Roof Hatch Fan for Motorhomes/Caravans - HekiMiniFan - Free 3D Print Model

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K-Print3D

Hobby & DIY>Vehicles

IP Report

Print Profile(1)

All

A1 mini

P2S

P1S

H2D

X1 Carbon

H2S

H2C

X1E

H2D Pro

X2D

P1P

A2L

0.16mm layer, 3 walls, 15% infill

Designer

8.9 h

5 plates

4.9(7)

Open in Bambu Studio

Boost

101

409

135

Released

Bill of Materials

List other parts

Lüfter 140mm x 1: https://amzn.to/3PX666N
PWM Controller x 1: https://amzn.to/4t0fPrf
Einschweißmuttern x 1: https://amzn.to/3PWkdJC

Description

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This 3D print template offers a practical and efficient solution to improve air circulation in motorhomes and caravans with a Heki Mini roof window (40x40cm). The fan insert is precisely integrated into the roof window, ensuring a continuous supply of fresh air and better air exchange inside.

Ideal for warm days, the fan reduces heat buildup and provides a pleasant indoor climate – without extensive modifications. The design is compact, lightweight, and specifically tailored to the dimensions of the Heki Mini.

The fan can be powered via a direct USB connection in the vehicle or via a power bank.

The following components are required to build the model:

1x Fan set (140mm)

https://amzn.to/3PX666N

1x PWM controller

https://amzn.to/4t0fPrf

8x M3x5mm heat-set inserts

https://amzn.to/3PWkdJC

The accessories supplied with the fans are used for fastening and wiring

Features:

Perfect fit for Heki Mini roof windows
Improved air circulation in the vehicle
Easy assembly without soldering
Easy installation without drilling or gluing
Lightweight and stable design

Assembly:
The fan is simply inserted into the open roof window and can be removed at any time if needed. Optionally, a small fan can be integrated (depending on the version/design).

Construction:

Print all components and, if necessary, rework the areas where the supports were.

Slide the three parts of the base plate together

Insert nuts

Wire the fan and PWM controller using the fan cables
Pull off the PWM controller knob

Screw the fan into the outer corners using the supplied screws
Insert the PWM controller into the corresponding recess

Attach the cover plate, either with or without the power bank holder, using the 4 remaining screws.

Lightly sand the PWM controller knob and then attach it

I was inspired by a model for the Midi Heki roof hatch

https://makerworld.com/en/models/2502028-hekifan-2000-the-best-camper-van-roof-hatch-fan#profileId-2750524

Comment & Rating (29)

@trism

Boosted

Last year I had this exact project on my to-do list, but never got around to it. So imagine my surprise when someone else went ahead and made it a reality! This print is absolutely perfect for my upcoming vacation in Croatia with Peter (yes, that's the name of my trusty little Piaggio Porter 😄). A huge thank you for this fantastic work. Everything fits and functions beautifully. Can't wait to enjoy some cool, breezy summer nights in the van!

The designer has replied

@K.Print3D

Thanks for the boost and the pictures have a great holiday

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@yveslae

Boosted

How did you solve the cable management of the power supply so that the cable fits cleanly through the cutout

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@trism

Boosted

Replying to @yveslae :

I don't understand the question correctly. it has a slot and I just pushed the cable in there 🤷‍♂️. I didn't do anything special

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@benjibenji45

Boosted

Print Profile

0.16mm layer, 3 walls, 15% infill

I printed it in ABS, it's perfect thank you 👍🏻 Awesome! I'm going to make a second one but printed at 101% I think because my printer's tolerance must be a bit smaller than yours the center distance of the screws is a bit tight. but thanks for sharing 👌🏻👍🏻👍🏻

(Edited)

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@QuasiCasi

Boosted

Print Profile

0.16mm layer, 3 walls, 15% infill

Many thanks for the model. Everything fits and runs smoothly. I'm excited about our summer tour and how our mini fan will perform 💪🏼 Printed with ASA-CF

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@yveslae

Boosted

Thank you for the print file! I have installed the MPK Visionstar M roof hatches in the camper. The original file barely holds on the last millimeters, which was a bit too risky for me. Therefore, in order not to have to reprint as little as possible, I extended the contact surface by 0.9cm on one side in the slicer. Now it also fits perfectly for the MPK! Does anyone have a recommendation for a suitable USB-C cable? With straight cables, the plug is too long, so the cable cannot fit into the recess. Accordingly, I am looking for an angled cable that still protrudes far enough to bridge the good 1cm from the controller to the recess.

(Edited)

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@user_2525145893

Vielen Dank

@MiRu81

Print Profile

0.16mm layer, 3 walls, 15% infill

(Edited)

@user_482956867

Hello, can you tell me the dimensions? My Heki is only 38cm Would that fit?

The designer has replied

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@K.Print3D

Hello, I have added another picture with the dimensions

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@user_482956867

Replying to @K.Print3D :

Thank you very much, then it will fit in my motorhome

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@user_1606931047

how do you get these press nuts in

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@MiRu81

Place it over the hole, then heat with a soldering iron and press in at the same time

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@user_2643350407

Hi I need something like this for the large Heki

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@blafasl

you can find this here: https://makerworld.com/models/2502028

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@david49

hello what are the dimensions of the printed parts once the assembly is complete? to see if it is compatible with my DOMETIC Mini Heki S skylight in your opinion, if I print the parts in petg, is that sufficient?

The designer has replied

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@K.Print3D

Hi, I printed the whole thing in PETG and yes, it should fit into the Mini Heki

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License

This user content is licensed under a Standard Digital File License.

You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.

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