HVAC controller

Hi,

I have a heat transfer kit in my house, its completely dumb and cant be automated.

What could i replace the controller with? i dont care if the fan only ever has one speed either.

Kit
https://www.mitre10.co.nz/shop/weiss-1-to-3-room-heat-transfer-system/p/276860

Wiring Diagram
image

This is exposed and the fan is some sort of selector switch? The selector switch can be removed and replaced with a relay. Question is what is the hp or power draw of the fan? You’ll need a relay that is designed for an inductive load.

Total wattage 55 watts so quite low.

was thinking of using a iFan04-H, thoughts?

That would be what I would use because it’s built to work with inductive fans and that is an important distinction. In fact, I’m going to end up with a spare of those very soon as I’m replacing my Sonoff fan controller with an Inovelli Zigbee - so if you want one cheap you could buy mine, it’s already flashed with ESPHome.

I did this

you have to use a 3 relay one

Nice to see another kiwi on here, is there a certain model number i should look for?

search for “Keyes Relay modules”

Hey @byronmorrison kiwi here to. Did you get anywhere with this? I have been thinking of doing something like this between our main lounge area (with an in wall wood burner) and our main bedroom - with the thought that I can pump heat in winter from the lounge to the bedroom and also extract warm are from the bedroom to the lounge during the summer.