Heater Fan (120mm) Booster Fan

This radiator fan is designed for standard 120mm fans. Downloadable mounting plates facilitate construction of a radiator booster/fan for Type 22 and Type 33 radiators. Employing a heat pump enabled a significant reduction in my heating curve. Attachment is achieved using ø8x3mm neodymium magnets; a minimum of six, though up to ten, are recommended per fan. Testing encompassed two distinct fans. The Arctic P12 models operated pleasingly quietly at 5-6V. However, supplementary decoupling via rubber grommets is advised to mitigate noise transmission to the radiator. Fan control is managed via Home Assistant and a Shelly Plug S—automatically engaging when the flow surpasses a predefined threshold and disengaging when it falls below.

Approximately two to three fans are required for 80cm radiators; three are necessary for 100cm radiators.

English:

This radiator fan is designed for standard 120mm fans. You can download the mounting plates for building a radiator booster/fan for type 22 and type 33 radiators. I heat with a heat pump and was able to reduce my heating curve considerably. The fans are attached with neodymium magnets ø8x3mm. At least 6 neodymium magnets with ø8x3mm are required per fan - you can also fit 10 per fan. I tested two different fans. The Arctic P12 fans were pleasantly quiet at a voltage of 5-6V. However, you should also decouple the fans with rubber pins as otherwise more noise will be transmitted to the radiator. I control the fans via Homeassistant using a Shelly Plug S (automatically on when the flow exceeds a certain threshold and off when the flow falls below a threshold).
For 80cm radiators you need approx. 2-3 fans. For 100cm radiators you need 3 fans.
 

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Here is the material I used:

-Magnets (6-10 pieces/fan): https://amzn.to/4fCukuO

-Rubber pins (4 pieces/fan for sound decoupling): https://amzn.to/4emADS3

-Affordable PLA: https://amzn.to/3YDknqd

-Speed controller for 3-pin fans (for variable speed control): https://amzn.to/3YDknqd

-Arctic P12 (quiet at 5-6V or approximately 50% with speed controller):  https://amzn.to/3YDknqd

-Xilence XPF120 (louder than Arctic, but more economical): https://amzn.to/4gK2kWM

-Arctic F12 (untested): https://amzn.to/3ACtLlV

-Arctic P12 PWM—pleasingly quiet at moderate speed (NOTE: requires PWM control, e.g., with ESP32+Relay): https://amzn.to/3AvxXnx

-Shelly Plug S (for Home Assistant control or scheduled operation): https://amzn.to/4hHW5nr

-12V power supply (speed regulation required, e.g., using the speed controller above): https://amzn.to/3O1fna0

-3-12V adjustable power supply: https://amzn.to/3YBd4PI

-Wago connectors (my preferred choice): https://amzn.to/3O1fLW0

Additional wiring for fan connection is necessary