Uploaded February 2015 | Updated September 2026, 3 weeks ago

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Evohome links:
UK: amzn.to/2mB8Ndo
DE: amzn.to/2A1ryjN
FR: amzn.to/2uWpOCu
ES: amzn.to/2zW9oji
IT: amzn.to/2zWDenU
CA: amzn.to/2A0gSlD
US: amzn.to/2uJl1Fi

Honeywell Evohome installer training course:
youlearn.honeywelluk.com/course/evohome

Note that the BDR91's should be mounted 30cm apart for best performance. In this installation all the elements are within a couple of meters and it works fine, but that will probbaly not be the case in other situations.

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The Honeywell BDR91 will not install properly on an open backbox / surface pattress because of its rounded corners.

This video shows you two methods of fitting it neatly. It also apples to the Honeywell thermostats that have a base plate like the CM907