Retrofitting and installing a roof-mounted air conditioner in a campervan | Off-road camper DIY v...

Опубликовано: 15 Май 2026
на канале: Frank Sewert, Offroad & Outdoor
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Can you easily retrofit a roof-mounted air conditioner to your motorhome, caravan, or off-road camper? Ideally, you should install it yourself? Absolutely! And in this video, we'll take you along on our DIY installation of the new air conditioner in our friend Simon's Mercedes MB 814 D! Unvarnished and practical. 🙂

We'll show you step by step how we installed the air conditioner, the challenges we faced when installing it on the off-road truck, and what you should pay attention to if you want to install a roof-mounted air conditioner in your motorhome or camper yourself. We'd been wanting to tackle this air conditioning project in the Mercedes MB 814 D for a while, and we're sharing our experience with you here!

This video is perfect for you if you:
• want to retrofit a roof-mounted air conditioner in your motorhome or camper.

• You drive a 4x4 or off-road camper
• You're looking for real DIY practice instead of advertising promises
• You want to know what to consider when installing a roof-mounted air conditioner

Here are the different timestamps:

0:00 in this video
0:30 Introduction
0:36 Planning the Dometic RTX air conditioner installation
3:46 Preparing the roof-mounted air conditioner
6:46 Roof assembly
7:45 ​​Gluing/sealing the gasket
9:21 My summer car
9:40 Do you need pickup truck beds?

10:08 Back to the air conditioner and the Mercedes MB 814 D
10:15 Mounting the roof-mounted air conditioner
11:11 Painting the air conditioner cover
11:45 Testing the roof-mounted air conditioner
12:33 Conclusion on the installation and the air conditioner

Enjoy watching – and feel free to write in the comments what modifications you'd like to see next!