Vaillant VR920 vs VR921

nme · 24 Jan 2024

Hi,

Whats the difference between the VR920 and VR921? I’m looking to add internet control to my 700. Also which is the best Vaillant app or can you use any of them with these controls?

Vaillant’s website isn’t too clear on this.

Thanks
Nathan

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Vaillant VR920 vs VR921

nme

DIYnot Local

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