDB6IG%2BUV3hpUaMuUb44H0w1CyNg%3D)

[Embedded content](https://player.vimeo.com/video/832601463?h=f86b000e55&badge=0&autopause=0&player_id=0&app_id=58479)